馬場 菊太郎（ばば きくたろう、1905年7月11日 - 2001年11月30日）は、日本の後鰓類学者。福岡県糸島郡波多江村（現・糸島市波多江）出身。

馬場菊太郎は日本の後鰓類研究者の第一人者である。馬場が活躍する時代には貝類については既に多くの専門家がいたが、後鰓類は未開の分野であった。馬場は多くの海外の研究者と最新の知識を交流することで、日本での数少ない後鰓類専門家となった。その研究は日本の後鰓類の多様性を世界中に知らしめることになり、世界中の後鰓類研究家から敬愛された。

昭和天皇が収集した後鰓類について図譜の解説をするように下命され、『相模湾産後鰓類図譜』（1949年）、『相模湾産後鰓類図譜補遺』（1955年）を発表する。

その後晩年まで研究を絶やさず、他界寸前まで研究は続けられた。生涯に記載した後鰓類の新種は約112種。最後の研究は濱谷巌と共著となった「日本産ショウワアメフラシの記録」である。本文献は濱谷によって馬場の死後の2003年、日本貝類学会より公表された。

略歴 

 大正12年（1923年） 福岡県立中学修猷館卒業
 昭和7年（1932年） 東京文理科大学（後の東京教育大学）生物学科卒業
 昭和7年（1932年） - 昭和16年（1941年） 九州帝国大学附属天草臨海実験所 事務嘱託
 昭和15年（1940年） 京都帝国大学から理学博士の学位を受ける
 昭和16年（1941年） - 昭和18年（1943年） 文部省資源科学研究所所員
 昭和18年（1943年） 大阪府立科学教育研究所技師。
 昭和23年（1948年） - 昭和24年（1949年） 大阪第一師範学校（現・大阪教育大学）教授
 昭和24年（1949年） - 昭和46年（1971年） 大阪学芸大学（現・大阪教育大学）生物学教授
 昭和26年（1951年） - 昭和34年（1959年） 大阪学芸大学附属天王寺中学校校長を兼任
 昭和46年（1971年） 大阪教育大学名誉教授。
 昭和51年（1976年） 勲三等旭日中綬章を受章
 昭和62年（1987年） 動物分類学会名誉会員
 昭和63年（1988年） 日本貝類学会名誉会員
 平成3年（1991年） アメリカ西部軟体動物学会名誉会員
 平成13年（2001年） 肺炎のため死去

記載した新種 
以下の新種を記載した。
 Aglaja orientalis Baba, 1949
 Aldisa cooperi Robilliard & Baba, 1972
 Antonietta janthina Baba & Hamatani, 1977
 Aplysia kurodai Baba, 1937
 Aplysia sagamiana Baba, 1949
 Aplysiopsis minor (Baba, 1959) 
 Aplysiopsis nigra (Baba, 1949) 
 Aplysiopsis orientalis Baba, 1949
 Armina magna Baba, 1955
 Bornella japonica Baba, 1949
 Cadlina japonica Baba, 1937
 Cadlina sagamiensis Baba, 1937
 Carminodoris bifurcata Baba, 1993
 Ceratosoma bicolor Baba, 1949
 Cerberilla asamusiensis Baba, 1940
 Chelidonura fulvipunctata Baba, 1938
 Celidonura inornata Baba, 1949
 Chelidonura tsurugensis Baba & Abe, 1959
 Cratena affinis (Baba, 1949) 
 Crimora lutea Baba, 1949
 Cuthona annulata (Baba, 1949) 
 Cuthona diversicolor (Baba, 1975) 
 Cuthona ornata Baba, 1937
 Cuthona purpureoanulata (Baba, 1961)
 Dendrodoris elongata Baba, 1936
 Dermatobranchus albopunctulatus Baba, 1976
 Dermatobranchus nigropunctatus Baba, 1949
 Dermatobranchus otome Baba, 1992
 Dermatobranchus primus Baba, 1976
 Dermatobranchus semistriatus Baba, 1949
 Dermatobranchus striatellus Baba, 1949
 Elysia abei Baba, 1955
 Elysia amakusana Baba, 1955
 Elysia kushimotoensis Baba,1938
 Elysia obtusa Baba,1938
 Elysia trisinuata Baba,1949
 Ercolania boodleae (Baba, 1938)
 Ercolania subviridis (Baba, 1959) 
 Eubranchopsis virginalis Baba, 1949
 Eubranchus horii Baba, 1960
 Eubranchus inabai Baba, 1964
 Eubranchus misakiensis Baba, 1960
 Euphurus ornatus Baba, 1937
 Facelina quadrilineata (Baba, 1930)
 Favorinus japonicus Baba, 1949
 Favorinus mirabilis Baba, 1955
 Favorinus perfoliatus Baba, 1949
 Favorinus tsuruganus Baba & Abe, 19
 Glossodoris misakinosibogae Baba, 1988
 Goniodoris felis Baba, 1949
 Gymnodoris amakusana (Baba, 1996)
 Gymnodoris nigricolor Baba, 1960
 Gymnodoris okinawae Baba, 1936
 Gymnodoris subflava Baba, 1949
 Halgerda rubicunda Baba, 1949
 Hermaea zosterae (Baba, 1959) 
 Hermaeina nigra Baba, 1949
 Herviella albida Baba, 1966
 Herviella yatsui (Baba, 1930) 
 Hopkinsia hiroi (Baba, 1938) 
 Hopkinsia plana (Baba, 1960) 
 Hypselodoris kaname Baba, 1994
 Hypselodoris maritima (Baba, 1949)
 Hypselodoris placida (Baba, 1949)
 Hypselodoris sagamiensis (Baba, 1949)
 Hypselodoris shimodaensis Baba, 1994
 Janolus mirabilis Baba & Abe, 1970
 Janolus toyamensis Baba & Abe, 1970
 Jorunna parva (Baba, 1938) 
 Kaloplocamus acutus Baba, 1949
 Madrella gloriosa Baba, 1949
 Madrella granlaris Baba, 1949
 Metaruncina setoensis (Baba, 1954) 
 Mexichromis multituberculata (Baba, 1953)
 Noumea nivalis Baba, 1937
 Noumea purpurea Baba, 1949
 Noumea subnivalis Baba, 1987
 Okenia barnardi Baba, 1937
 Okenia distincta Baba, 1940
 Okenia echinata Baba, 1949
 Okenia japonica Baba, 1949
 Okenia plana Baba, 1960
 Petalifera ramosa Baba, 1959
 Phidiana anulifera (Baba, 1949)
 Phyllidia zebrina Baba, 1976
 Phyllodesmium iriomotense Baba, 1991
 Phyllodesmium kabiranum Baba, 1991
 Pleurobranchus hirasei Baba, 1971
 Polycera fujitai Baba, 1937
 Polycera japonica Baba, 1949
 Protaeolidiella atra Baba, 1955
 Roboastra luteolineata (Baba, 1936)
 Rostanga risbeci Baba, 1991
 Runcina elioti Baba, 1937
 Sagaminopteron ornatum Tokioka & Baba,1964
 Sakuraeolis enosimensis (Baba, 1930) 
 Sakuraeolis sp. Genus: Baba in Baba & Hamatani, 1965
 Siphopteron flavum (Tokioka & Baba, 1964)
 Siphopteron fuscum (Baba & Tokioka, 1965)
 Stiliger smaragdinus Baba, 1949
 Stiliger subviridis Baba, 1949
 Tambja amakusana Baba, 1987
 Tambja kushimotoensis Baba, 1987
 Tambja sagamiana (Baba, 1955) 
 Thecacera picta Baba, 1972
 Thordisa parva Baba, 1938
 Thordisa sanguinea Baba, 1955
 Thorunna florens (Baba, 1949) 
 Thuridilla livida (Baba, 1955) 
 Thurdilla splendens (Baba, 1949)
 Trapania japonica (Baba, 1935) [Drepania]
 Tritonia insulae (Baba, 1955)
 Tritoniopsilla alba Baba, 1949

献名された後鰓類 
各国の研究者から献名された後鰓類は10種を超え、馬場に因む属名もある。
新属
 Babiella Risso-Dominguez, 1964
 Babaina Odhner, 1968
 Babakina Roller, 1973

新種
 Linguella babai Tchang-Si, 1934
 Marionopsis babai Odhner, 1936
 Elysia babai Pruvot-Fol, 1945
 Okenia babai Hamatani, 1961
 Tamanovalva babai Burn, 1965
 Flabellina babai Schmekel, 1970
 Cyerce kikutarobabai Hamatani, 1976
 Placida babai Marcus, 1982
 Chelidonura babai Gosliner, 1988
 Phyllidia babai Brunckhorst 1993
 Hypselodoris babai Gosliner & Behrens 2000

主な著書 

 蛙 発生 岡田弥一郎・馬場菊太郎、1932年
 相模湾産後鰓類図譜 生物学御研究所、1949年
 相模湾産後鰓類図譜補遺 生物学御研究所、1955年
 日本の海辺生物生態写真集、北隆館、1964年

後鰓類部分を担当した本
 無脊椎動物・軟体動物．生物学大系 1　中山書店、1952年
 先生と生徒のための生物　日本出版、1950年
 トカラの島々(サンゴ礁の生物)　アサヒ写真ブック2、1954年
 海浜生物の生態　(幻灯用)　京都理科映画研究会
 原色動物図鑑　軟体動物・後鰓類, 溝腹類　北隆館、1954年
 新日本動物圖鑑(中)　軟体動物・尾腔類, 溝腹類　北隆館、1965年
 動物系統分類学〈5 上〉軟体動物(1)　中山書店、1999年

論文 

 Abe, T.; *Baba, K. 1952. Notes on the opisthobranch fauna of Toyama bay, western coast of middle Japan. Collecting & Breeding 14(9):260-266. [In Japanese, N]
 Baba, K. 1930. Studies on Japanese nudibranchs (1). Polyceridae. Venus 2(1):4-9. [In Japanese].[N]
 Baba, K. 1930a. Studies on Japanese nudibranchs (2). A. Polyceridae. B. Okadaia, n.g. (preliminary report). Venus 2(2):43-50, pl. 2. [In Japanese].[N]
 Baba, K. 1930b. Studies on Japanese nudibranchs (3). A. Phyllidiidae. B. Aeolididae. Venus 2(3):117-125, pl. 4.[N]
 Baba, K. 1931. A noteworthy gill-less holohepatic nudibranch Okadaia elegans Baba, with reference to its internal anatomy. Annotationes Zoologicae Japonenses 13:63-89, pls. 5-7.[N]
 Baba, K. 1931a. Morphological study on circulatory and excretory systems in Okadaia elegans Baba. Zoological Magazine, Japan [Dobutsugaku Zasshi] 43(507):1-6. [In Japanese].[N]
 Baba, K. 1931b. Morphological significance of gill-less nudibranchs. Tokyo Bunrika Daigaku Gakugei [Tokyo Arts & Sciences University] 4:250-258. [In Japanese].[N]
 Baba, K. 1932. Pseudobornella orientalis, nov. gen. et sp. from Japan. Annotationes Zoologicae Japonenses 13(4):369-376.[N]
 Baba, K. 1933. A pelagic nudibranch Cephalopyge orientalis, nov. sp. from Japan. Annotationes Zoologicae Japonenses 14(1):157- 163, pl. 7.[N]
 Baba, K. 1933a. Preliminary note on the Nudibranchia collected in the vicinity of the Amakusa Marine Biological Laboratory. Annotationes Zoologicae Japonenses 14(1):165-179.[N] 
 Baba, K. 1933b. Supplementary note on the Nudibranchia collected in the vicinity of the Amakusa Marine Biological Laboratory. Annotationes Zoologicae Japonenses 14(2):273-283.[N]
 Baba, K. 1935. A general sketch of the molluscs inhabiting the coral reefs of Okinawa Islands. Venus 5(2,3):99-102, pls. 7-9. [In Japanese].[N] 
 Baba, K. 1935a. Report on the biological survey of Mutsu Bay (27) Nudibranchia of Mutsu Bay. Science Reports Tohoku Imperial University, series 4, Biology 10(2):331-360, pls. 5-7.[N]
 Baba, K. 1935b. Notes on a nudibranch, Madrella sanguinea (Angas), with reference to its papillary glands. Venus 5(4):181-187, pl. 10.[N]
 Baba, K. 1935c. The fauna of Akkeshi Bay. I. Opisthobranchia. Journal of the Faculty of Science, Hokkaido Imperial University, series 6, Zoology 4(3):115-125, pls. 7-8.[N]
 Baba, K. 1936. Opisthobranchia of the Ryukyu (Okinawa) Islands. Journal Department Agriculture, Kyushu Imperial University 5(1):1- 50, pl. 1-3.[N]
 Baba, K. 1937. Contribution to the knowledge of a nudibranch, Okadaia elegans Baba. Japanese Journal of Zoology 7(2):147-190.[N]
 Baba, K. 1937a. Record of a nudibranch, Gymnodoris striata (Eliot) from Amakusa, Japan. Zoological Magazine, Japan [Dobutsugaku Zasshi] 49(6):216-218.[N]
 Baba, K. 1937b. Opisthobranchia of Japan (I). Journal of the Department of Agriculture, Kyushu Imperial University 5(4):195-236, pl. 4.[N]
 Baba, K. 1937c. Opisthobranchia of Japan (II). Journal of the Department of Agriculture, Kyushu Imperial University 5(7):289-344, pls. 1-2.[N]
 Baba, K. 1937d. Two new species of the nudibranchiate genus Cadlina from Sagami Bay, Japan. Venus 7(2):75-80.[N]
 Baba, K. 1937e. Duvaucelia septemtrionalis nov. sp., a nudibranchiate mollusc from the Sea of Okhotsk. Zoological Magazine, Japan [Dobutsugaku Zasshi] 49(11):391-392.[N]
 Baba, K. 1937f. Note on the colour variation of a dorid, Rostanga arbutus (Angas, 1864). Venus 7(1):1-4. [In Japanese].[N]
 Baba, K. 1937g. A new species of the nudibranchiate genus Marionia from Sagami Bay, Japan. Venus 7(3):116-120.[N]
 Baba, K. 1937h. Record of a nudibranch, Scyllaea pelagica Linne from Sagami Bay, Japan. Zoological Magazine, Japan [Dobutsugaku Zasshi] 49(7):247-249.[N]
 Baba, K. 1937i. Two new species of the nudibranchiate genus Notobryon from Sagami Bay, Japan. Venus 7(4):165-170.[N]
 Baba, K. 1938. Opisthobranchia of Kii, middle Japan. Journal of the Department of Agriculture, Kyushu Imperial University 6(1):1- 19.[N]
 Baba, K. 1938a. Three new nudibranchs from Izu, Middle Japan. Annotationes Zoologicae Japonenses 17(2):130-133.[N]
 Baba, K. 1940. Some additions to the nudibranch fauna of the northern part of Japan. Bulletin of the Biogeographical Society of Japan 10(6):103-111.[N]
 Baba, K. 1940a. Miamira flavicostata n. sp., a nudibranchiate mollusc from Amakusa, Japan. Zoological Magazine, Japan [Dobutsugaku Zasshi] 52(6):239-240.[N]
 Baba, K. 1947. Mollusca, pp. 1012-1270. In: Illustrated encyclopedia of the fauna of Japan (exclusive of insects). Revised edition. Hokuryukan Co. Ltd., Tokyo.[N]
 Baba, K. 1949. Opisthobranchia of Sagami Bay collected by His Majesty The Emperor of Japan. 194 pp., 50 pls. Iwanami Shoten, Tokyo.
 Baba, K. 1951. Some notes on the behavior of a nudibranch Melibe vexillifera Bergh. Collecting & Breeding [Saishu to Shiiku] 13(2):64-65. [In Japanese].[N]
 Baba, K. 1952. [Record of a rare sacoglossan mollusk, Lobiger (Lobiger) sagamiensis n. sp. from Sagami Bay, Japan. Zool Mag., Zool Soc Japan, 61(11): 337-338. [in Japanese]
 Baba, K. 1953. Three new species and two new records of the genus Glossodoris from Japan. Publications of the Seto Marine Biological Laboratory 3(2):205-211.[N]
 Baba, K. 1955. Opisthobranchia of Sagami Bay supplement, 59 pp., 20 pls. Iwanami Shoten, Tokyo.
 Baba, K. 1955a. Opisthobranch fauna in the vicinity of the Sado Marine Biological station, Sado Island, Japan Sea side. Collecting & Breeding [Saishu to Shiiku]17(6):165-168. [In Japanese].[N]
 Baba, K. 1956. Ecological notes on the Opisthobranchia of Japan. I. The spawning habits (3). Collecting & Breeding [Saishu to Shiiku] 18(10):312-316. [In Japanese].[N]
 Baba, K. 1957. A revised list of the species of Opisthobranchia from the northern part of Japan, with some additional descriptions. J. Fac. Sci., Hokkaido Univ.,ser. 6, Zool. 13(1-4):8-14.[N]
 Baba, K. 1957. The species of the genus Elysia from Japan. Publ. Seto Mar. Biol. Lab. 6(1): 69-74, pls 3-4.
 Baba, K. 1957a. Ecological notes on the Opisthobranchia of Japan. I. The spawning habits (4). Collecting & Breeding [Saishu to Shiiku] 19(3):81-83. [In Japanese].[N]
 Baba, K. 1957b. Ecological notes on the Opisthobranchia of Japan. II. Abnormality. Collecting & Breeding [Saishu to Shiiku] 19(7):219. [In Japanese].[N] 
 Baba, K. 1958. [Seashore life of Japan.] 148 pp., 5 pls. Hokuryukan Co. Ltd., Tokyo. [In Japanese].[N]
 Baba, K. 1959. A new record of an interesting species, Embletonia gracile Risbec, from Japan (Nudibranchia - Eolidacea). Publications of the Seto Marine Biological Laboratory 7(3):335-336, pl. 29.[N]
 Baba, K. 1959. The family Stiligeridae from Japan (Opisthobranchia-Sacoglossa). Publ. Seto Mar. Biol. Lab. 7(3): 327-334, pls 27-28.
 Baba, K. 1959. The genus Petalifera and a new species, P. ramosa, from Japan. Publ. Seto Mar. Biol. Lab. 7(3): 337-338.
 Baba, K. 1960. The genera Polycera, Palio, Greilada and Thecacera from Japan (Nudibranchia - Polyceridae). Publications of the Seto Marine Biological Laboratory 8(1):75-78, pl. 6.[N]
 Baba, K. 1960a. In: Encyclopaedia Zoologica illustrated in colours. 3. Introduction, pp. 1-33, Mollusca, pp. 38-200, pls. 19- 91. Hokuryukan Co. Ltd., Tokyo.[N]
 Baba, K. 1960b. The genera Okenia, Goniodoridella and Goniodoris from Japan (Nudibranchia - Goniodorididae). Publications of the Seto Marine Biological Laboratory 8(1):79-83, pls. 7-8.[N]
 Baba, K. 1960c. Two new species of the genus Eubranchus from Japan (Nudibranchia - Eolidacea). Publications of the Seto Marine Biological Laboratory 8(2):299-302, pl. 34.[N]
 Baba, K. 1960d. The genera Gymnodoris and Nembrotha from Japan (Nudibranchia - Polyceridae). Publications of the Seto Marine Biological Laboratory 8(1):71-74, pl. 5.[N] nudibranch NEWS Vol.4 No.04: 35 January 2002
 Baba, K. 1960e. The genus Herviella and a new species, H. affinis, from Japan (Nudibranchia - Eolidacea). Publications of the Seto Marine Biological Laboratory 8(2):303-305.[N]
 Baba, K. 1960f. Seashore life in Amami-Oshima Island. Collecting & Breeding [Saishu to Shiiku] 22(10-11):333-336. [In Japanese].[N]
 Baba, K. 1961. On two species of Doriopsis (syn. Ctenodoris) from Japan (Nudibranchia-Dorididae). Publ. Seto Mar. Biol. Lab. 9(1): 63-5
 Baba, K. 1961. The shells and radulae in Berthelinia, a bivalved sacoglossan genus. Venus 21(4): 389-401, pl 21
 Baba, K. 1961. The shells and radulae in Berthelinia, a bivalved sacoglossan genus. Venus 21(4): 389-401; pl 1.
 Baba, K. 1961. Three new species of the genus Catriona from Japan (Nudibranchia-Eolidacea). Publ. Seto Mar. Biol. Lab. 9(2): 367-372, pls 14-15.
 Baba, K. 1961. Three new species of the genus Catriona from Japan (Nudibranchia - Eolidacea). Publications of the Seto Marine Biological Laboratory 9(2):367-372, pls. 14-15.[N]
 Baba, K. 1962. Anatomical review of Subcuthona pallida Baba (Nudibranchia - Eolidacea). Publications of the Seto Marine Biological Laboratory 10(2):241-243, pl.15.[N]
 Baba, K. 1963. The anatomy of Cuthona futairo n.sp. (=C. bicolor of Baba, 1933) (Nudibranchia - Eolidoidea). Publications of the Seto Marine Biological Laboratory 11(1):109-117, pls. 5-6.[N]
 Baba, K. 1964. Description of Eubranchus inabai n.sp., from Mukaishima, Japan (Nudibranchia - Eolidoidea). Publications of the Seto Marine Biological Laboratory 12(4):285-287.[N]
 Baba, K. 1964a. The anatomy of Rizzolia lineata (Eliot) (Nudibranchia - Eolidoidea). Publications of the Seto Marine Biological Laboratory 12(4):289-294, pls. 15-16.[N]
 Baba, K. 1965. The anatomy of Facelinella quadrilineata (Baba) (Nudibranchia - Eolidoidea). Publications of the Seto Marine Biological Laboratory 12(5):409-414,pls. 26-27.[N]
 Baba, K. 1965a. Mollusca, pp. 1-326. In: New illustrated encyclopedia of the fauna of Japan, II. Hokuryukan Co. Ltd., Tokyo.[N]
 Baba, K. 1966. Gross anatomy of the specimens of the shelled sacoglossan Volvatella (= Arthessa) collected from Okino-Erabu Island, Southern Kyushu, Japan (Nudibranchia). Publ. Seto Mar. Biol. Lab. 14(3): 197-205, pls 7-10.
 Baba, K. 1966. The anatomy of Herviella yatsui (Baba, 1930) and H. affinis Baba, 1960 (Nudibranchia - Eolidoidea). Publications of the Seto Marine Biological Laboratory 14:1-6, pls. 1-2.[N]
 Baba, K. 1966a. Record of Herviella albida n. sp. from Seto, Kii, Japan (Nudibranchia - Eolidoidea). Publications of the Seto Marine Biological Laboratory 13(5):361-363, pl. 15.[N]
 Baba, K. 1967. Supplementary notes on the anatomy of Metaruncina setoensis (Baba, 1954), (N.G.) (Opisthobranchia-Cephalaspidea). Publications of the Seto Marine Biological Laboratory 15(3):185- 197.[N]
 Baba, K. 1968. [A collection of Tochuina tetraquetra (Pallas, 1788) from Shirikishinai, Hokkaido, Japan (Gastropoda: Nudibranchia).] Collecting & Breeding [Saishu to Shiiku] 30(8):257-258, figs. 1-5. [In Japanese].[N]
 Baba, K. 1968. A revised description of Alderia nigra Baba, 1937, type species of Alderiopsis, n.g., from Japan (Opisthobranchia-Sacoglossa). Bijdragen tot de Dierkunde 38: 5-11, pls. 1-2.
 Baba, K. 1968a. [On the identification of Tritonia festiva (Stearns, 1873) in Japan (Gastropoda: Nudibranchia).] Collecting & Breeding [Saishu to Shiiku] 30(8):258-259; figs. 1-2. [In Japanese]
 Baba, K. 1969. List of the Species of the Opisthobranchia from the middle-Japan sea. unpublished, 4p. newsprint. [English & Japanese]
 Baba, K. 1969. Notes on the collection of Tritonia festiva (Stearns, 1873) from the seas of Japan (Gastropoda: Nudibranchia). Veliger 12(1):132-134, fig. 1.
 Baba, K. 1969. Range extension of Tochuina tetraquetra (Pallas, 1788) to Hokkaido, North Japan (Gastropoda: Nudibranchia). Veliger 12(1):134.
 Baba, K. 1969. List of the Pleurobranchidae and the Pleurobranchaeidae from Japan. Collecting and Breeding, 31(7):190-191, figs. 1-2. [Japanese; English title]
 Baba, K. 1969b. Taxonomic study on Tritoniopsis elegans (Audouin, 1826) from Seto, Japan (Nudibranchia - Dendronotoidea). Publications of the Seto Marine Biological Laboratory 16(6):395- 398, pl. 26.[N]
 Baba, K. 1969c. Records of Learchis indica Bergh, 1896 from Japan and Hawaii (Nudibranchia: Eolidoidea). Publications of the Seto Marine Biological Laboratory 16(6):399-403, pl. 27.[N]
 Baba, K. 1970. [List of the Aplysiidae from Japan.] Collecting & Breeding 32(3): 94-96; figs. 1-5. [In Japanese]
 Baba, K. 1970. [List of the Gastropteridae and the Runcinidae from Japan.] Collecting & Breeding 32(2): 46-48; figs. 1-9. [In Japanese]
 Baba, K. 1971. Pleurobranchus hirasei n. sp., proposed for a mollusc formerly known as Oscanius testudinarius: Hirase 1927, from Japan (Opisthobranchia:Notaspidea). Venus 30(1): 23-28, pl 3.
 Baba, K. 1971. New record in Japan of Doto (Doto) pita Marcus, 1955, a nudibranch gastropod. Appendix: list of the Dotoidae from Japan. Collecting & Breeding[Saishu to Shiiku] 33(6):131-132. [In Japanese].[N]
 Baba, K. 1971a. Anatomical studies on three species of Doto (D. bella, D. japonica and D. pita) from Japan (Nudibranchia: Dendronotoidea: Dotoidae). Publications of the Seto Marine Biological Laboratory 19(2/3):73-79, pls. 4-5.[N]
 Baba, K. 1971b. Review of the anatomical aspects of Eubranchus misakiensis Baba, 1969 from Mukaishima, Japan (Nudibranchia: Eolidoidea: Eubranchidae). Venus 30(2):63-66, pl. 6.[N]
 Baba, K. 1971c. Description of Doto (Doto) fragilis nipponensis subspec. nov. from Sagami Bay, Japan (Nudibranchia: Dendronotoidea: Dotoidae). Veliger 14(2):153-154.[N]
 Baba, K. 1971d. Supplementary note on the anatomy of Eubranchus virginalis (Baba, 1949) from Japan (Nudibranchia: Eolidoidea: Eubranchidae). Publications of the Seto Marine Biological Laboratory 19(1):39-42, pl. 1.[N]
 Baba, K. 1972. Thecacera picta spec. nov. from Suruga Bay, Japan (Nudibranchia: Doridoidea: Polyceridae). Veliger 15(2):88- 90.[N]
 Baba, K. 1974. Notes on Lobiger souverbii Fischer, 1856, re-identified, of Japan (Opisthobranchia: Sacoglossa: Lobigeridae). Collecting & Breeding 36(4): 74-77.
 Baba, K. 1974. Some Comments On Lobiger-Souverbii Re Identified Of Japan Opisthobranchia Sacoglossa Lobigeridae. Veliger 16 (3). 1974. 253-257.
 Baba, K. 1974a. List of the species of Phestilla from the central and western Pacific. Chiribotan (Newsletter of the Malacological Society of Japan) 8(3):51-52. [In Japanese].[N]
 Baba, K. 1974b. New distributional record of Aegires punctilucens (d’Orbigny, 1837) from Sado Island, Japan (Nudibranchia: Doridoidea: Aegiretidae). Veliger 17(1):11-12.[N]
 Baba, K. 1974c. Aegires punctilucens (d’Orbigny, 1837) new to Japan (Opisthobranchia: Doridoidea: Aegiretidae). Collecting & Breeding [Saishu to Shiiku] 36(10):198-199. [In Japanese].[N]
 Baba, K. 1974d. The late Prof. Emer. Dr. Hiroshi Ohshima (Kyushyu University): his life and zoological works. Collecting & Breeding [Saishu to Shiiku] 36(5):103-107. [In Japanese].[N]
 Baba, K. 1975. Notes on some opisthobranchiate molluscs from Ayukawa, Echizen coast, Japan Sea side of Middle Japan. III. Nudibranchia. Collecting & Breeding [Saishu to Shiiku] 37(9):211- 212. [In Japanese].[N]
 Baba, K. 1975a. Description of Trinchesia diversicolor spec. nov. from the Japan Sea coast of Middle Japan (Nudibranchia: Eolidoidea: Cuthonidae). Veliger 17(3):251-254.[N]
 Baba, K. 1975b. Supplementary note on the internal anatomy of a mollusc Eubranchus horii Baba, 1960 (Nudibranchia: Eolidoidea: Eubranchidae). Zoological Magazine, Japan [Dobutsugaku Zasshi] 84(1):77-78.[N]
 Baba, K. 1975c. An outline of the Phyllidiidae of Japan (Nudibranchia: Doridoidea). Collecting & Breeding [Saishu to Shiiku] 37(11):257-260.[N]
 Baba, K. 1975d. On two species of Eubranchus from Ayukawa, Echizen coast, Japan Sea side of Middle Japan (Nudibranchia: Eolidoidea: Eubranchidae). Venus 34(3-4):65-72.[N] nudibranch NEWS Vol.4 No.04: 36 January 2002
 Baba, K. 1976. Two new species and five common or rare species of the genus Dermatobranchus from Japan (Nudibranchia: Arminoidea: Arminidae). Veliger 19(1):4-12.[N]
 Baba, K. 1976a. Two species of Nembrotha (s.s.) new to Japan (Nudibranchia: Doridoidea: Polyceridae). Veliger 19(2):131-134.[N]
 Baba, K. 1976b. Record of Phyllidia zebrina n. sp. from Sagami Bay, Japan (Nudibranchia: Doridoidea: Phyllidiidae). Venus 35(1):5-8. [In Japanese].[N]
 Baba, K. 1976c. The genus Cerberilla of Japan (Nudibranchia: Eolidoidea: Aeolidiidae), with the description of a new species. Veliger 18(3):272-280.[N]
 Baba, K. 1977. Notes on Roboastra gracilis (Bergh, 1877) (Nudibranchia: Doridoidea: Polyceridae) obtained from Seto, Kii, Middle Japan. Veliger 19(3):290-292.[N]
 Baba, K. 1979. Short account of the anatomy of a nudibranchiate mollusk; Aeolidiella takanosimensis Baba, 1930 from Japan (Eolidoidea: Aeolidiidae). Veliger 22(1):12-18.[N]
 Baba, K. 1979a. Brief comment on the identification of a nudibranchiate mollusk, Aeolidiella takanosimensis Baba, 1930, from Amakusa, Japan (Eolidoidea:Aeolidiidae). Publications of the Amakusa Marine Biological Laboratory, Kyushu University 5(1):1-7.[N]
 Baba, K. 1984. Supplementary information on the morphology of Phestilla melanobranchia Bergh, 1874, from Seto, Kii, Middle Japan (Nudibranchia: Aeolidacea:Tergipedidae). Veliger 26(4):241- 247.[N]
 Baba, K. 1984a. A new species of the genus Cuthona (s.l.) (Nudibranchia: Eolidacea) from Sagami Bay, Japan. Venus 43(2):125-128.[N]
 Baba, K. 1984b. Dendrodoris tuberculosa in color from Seto, Kii, Japan. Collecting & Breeding [Saishu to Shiiku] 46(8):back cover. [In Japanese].[N]
 Baba, K. 1984c. Eolids in color from Tomioka, Amakusa, Japan. Collecting & Breeding [Saishu to Shiiku] 46(7):back cover. [In Japanese].[N]
 Baba, K. 1984d. Personal notes. Shells & Sea Life 16(1):3.[N]*Baba, K. 1985. An illustrated key to the Chromodoridinae genera of Japan (Mollusca: Nudibranchia:Dorididae). Shells & Sea Life 17(10):225-228.[N]
 Baba, K. 1985. Anatomical review of a cephalaspidean mollusk, Nakamigawaia spiralis Kuroda & Habe in Habe, 1961, (Aglajidae), from Japan. Spec Publ,Mukaishima Mar Biol Sta., 1985,pp 1-5.
 Baba, K. 1986. Description of a New Species of Nudibranchiate Mollusca, Paradoris tsurugensis, Dorididae, from Japan. Bolm. Zool., Univ. S. Paulo, 10:1-8, figs.1-3. [Parodoris granulata, Parodoris mulciber, Percunas mulciber].[N]
 Baba, K. 1986. Hexabranchus of Japan in color. Collecting & Breeding [Saishu to Shiiku] 48(7):back cover. [In Japanese].[N]
 Baba, K. 1986a. Janolus in Japan. Shells & Sea Life 18(11):182-184.[N]
 Baba, K. 1986b. Noumea purpurea Baba, 1949 from Akazumi, W. coast of Noto Peninsula, Japan. Janolus (Takaoka Biological Club) (67):1. [In Japanese].[N]
 Baba, K. 1987. Two new green-colored species of Tambja from Japan (Nudibranchia: Polyceridae). Venus 46(1):13-18.[N]
 Baba, K. 1987a. A new species of Noumea from Ogi, Toyama Bay and vicinity, Japan (Nudibranchia: Chromodorididae). Venus 46(1):19-24.[N]
 Baba, K. 1987b. Noumea sp. from Echizencho, Echizen coast, Japan. Janolus (Takaoka Biological Club) (69):2. [In Japanese].[N]
 Baba, K. 1987c. Noumea nivalis Baba, 1937 from Fukuura, W. coast of Noto Peninsula, Japan. Janolus (Takaoka Biological Club) (69):1. [In Japanese].[N]
 Baba, K. 1987d. Chromodoris sinensis Rudman, 1985 = Glossodoris marginata of Baba, 1938 from Akazumi and Fukuura, W. coast of Noto Peninsula, Japan.Janolus (Takaoka Biological Club) (68):1. [In Japanese].[N]
 Baba, K. 1987e. Janolus in Japan (abstracted). Janolus (Takaoka Biological Club) (70):2-3. [In Japanese].[N]
 Baba, K. 1987g. Anatomical review of Coryphella from Akkeshi Bay, Hokkaido, northern Japan (Nudibranchia: Flabellinidae s.l.). Venus 46(3):151-156.[N]
 Baba, K. 1987h. A new species of Coryphella from Toyama Bay, Japan (Nudibranchia: Flabellinidae s.l.). Venus 46(3):147-150.[N]
 Baba, K. 1988. Anatomical information on Thorunna (=Babaina) (Nudibranchia: Chromodorididae) from Toyama Bay and vicinity, Japan. Veliger 30(3):325-328.[N]
 Baba, K. 1988a. Colorful slugs. Collecting & Breeding [Saishu to Shiiku] 50(4):150. [In Japanese].[N]
 Baba, K. 1988b. Studies on Opisthobranchia by H. M. the Emperor of Japan. Collecting & Breeding [Saishu to Shiiku] 50(4):162-163. [In Japanese].[N]
 Baba, K. 1988c. Japanese Opisthobranchia of difficult identification. Collecting & Breeding [Saishu to Shiiku] 50(4):164. [In Japanese].[N]
 Baba, K. 1988d. Anatomical review of Diaphorodoris (=Lamellidoridella) from Japan (Nudibranchia: Onchidorididae). Venus 47(2):83-87.[N]
 Baba, K. 1988e. Comparative study on two species of Glossodoris from Japan (Nudibranchia: Chromodorididae) Venus 47(3):158-166, 6 figs. [G.misakinosibogae n.sp., G. atromarginata, Japanese summary]
 Baba, K. 1988f. Dendrodoris tuberculosa (Q. & G. 1832; Doris), variety form, from Ishigaki-shima, Okinawa, Japan. Shells & Sea Life 20(4):17.[N]
 Baba, K. 1988g. Comment on Doris lacera, from Timor, Indonesia. Shells & Sea Life 20(7):11-12.[N]
 Baba, K. 1988h. Diaphorodoris mitsuii (Baba, 1938) from Kinoura, Noto Peninsula, Japan. Janolus (Takaoka Biological Club) (72):1. [In Japanese].[N]
 Baba, K. 1989-03. More study on two species of Mexichromis from Japan (Nudibranchia: Chromodorididae). Venus 48(1):12-20, figs. 1-5. [M. multituberculata comb. n.; M. festiva; Japanese summary]
 Baba, K. 1989-03. Taxonomical study on two species of the “aureopurpurea” color group of Chromodoris from Japan (Nudibranchia: Chromodorididae). Venus 48(1):21-26, 3 figs. [C. aureopurpurea, C. colingwoodi, Japanese summary]
 Baba, K. 1989-06b. Description of a new species, Paradoris tsurugensis, from Japan (Nudibranchia: Dorididae). Venus 48(2):73-78, 3 figs. [Japanese summary]
 Baba, K. 1989-06c. An identification of Chromodoris leopardus Rudman, 1987 from Japan (Nudibranchia: Chromodorididae). Venus 48(2):96-98, 2 figs. [Japanese summary]
 Baba, K. 1989d. Review of the genus Ceratosoma from Japan (Nudibranchia: Chromodorididae). Venus 48(3):141-149.[N]
 Baba, K. 1989e. A new distributional record of Gymnodoris ceylonica (Kelaart, 1858) from Sagami Bay, Japan. Venus 48(3):192-194.[N]
 Baba, K. 1989f. Description of a new species of nudibranchiate Mollusca, Paradoris tsurugensis, Dorididae, from Japan. Boletim de Zoologia, Universidade de Sao Paulo 10:1-8.[N]
 Baba, K. 1989g. Review of the genus Kaloplocamus from Japan (Nudibranchia: Polyceridae s.l.). Venus 48(4):231-243.[N]
 Baba, K. 1990. Notes on the rare genera Trapania and Ancula from Japan with the description of a new species (Nudibranchia: Goniodorididae). Venus 49(1):8-18.[N]
 Baba, K. 1990. Two Small Species of Philine New of Japan (Cephalaspidea: Philinidae). Venus, 49(3):181-187, pl. 1, figs. 1-2. [Philine orca, Philine rubrata].[N]
 Baba, K. 1991. Taxonomical study on some species of the genus Phyllodesmium from Cape Muroto-misaki, Shikoku, and Okinawa Province, southern Japan (Nudibranchia: Facelinidae). Venus 50(2):109-124.[N]
 Baba, K. 1991a. The anatomy of Phyllodesmium serratum (Baba, 1949) from Japan (Nudibranchia: Facelinidae). Venus 50(2):101-108.[N]
 Baba, K. 1991b. Review of the genus Rostanga of Japan with the description of a new species (Nudibranchia: Dorididae). Venus 50(2):43-54.[N]
 Baba, K. 1992. Comment on the taxonomy of Protaeolidiella atra Baba, 1955 and an allied species (Mollusca: Nudibranchia: Aeolidiidae) from Japan. Report of the Sado Marine Biological Station (22):29-35.[N]
 Baba, K. 1992a. Critical review of Dermatobranchus striatus van Hasselt, 1824 (Nudibranchia: Arminidae) with the description of a new species. Venus 50(4):239-248.[N]
 Baba, K. 1993. A northern species of Dendronotus (Mollusca: Nudibranchia: Dendronotidae) from Sado Island, Sea of Japan. Report of the Sado Marine Biological Station (23):29-33.[N]
 Baba, K. 1993a. A new species of Dendrodoris (Mollusca: Nudibranchia: Dendrodorididae) from Sado Island, Sea of Japan. Report of the Sado Biological Station (23):25-28.[N]
 Baba, K. 1993b. Two new species of Carminodoris (Nudibranchia: Dorididae) from Japan. Venus 52(3):223-234.[N]
 Baba, K. 1988f. Dendrodoris tuberculosa (Q. & G. 1832; Doris), variety form, from Ishigaki-shima, Okinawa, Japan. Shells & Sea Life 20(4):17.[N]
 Baba, K. 1988g. Comment on Doris lacera, from Timor, Indonesia. Shells & Sea Life 20(7):11-12.[N]
 Baba, K. 1988h. Diaphorodoris mitsuii (Baba, 1938) from Kinoura, Noto Peninsula, Japan. Janolus (Takaoka Biological Club) (72):1. [In Japanese].[N]
 Baba, K. 1989-03. More study on two species of Mexichromis from Japan (Nudibranchia: Chromodorididae). Venus 48(1):12-20, figs. 1-5. [M. multituberculata nudibranch NEWS Vol.4 No.04: 37 January 2002 comb. n.; M. festiva; Japanese summary]
 Baba, K. 1989-03. Taxonomical study on two species of the “aureopurpurea” color group of Chromodoris from Japan (Nudibranchia: Chromodorididae). Venus 48(1):21-26, 3 figs. [C. aureopurpurea, C. colingwoodi, Japanese summary]
 Baba, K. 1989-06b. Description of a new species, Paradoris tsurugensis, from Japan (Nudibranchia: Dorididae). Venus 48(2):73-78, 3 figs. [Japanese summary]
 Baba, K. 1989-06c. An identification of Chromodoris leopardus Rudman, 1987 from Japan (Nudibranchia: Chromodorididae). Venus 48(2):96-98, 2 figs. [Japanese summary]
 Baba, K. 1989d. Review of the genus Ceratosoma from Japan (Nudibranchia: Chromodorididae). Venus 48(3):141-149.[N]
 Baba, K. 1989e. A new distributional record of Gymnodoris ceylonica (Kelaart, 1858) from Sagami Bay, Japan. Venus 48(3):192-194.[N]
 Baba, K. 1989f. Description of a new species of nudibranchiate Mollusca, Paradoris tsurugensis, Dorididae, from Japan. Boletim de Zoologia, Universidade de Sao Paulo 10:1-8.[N]
 Baba, K. 1989g. Review of the genus Kaloplocamus from Japan (Nudibranchia: Polyceridae s.l.). Venus 48(4):231-243.[N]
 Baba, K. 1990. Notes on the rare genera Trapania and Ancula from Japan with the description of a new species (Nudibranchia: Goniodorididae). Venus 49(1):8-18.[N]
 Baba, K. 1990. Two Small Species of Philine New of Japan (Cephalaspidea: Philinidae). Venus, 49(3):181-187, pl. 1, figs. 1-2. [Philine orca, Philine rubrata].[N]
 Baba, K. 1991. Taxonomical study on some species of the genus Phyllodesmium from Cape Muroto-misaki, Shikoku, and Okinawa Province, southern Japan (Nudibranchia: Facelinidae). Venus 50(2):109-124.[N] 
 Baba, K. 1991a. The anatomy of Phyllodesmium serratum (Baba, 1949) from Japan (Nudibranchia: Facelinidae). Venus 50(2):101-108.[N]
 Baba, K. 1991b. Review of the genus Rostanga of Japan with the description of a new species (Nudibranchia: Dorididae). Venus 50(2):43-54.[N]
 Baba, K. 1992. Comment on the taxonomy of Protaeolidiella atra Baba, 1955 and an allied species (Mollusca: Nudibranchia: Aeolidiidae) from Japan. Report of the Sado Marine Biological Station (22):29-35.[N]
 Baba, K. 1992a. Critical review of Dermatobranchus striatus van Hasselt, 1824 (Nudibranchia: Arminidae) with the description of a new species. Venus 50(4):239-248.[N]
 Baba, K. 1993. A northern species of Dendronotus (Mollusca: Nudibranchia: Dendronotidae) from Sado Island, Sea of Japan. Report of the Sado Marine Biological Station (23):29-33.[N]
 Baba, K. 1993a. A new species of Dendrodoris (Mollusca: Nudibranchia: Dendrodorididae) from Sado Island, Sea of Japan.
 I.Hamatani & *Baba, K. 2003. A New Record of Aplysia (Varria) extraordinaria (Allan, 1932) (Opisthobranchia: Anaspidea) from Suruga Bay, Japan