BROWN, A. ALCALA, DIESMOS AND E. ALCALA: PLATYMAIA1S 19 islands such as Cataduanes, may be recognized as additional species of the P. guentheri Group when larger samples and audiosterograms of their advertisement calls become available. Platymantis luzonensis. See list of holotype and paratypes for that species. Platymantis banahao-See list of holotype and paratypes for that species. Acknowledgments Early field work by E. H. Taylor, A. C. Alcala, and W. C. Brown provided most of the collections and much of the data on the ecology and zoogeography of this species-group. Recent field work by A. C. Alcala, A. C. Diesmos, A. Ross. E. L. Alcala, and numerous people who assisted them have provided data on populations occurring on southern Luzon and associated small islands. We are indebted to R. C. Drewes (CAS), J. E. Cadle (MCZ), R. F. Inger (FMNH), P. C. Gonzales (PNM), and E. N. Arnold and B. T. Clarke (BMNH) for permission to examine material in their collections. We also wish to thank A. E. Leviton, R. C. Drewes, and R. F. Inger for their critiques during the preparation of this paper. Drawings were prepared by C. Sudekum, California Academy of Sciences. Photographs were provided by A. C. Alcala and E. L. Alcala. Appendix A Specimens Examined Platymantis guentheri. Dinagat I, Philippines: BMNH 194723134 (holotype), Esperanza: DMNH 151-153, Mt. Magkono: DMNH 135; Mindanao L, Davao Prov: FMNH 50571, 50573; Zamboanga Prov, Dapitan Peak: CASSU 19987, 20121, 20125; Agusan del Norte Prov: CM 3424-29, Mt. Hilong-hilong: CAS 133148-49, 133287, 133307, 133313, 13333233, 133531. 133540. 133548, 133651-53, 133780-81, 186066-67, 186124-26, 196378-79; Biliran I: FMNH 318381-83; Bohol I, Sierra Bullones area (within radius of 15 km): CAS-SU 21214 (holotype of Cornufer ingeri), CAS-SU 21 196-210, 2 12 12, 2 12 16-l 7, 2 1219, 2 1709-16, 21719-20, 21724-32, 21734, 21736, 21740, 21745, 21747, 21749-55, 21757, MCZ 3809798, FMNH 134985-86 (paratypes of Cornufer ingeri). Platymantis rabori. — See list of holotype and paratypes for that species. Platymantis negrosensis-See list of holotype and paratypes for that species. Literature Cited Alcala, A. C. 1963. Breeding behavior and early development of frogs of Negros, Philippine Islands. Copeia 1963679-726. — 1986. Guide to Philippine flora and fauna: Amphibians and Reptiles. Univ. Philippines 101-195. Alcala, A. C. and W. C. Brown. 1957. Discovery of the frog Cornufer guentheri on Negros Island, Philippines, with observation on its life history. Herpetologica 13182-184. Boulenger, G. A. 1882. Catalogue of the Batrachia, Salientia, and Ecaudata in the Collection of the British Museum. Taylor and Francis, ed. 2: 1-503. Blackwell, P. R. Y. and N.T. Passmore. 1991. Advertisement calls and female phototaxis in the Natal dwarf Afrixalus (Anura: Hyperolidae). J. Afr. Zool. 105275-280. Brown, W. C. and A. C. Alcala. 1961. Populations of amphibians and reptiles in the submontane and montane forests of Cuernos de Negros, Philippine Islands. Ecology 42628-636. 1963. A new frog of the genus Cornufer (Ranidae) with notes on other amphibians known from Bohol Island, Philippines. Copeia 1963672-675. 1 970a. A new species of the genus Platymantis (Ranidae) with a list of amphibians known from South Gigante Island, Philippines. Occas. Pap. Calif. Acad. Sei. 841-8. 1 970b. The zoogeography of the herpetofauna of the Philippine Islands, a fringing archipelago. Proc. Calif. Acad. Sei. 386): 105-1 30. 1983. Modes of reproduction of Philippines anurans. Pp. 415-428 ) Advances in Herpetology and Evolutionary Biology, A. G. J. Rhodin and K. Mujata, eds. Harvard Univ. Press, Cambridge. Brown, W. C, A. C. Alcala, and A. C. Diesmos. 1997. A new species of Platymantis (Amphibia: