# Diatomaceae of Philadelphia/Plates1

PLATE 1
| Fig. | | Page |
| MELOSEIRA |||
| 3-4 | Meloseira roeseana var. epidendron (Ehr.) Grun. | 15 |
| 5-6 | Meloseira roeseana Rab. | 15 |
| 8-9 | Meloseira distans (Ehr.) Kuetz. | 14 |
| 10 | Meloseira granulata (Ehr.) Ralfs | 15 |
| 11-12 | Meloseira sulcata Kuetz. | 15 |
| 15-16-17 | Meloseira undulata (Ehr.) Kuetz. | 15 |
| GAILLONELLA |||
| 13-14 | Gaillonella nummuloides (Dillw.) Bory | 16 |
| LYSIGONIUM |||
| 7 | Lysigonium moniliforme (Muell.) Link. | 16 |
| 18-19 | Lysigonium varians (Ag.) De Toni | 17 |
| HYALODISCUS |||
| 20 | Hyalodiscus scoticus (Kuetz.) Grun. | 18 |
| 21 | Hyalodiscus radiatus var. arctica Grun. | 17 |
| 22 | Hyalodiscus stelliger Bail. | 17 |
| Note.—The figures in all of the plates, except when otherwise noted, are magnified 800 diameters. |||
PLATE 2
| Fig. | | Page |
| STEPHANOPYXIS |||
| 1-2 | Stephanopyxis turris (Grev.) Ralfs | 18 |
| 3 | Stephanopyxis corona (Ehr.) Grun. | 18 |
| CYCLOTELLA |||
| 4 | Cyclotella meneghiniana var. stelligera Cl. and Grun. | 20 |
| 5-6 | Cyclotella operculata (Ag.) Kuetz. | 20 |
| 7 | Cyclotella comta (Ehr.) Kuetz. | 20 |
| 8 | Cyclotella meneghiniana Kuetz. | 19 |
| 9 | Cyclotella striata (Kuetz.) Grun. | 19 |
| 10 | Cyclotella stylorum (Br.?) V. H. | 20 |
| 11 | Cyclotella antiqua Wm. Sm. | 20 |
| 12 | Cyclotella meneghiniana var. stellulifera Cl. and Grun. | 20 |
| COSCINODISCUS |||
| 13 | Coscinodiscus denarius A. S. | 22 |
| 14 | Coscinodiscus excentricus Ehr. | 21 |
| 15-17 | Coscinodiscus subtilis Ehr. | 21 |
| 16 | Coscinodiscus asteromphalus Ehr. | 23 |
| 18 | Coscinodiscus nitidus Greg. | 21 |
| 19 | Coscinodiscus nitidulus Grun. | 21 |
| 20 | Coscinodiscus excentricus var. perpusilla Grun. ? | 21 |
PLATE 3
| Fig. | | Page |
| COSCINODISCUS—Continued |||
| 1-11 | Coscinodiscus radiatus Ehr. | 23 |
| 2 | Coscinodiscus velatus Ehr. | 22 |
| 3 | Coscinodiscus biangulatus A. S. | 23 |
| 4 | Coscinodiscus subaulacodiscoidalis Rattr. | 23 |
| 5 | Coscinodiscus lewisianus Grev. | 24 |
| 7 | Coscinodiscus argus Ehr. | 23 |
| 8 | Coscinodiscus lineatus Ehr. | 21 |
| 9 | Coscinodiscus marginatus Ehr. | 22 |
| 10 | Coscinodiscus oculus-iridis Ehr. | 23 |
| ACTINOCYCLUS |||
| 6 | Actinocyclus ellipticus var. delawarensis n. var. | 27 |
PLATE 4
| Fig. | | Page |
| ACTINOPTYCHUS |||
| 1-4-6 | Actinoptychus undulatus (Kuetz.) Ralfs. | 24 |
| 2 | Actinoptychus undulatus (inner stratum) | 24 |
| 3 | Actinoptychus heliopelta Grun. var.? | 25 |
| 5 | Actinoptychus vulgaris var. interrupta n. var. | 24 |
| POLYMYXUS |||
| 7 | Polymyxus coronalis L. W. Bail. | 25 |
| AULACODISCUS |||
| 8 | Aulacodiscus argus (Ehr.) A. S. | 26 |
PLATE 5
| Fig. | | Page |
| EUODIA |||
| 1 | Euodia gibba Bail. | 34 |
| POLYMYXUS |||
| 2 | Polymyxus coronalis L. W. Bail., zone view | 25 |
| EUPODISCUS |||
| 3 | Eupodiscus radiatus Bail. | 28 |
| AULISCUS |||
| 4 | Auliscus cælatus Bail. | 29 |
| 5 | Auliscus sculptus (Wm. Sm.) Ralfs | 29 |
| 6 | Auliscus punctatus Bail. | 28 |
| 7 | Auliscus (intermediate form between A. cælatus and A. sculptus) | 29 |
| 8 | Auliscus pruinosus Bail. | 28 |
| PSEUDAULISCUS |||
| 9 | Pseudauliscus radiatus (Bail.) Rattr. | 29 |
| 10 | Pseudauliscus spinosus (Christian) Rattr. | 29 |
PLATE 6
| Fig. | | Page |
| ACTINOCYCLUS |||
| 1 | Actinocyclus barkleyi var. aggregata Rattr. | 27 |
| 2 | Actinocyclus moniliformis Ralfs. | 27 |
| BIDDULPHIA |||
| 3 | Biddulphia antediluviana (Ehr.) V. H. | 32 |
| 5 | Biddulphia reticulum (Ehr.) | 33 |
| 6 | Biddulphia favus (Ehr.) V. H. | 31 |
| 7-8 | Biddulphia alternans (Bail.) V. H. | 33 |
| TRINACRIA |||
| 9 | Trinacria pileolus (Ehr.) Grun. | 30 |
| DITYLUM |||
| 4 | Ditylum intricatum (West) Grun. | 30 |
| TERPSINOË |||
| 10 | Terpsinoë americana (Bail.) Ralfs. | 34 |
| 11 | Terpsinoë novæ-cæsareæ Boyer | 34 |
PLATE 7
| Fig. | | Page |
| BIDDULPHIA |||
| 1-2-3-4 | Biddulphia biddulphiana (Smith) | 31 |
| 5 | Biddulphia rhombus (Ehr.) Wm. Sm. | 32 |
| 6 | Biddulphia granulata Roper | 32 |
| 7 | Biddulphia turgida (Ehr.) Wm. Sm. | 32 |
| 8 | Biddulphia smithii (Ralfs) V. H. | 32 |
| 9 | Biddulphia lævis Ehr. | 33 |
| 10 | Biddulphia lævis Ehr. Sporangial frustules (260 diam.) | 33 |
| EUNOTOGRAMMA |||
| 11 | Eunotogramma læve Grun. | 33 |
PLATE 8
| Fig. | | Page |
| RHABDONEMA |||
| 1-2-3 | Rhabdonema arcuatum (Lyng.) Kuetz. | 35 |
| 4-5-6 | Rhabdonema adriaticum Kuetz. | 36 |
| 7 | Rhabdonema minutum Kuetz. | 36 |
| TABELLARIA |||
| 8-9-10 | Tabellaria flocculosa (Roth) Kuetz. | 36 |
| 11-12 | Tabellaria fenestrata (Lyng.) Kuetz. | 36 |
| GRAMMATOPHORA |||
| 13-14 | Grammatophora marina var. subtilissima (Bail.) V. H. | 37 |
| 15-16 | Grammatophora angulosa var. hamulifera (Kuetz.) Grun. | 37 |
| 17-18 | Grammatophora marina (Lyng.) Kuetz. | 37 |
| 19-20 | Grammatophora islandica Ehr. | 37 |
| 21 | Grammatophora serpentina Ralfs. | 37 |
| STRIATELLA |||
| 22-23 | Striatella unipunctata (Lyng.) Ag. | 38 |
| 24 | Striatella interrupta (Ehr.) Heib. | 38 |
| ATTHEYA |||
| 25 | Attheya decora West | 38 |
PLATE 9
| Fig. | | Page |
| LICMOPHORA |||
| 1-2 | Licmophora flabellata (Carm.) Ag. | 39 |
| 3-4 | Licmophora lyngbyei Kuetz. | 40 |
| 5 | Licmophora ehrenbergii (Kuetz.) Grun. | 40 |
| 6-7 | Licmophora paradoxa (Lyng.) Ag. | 39 |
| 8-9 | Licmophora ovulum Mer. | 39 |
| 10 | Licmophora baileyi (Edw.) Grun. | 40 |
| 11 | Licmophora gracilis (Ehr.) Grun. | 39 |
| 12-13 | Licmophora gracilis var. elongata (Kuetz.) De Toni | 39 |
| 14-15 | Licmophora tincta (Ag.) Grun. | 40 |
PLATE 10
| Fig. | | Page |
| MERIDION |||
| 1-2-3 | Meridion circulare (Grev.) Ag. | 40 |
| DIATOMA |||
| 4 | Diatoma vulgare var. grande (Wm. Sm.) Grun. | 42 |
| 5-6 | Diatoma anceps (Ehr.) Kirchn. | 42 |
| 7-8 | Diatoma hiemale (Lyng.) Heib. | 42 |
| 9-10 | Diatoma vulgare Bory. | 42 |
| PLAGIOGRAMMA |||
| 11 | Plagiogramma tessellatum Grev. | 43 |
| 12 | Plagiogramma obesum Grev. | 43 |
| 13 | Plagiogramma pygmæum Grev. | 43 |
| 14 | Plagiogramma wallichianum Grev. | 43 |
| EUNOTOGRAMMA |||
| 15 | Eunotogramma læve Grun. | 33 |
| OPEPHORA |||
| 16-19 | Opephora schwartzii (Grun.) Petit. | 43 |
| 17 | Opephora pinnata var. lanceolata n. var. | 44 |
| 18 | Opephora pacifica (Grun.) Petit. | 43 |
| FRAGILARIA |||
| 20-21 | Fragilaria virescens Ralfs. | 44 |
| 22-23 | Fragilaria arctica Grun. | 44 |
| 24-25-27-28-29 | Fragilaria undata Wm. Sm. | 44 |
| 26 | Fragilaria undata Wm. Sm., var.? | 44 |
| 30 | Fragilaria construens (Ehr.) Grun. | 45 |
| 31 | Fragilaria harrisonii (Wm. Sm.) Grun. | 45 |
| 34 | Fragilaria capucina var. mesolepta Rab. | 45 |
| 35 | Fragilaria parasitica (Wm. Sm.) | 45 |
| 36 | Fragilaria sp. ? | 45 |
| 37 | Fragilaria linearis Cstr. | 45 |
| RHAPHONEIS |||
| 38 | Rhaphoneis amphiceros Ehr. | 46 |
| 39-40 | Rhaphoneis amphiceros var. rhombica Grun. | 46 |
| 41 | Rhaphoneis belgica var. intermedia Grun. | 46 |
| SYNEDRA |||
| 32-33 | Synedra radians Kuetz. | 49 |