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The Diatomaceæ of Philadelphia and Vicinity

PLATE 38

Reading edition

Fig. Page 1 Amphora gigantea var. fusca A. S. 65 2 Meloseira crenulata (Ehr.) Kuetz. 15 3-4 Licmophora baileyi (Edw.) Grun. 40 5 Coscinodiscus polyacanthus Grun. 22 6-7 Ditylum intricatum (West) Grun. 30 8 Pyxidicula cruciata Ehr. 19 9 Gyrosigma scalproides (Rab.) Cl. 76 10 Coscinodiscus asteromphalus var. omphalantha (Ehr.) Grun. 23 11 Rhabdonema minutum Kuetz. 36 12 Gyrosigma kuetzingii (Grun.) Cl. 76 13 Gyrosigma prolongatum (Wm. Sm.) Cl. 76 14 Cymbella parva (Wm. Sm.) Cl. 61 15 Gomphoneis herculaneum (Ehr.) Cl. (zone view) 70 16 Cymbella ventricosa Kuetz. 62 17-18 Eunotia sp. (abnormal?) 54

Illustration from The Diatomaceæ of Philadelphia and Vicinity

Fig. Page

1 Amphora gigantea var. fusca A. S. 65

2 Meloseira crenulata (Ehr.) Kuetz. 15

3-4 Licmophora baileyi (Edw.) Grun. 40

5 Coscinodiscus polyacanthus Grun. 22

6-7 Ditylum intricatum (West) Grun. 30

8 Pyxidicula cruciata Ehr. 19

9 Gyrosigma scalproides (Rab.) Cl. 76

10 Coscinodiscus asteromphalus var. omphalantha (Ehr.) Grun. 23

11 Rhabdonema minutum Kuetz. 36

12 Gyrosigma kuetzingii (Grun.) Cl. 76

13 Gyrosigma prolongatum (Wm. Sm.) Cl. 76

14 Cymbella parva (Wm. Sm.) Cl. 61

15 Gomphoneis herculaneum (Ehr.) Cl. (zone view) 70

16 Cymbella ventricosa Kuetz. 62

17-18 Eunotia sp. (abnormal?) 54

Illustration from The Diatomaceæ of Philadelphia and Vicinity
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