The Diatomaceæ of Philadelphia and Vicinity

PLATE 5

Reading edition

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

Illustration from The Diatomaceæ of Philadelphia and Vicinity

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