The Diatomaceæ of Philadelphia and Vicinity

PLATE 40

Reading edition

Fig. Page 1 Caloneis liber (Wm. Sm.) Cl. 81 2 Anomœoneis sphærophora (Kuetz.) Cl. 80 3 Nitzschia spathulata Bréb. 120 4 Stauroneis ? abnormal 89 5 Navicula ? abnormal 101 6 Podocystis adriatica Kuetz. 129 7 Nitzschia dissipata (Kuetz.) Grun. 120 8 Cymbella ventricosa Kuetz. (zone view) 62 9 Navicula radiosa Kuetz. (zone view) 94 10 Detail of Rhabdonema arcuatum (Lyng.) Kuetz. 35 11 Diatoma anceps (Ehr.) Kirchn. (containing chromataphores) 42 12 Coscinodiscus asteromphalus Ehr. (trans. section, after Pelletan) 23 13-14-15 Transverse section (diagram) of Pinnularia showing straight, oblique and grooved raphes 101 16 Transverse section (diagram) of Biddulphia favus showing inner punctate stratum (after Deby) 31 17 Transverse (ideal) section of Surirella 124 18-19 Transverse (ideal) section of Pinnularia, before and after division 101 20 Transverse section of Nitzschia linearis (Ag.) Wm. Sm. 122 21 Transverse section (diagram) of Navicula 89 22 Transverse section (diagram) of Cymbella 60 23 Transverse section (diagram) of Amphora 65

Illustration from The Diatomaceæ of Philadelphia and Vicinity

Fig. Page

1 Caloneis liber (Wm. Sm.) Cl. 81

2 Anomœoneis sphærophora (Kuetz.) Cl. 80

3 Nitzschia spathulata Bréb. 120

4 Stauroneis ? abnormal 89

5 Navicula ? abnormal 101

6 Podocystis adriatica Kuetz. 129

7 Nitzschia dissipata (Kuetz.) Grun. 120

8 Cymbella ventricosa Kuetz. (zone view) 62

9 Navicula radiosa Kuetz. (zone view) 94

10 Detail of Rhabdonema arcuatum (Lyng.) Kuetz. 35

11 Diatoma anceps (Ehr.) Kirchn. (containing chromataphores) 42

12 Coscinodiscus asteromphalus Ehr. (trans. section, after Pelletan) 23

13-14-15 Transverse section (diagram) of Pinnularia showing straight, oblique and grooved raphes 101

16 Transverse section (diagram) of Biddulphia favus showing inner punctate stratum (after Deby) 31

17 Transverse (ideal) section of Surirella 124

18-19 Transverse (ideal) section of Pinnularia, before and after division 101

20 Transverse section of Nitzschia linearis (Ag.) Wm. Sm. 122

21 Transverse section (diagram) of Navicula 89

22 Transverse section (diagram) of Cymbella 60

23 Transverse section (diagram) of Amphora 65