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The Diatomaceæ of Philadelphia and Vicinity

PLATE 32

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Fig. Page NITZSCHIA 1 Nitzschia circumsuta (Bail.) Grun. 118 2 Nitzschia plana Wm. Sm. 117 3 Nitzschia granulata Grun. 116 4 Nitzschia navicularis (Bréb.) Grun. 116 5 Nitzschia panduriformis var. minor Grun. 117 6 Nitzschia apiculata (Greg.) Grun. 117 7 Nitzschia tabellaria Grun. 119 8 Nitzschia tryblionella Hantzsch 116 10-11 Nitzschia bilobata Wm. Sm. 118 12 Nitzschia litoralis var. delawarensis Grun. 118 13 Nitzschia acuminata (Wm. Sm.) Grun. 117 14-25 Nitzschia amphibia Grun. 122 15 Nitzschia palea (Kuetz.) Wm. Sm. 122 16 Nitzschia fluminensis Grun. 120 17 Nitzschia obtusa var. scalpelliformis Grun. 121 18 Nitzschia linearis (Ag.) Wm. Sm. 122 19 Nitzschia communis Rab. 122 20 Nitzschia clausii Hantzsch. 121 21 Nitzschia epithemioides Grun. 118 24 Nitzschia vermicularis (Kuetz.) Wm. Sm. 120 HANTZSCHIA 9 Hantzschia amphioxys (Ehr.) Grun. 113 22 Hantzschia marina (Donk.) Grun. 114 23 Hantzschia virgata (Roper) Grun. 114

Illustration from The Diatomaceæ of Philadelphia and Vicinity

Fig. Page

NITZSCHIA

1 Nitzschia circumsuta (Bail.) Grun. 118

2 Nitzschia plana Wm. Sm. 117

3 Nitzschia granulata Grun. 116

4 Nitzschia navicularis (Bréb.) Grun. 116

5 Nitzschia panduriformis var. minor Grun. 117

6 Nitzschia apiculata (Greg.) Grun. 117

7 Nitzschia tabellaria Grun. 119

8 Nitzschia tryblionella Hantzsch 116

10-11 Nitzschia bilobata Wm. Sm. 118

12 Nitzschia litoralis var. delawarensis Grun. 118

13 Nitzschia acuminata (Wm. Sm.) Grun. 117

14-25 Nitzschia amphibia Grun. 122

15 Nitzschia palea (Kuetz.) Wm. Sm. 122

16 Nitzschia fluminensis Grun. 120

17 Nitzschia obtusa var. scalpelliformis Grun. 121

18 Nitzschia linearis (Ag.) Wm. Sm. 122

19 Nitzschia communis Rab. 122

20 Nitzschia clausii Hantzsch. 121

21 Nitzschia epithemioides Grun. 118

24 Nitzschia vermicularis (Kuetz.) Wm. Sm. 120

HANTZSCHIA

9 Hantzschia amphioxys (Ehr.) Grun. 113

22 Hantzschia marina (Donk.) Grun. 114

23 Hantzschia virgata (Roper) Grun. 114

Illustration from The Diatomaceæ of Philadelphia and Vicinity
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