The Diatomaceæ of Philadelphia and Vicinity

PLATE 8

Reading edition

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

Illustration from The Diatomaceæ of Philadelphia and Vicinity

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