The Diatomaceæ of Philadelphia and Vicinity

PLATE 1

Reading edition

Fig. Page MELOSEIRA 3-4 Meloseira roeseana var. epidendron (Ehr.) Grun. 15 5-6 Meloseira roeseana Rab. 15 8-9 Meloseira distans (Ehr.) Kuetz. 14 10 Meloseira granulata (Ehr.) Ralfs 15 11-12 Meloseira sulcata Kuetz. 15 15-16-17 Meloseira undulata (Ehr.) Kuetz. 15 GAILLONELLA 13-14 Gaillonella nummuloides (Dillw.) Bory 16 LYSIGONIUM 7 Lysigonium moniliforme (Muell.) Link. 16 18-19 Lysigonium varians (Ag.) De Toni 17 HYALODISCUS 20 Hyalodiscus scoticus (Kuetz.) Grun. 18 21 Hyalodiscus radiatus var. arctica Grun. 17 22 Hyalodiscus stelliger Bail. 17 Note.—The figures in all of the plates, except when otherwise noted, are magnified 800 diameters.

Illustration from The Diatomaceæ of Philadelphia and Vicinity

Fig. Page

MELOSEIRA

3-4 Meloseira roeseana var. epidendron (Ehr.) Grun. 15

5-6 Meloseira roeseana Rab. 15

8-9 Meloseira distans (Ehr.) Kuetz. 14

10 Meloseira granulata (Ehr.) Ralfs 15

11-12 Meloseira sulcata Kuetz. 15

15-16-17 Meloseira undulata (Ehr.) Kuetz. 15

GAILLONELLA

13-14 Gaillonella nummuloides (Dillw.) Bory 16

LYSIGONIUM

7 Lysigonium moniliforme (Muell.) Link. 16

18-19 Lysigonium varians (Ag.) De Toni 17

HYALODISCUS

20 Hyalodiscus scoticus (Kuetz.) Grun. 18

21 Hyalodiscus radiatus var. arctica Grun. 17

22 Hyalodiscus stelliger Bail. 17

Note.—The figures in all of the plates, except when otherwise noted, are magnified 800 diameters.