PLATE 10
Charles S. Boyer
Fig.
Page
MERIDION
1-2-3
Meridion circulare (Grev.) Ag.
40
DIATOMA
4
Diatoma vulgare var. grande (Wm. Sm.) Grun.
42
5-6
Diatoma anceps (Ehr.) Kirchn.
42
7-8
Diatoma hiemale (Lyng.) Heib.
42
9-10
Diatoma vulgare Bory.
42
PLAGIOGRAMMA
11
Plagiogramma tessellatum Grev.
43
12
Plagiogramma obesum Grev.
43
13
Plagiogramma pygmÆum Grev.
43
14
Plagiogramma wallichianum Grev.
43
EUNOTOGRAMMA
15
Eunotogramma lÆve Grun.
33
OPEPHORA
16-19
Opephora schwartzii (Grun.) Petit.
43
17
Opephora pinnata var. lanceolata n. var.
44
18
Opephora pacifica (Grun.) Petit.
43
FRAGILARIA
20-21
Fragilaria virescens Ralfs.
44
22-23
Fragilaria arctica Grun.
44
24-25-27-28-29
Fragilaria undata Wm. Sm.
44
26
Fragilaria undata Wm. Sm., var.?
44
30
Fragilaria construens (Ehr.) Grun.
45
31
Fragilaria harrisonii (Wm. Sm.) Grun.
45
34
Fragilaria capucina var. mesolepta Rab.
45
35
Fragilaria parasitica (Wm. Sm.)
45
36
Fragilaria sp. ?
45
37
Fragilaria linearis Cstr.
45
RHAPHONEIS
38
Rhaphoneis amphiceros Ehr.
46
39-40
Rhaphoneis amphiceros var. rhombica Grun.
46
41
Rhaphoneis belgica var. intermedia Grun.
46
SYNEDRA
32-33
Synedra radians Kuetz.
49
Fig.
Page
MERIDION
1-2-3
Meridion circulare (Grev.) Ag.
40
DIATOMA
4
Diatoma vulgare var. grande (Wm. Sm.) Grun.
42
5-6
Diatoma anceps (Ehr.) Kirchn.
42
7-8
Diatoma hiemale (Lyng.) Heib.
42
9-10
Diatoma vulgare Bory.
42
PLAGIOGRAMMA
11
Plagiogramma tessellatum Grev.
43
12
Plagiogramma obesum Grev.
43
13
Plagiogramma pygmÆum Grev.
43
14
Plagiogramma wallichianum Grev.
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