The Diatomaceæ of Philadelphia and Vicinity

by Charles S. Boyer

Fig. Page NAVICULA 1-2 Navicula cuspidata Kuetz. [100] 3 Navicula cuspidata var. ambigua (Ehr.) Cl. [100] 4 Navicula spicula (Hickie) Cl. [100] 5 Navicula integra Wm. Sm. [99] 6 Navicula mutica Kuetz. [97] 8 Navicula americana Ehr. [98] 9 Navicula pupula var. bacillarioides Grun. [98] 10 Navicula bacillum Ehr. [98] 11 Navicula semen Ehr. [98] 12 Navicula atomus Nægeli. [100] 13 Navicula minima Grun. [98] 14 Navicula ramosissima (Ag.) Cl. [95] 15 Navicula crucigera (Wm. Sm.) Cl. [100] 16 Navicula viridula var. rostellata Kuetz. [95] 17 Navicula radiosa Kuetz. [94] 19 Navicula gracilis var. schizonemoides (Ehr.) V. H. [95] 20 Navicula peregrina Ehr. [94] 21 Navicula cyprinus (Wm. Sm.) [95] 22 Navicula reinhardtii Grun. [95] 23 Navicula lanceolata var. arenaria (Donk.) Cl. [95] 24 Navicula salinarum Grun. [95] 25 Navicula gastrum Ehr. [96] 26 Navicula anglica Ralfs. [96] DIPLONEIS 7 Diploneis oculata (Bréb.) Cl. [86] STAURONEIS 18 Stauroneis frickei var. angusta n. var. [88]

Fig.		Page
NAVICULA
1-2	Navicula cuspidata Kuetz.	[100]
3	Navicula cuspidata var. ambigua (Ehr.) Cl.	[100]
4	Navicula spicula (Hickie) Cl.	[100]
5	Navicula integra Wm. Sm.	[99]
6	Navicula mutica Kuetz.	[97]
8	Navicula americana Ehr.	[98]
9	Navicula pupula var. bacillarioides Grun.	[98]
10	Navicula bacillum Ehr.	[98]
11	Navicula semen Ehr.	[98]
12	Navicula atomus Nægeli.	[100]
13	Navicula minima Grun.	[98]
14	Navicula ramosissima (Ag.) Cl.	[95]
15	Navicula crucigera (Wm. Sm.) Cl.	[100]
16	Navicula viridula var. rostellata Kuetz.	[95]
17	Navicula radiosa Kuetz.	[94]
19	Navicula gracilis var. schizonemoides (Ehr.) V. H.	[95]
20	Navicula peregrina Ehr.	[94]
21	Navicula cyprinus (Wm. Sm.)	[95]
22	Navicula reinhardtii Grun.	[95]
23	Navicula lanceolata var. arenaria (Donk.) Cl.	[95]
24	Navicula salinarum Grun.	[95]
25	Navicula gastrum Ehr.	[96]
26	Navicula anglica Ralfs.	[96]
DIPLONEIS
7	Diploneis oculata (Bréb.) Cl.	[86]
STAURONEIS
18	Stauroneis frickei var. angusta n. var.	[88]

PLATE 27

Fig. Page STAURONEIS—Continued 1 Stauroneis phœnicenteron Ehr. [88] 2 Stauroneis acuta Wm. Sm. [89] 3 Stauroneis americana A. S. [89] 4 Stauroneis anceps var.? [88] 5 Stauroneis anceps var. gracilis (Ehr.) Cl. [88] 6 Stauroneis salina Wm. Sm. [89] 7 Stauroneis anceps var. amphicephala (Kuetz.) Cl. [88] 8 Stauroneis anceps var.? [88] 9 Stauroneis anceps var.? [88] 10 Stauroneis crucicula (Grun.) Cl. [89] 11 Stauroneis smithii Grun. [89] NAVICULA 12 Navicula lacustris Greg. [92] 13 Navicula hasta Pant. [97] 14 Navicula hasta var. punctata n. var. [97] 15 Navicula punctata var. asymmetrica Lagerstedt [92] 16 Navicula dicephala Wm. Sm. [96] 17 Navicula placenta Ehr. [94] 18-19 Navicula inflexa Greg. [96] 20 Navicula pinnata Pant.? [96] 21 Navicula oblonga Kuetz. [97] 22 Navicula pennata A. S. [96] 23 Navicula pygmæa Kuetz. [94] 24 Navicula humilis Donk. [96]

Fig.		Page
STAURONEIS—Continued
1	Stauroneis phœnicenteron Ehr.	[88]
2	Stauroneis acuta Wm. Sm.	[89]
3	Stauroneis americana A. S.	[89]
4	Stauroneis anceps var.?	[88]
5	Stauroneis anceps var. gracilis (Ehr.) Cl.	[88]
6	Stauroneis salina Wm. Sm.	[89]
7	Stauroneis anceps var. amphicephala (Kuetz.) Cl.	[88]
8	Stauroneis anceps var.?	[88]
9	Stauroneis anceps var.?	[88]
10	Stauroneis crucicula (Grun.) Cl.	[89]
11	Stauroneis smithii Grun.	[89]
NAVICULA
12	Navicula lacustris Greg.	[92]
13	Navicula hasta Pant.	[97]
14	Navicula hasta var. punctata n. var.	[97]
15	Navicula punctata var. asymmetrica Lagerstedt	[92]
16	Navicula dicephala Wm. Sm.	[96]
17	Navicula placenta Ehr.	[94]
18-19	Navicula inflexa Greg.	[96]
20	Navicula pinnata Pant.?	[96]
21	Navicula oblonga Kuetz.	[97]
22	Navicula pennata A. S.	[96]
23	Navicula pygmæa Kuetz.	[94]
24	Navicula humilis Donk.	[96]

PLATE 28

Fig. Page PINNULARIA 1 Pinnularia nobilis Ehr. [103] 2 Pinnularia major var. pulchella n. var. [102] 3 Pinnularia dactylus Ehr. [103] 4 Pinnularia major (Kuetz.) Wm. Sm. [102]

Fig.		Page
PINNULARIA
1	Pinnularia nobilis Ehr.	[103]
2	Pinnularia major var. pulchella n. var.	[102]
3	Pinnularia dactylus Ehr.	[103]
4	Pinnularia major (Kuetz.) Wm. Sm.	[102]

PLATE 29

Fig. Page PINNULARIA—Continued 1 Pinnularia gentilis (Donk.) Cl. [103] 2 Pinnularia viridis Nitzsch. [104] 3 Pinnularia dactylus var. dariana (A. S.) Cl. [103] 4 Pinnularia viridis var. fallax Cl. [104] 5 Pinnularia socialis Palmer [104] 6 Pinnularia æstuarii Cl. [105] 7 Pinnularia rectangulata (Greg.) Cl. [110] 8 Pinnularia trigonocephala Cl. [103] 9 Pinnularia major (Kuetz.) Wm. Sm. (small form near P. viridis) [102] 10 Pinnularia dactylus var. demeraræ Cl. [103] 11 Pinnularia mormonorum (Grun.) [107] 12 Pinnularia brébissonii (Kuetz.) Cl. [107] 13 Pinnularia mesolepta Ehr. [105] 14 Pinnularia termes var. stauroneiformis V. H. [106] 15 Pinnularia molaris (Grun.) Cl. [105] 16 Pinnularia braunii Grun. [106] 17 Pinnularia termes (Ehr.) A. S. [106] 18 Pinnularia appendiculata (Ag.) Cl. [106] 19 Pinnularia microstauron (Ehr.) Cl. var.? [106] 20 Pinnularia subcapitata Greg. [105]