The Diatomaceæ of Philadelphia and Vicinity

by Charles S. Boyer

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]

PLATE 30

Fig. Page PINNULARIA—Continued 1 Pinnularia cardinaliculus Cl. [107] 2 Pinnularia viridis var. fallax Cl.? (var. B., Wm. Sm.?). [104] 3 Pinnularia legumen Ehr. [107] 4 Pinnularia legumen var.? [107] 5 Pinnularia gibba (Kuetz.) V. H. [109] 6 Pinnularia mesogongyla (Ehr.) Cl. [109] 7 Pinnularia acrosphæria (Bréb.) Cl. [108] 8 Pinnularia acrosphæria var. turgidula Grun. [108] 9 Pinnularia tabellaria (Ehr.) Cl. var.? [110] 10 Pinnularia leptosoma Grun. [105] 11 Pinnularia stauroptera var. interrupta Cl. [110] 12 Pinnularia stomatophora (Grun.) Cl. [109] 13 Pinnularia stauroptera (Grun.) Cl. [110] 14 Pinnularia parva (Ehr.) Cl. var.? [108] 15-19 Pinnularia nodosa forma capitata Cl. [108] 16 Pinnularia subcapitata var. paucistriata Grun. [105] 17 Pinnularia viridis Nitzsch var. [104] 18 Pinnularia viridis var. caudata n. var. [104] 20 Pinnularia mesolepta var. stauroneiformis Grun. [105] 21 Pinnularia polyonca (Bréb.) Lewis. [108] 22 Pinnularia borealis Ehr. [109] 23 Pinnularia lata (Bréb.) Wm. Sm. [109] 24 Pinnularia borealis var. scalaris (Ehr.) Cl. [109] 25 Pinnularia blandita n. sp. [108]

Fig.		Page
PINNULARIA—Continued
1	Pinnularia cardinaliculus Cl.	[107]
2	Pinnularia viridis var. fallax Cl.? (var. B., Wm. Sm.?).	[104]
3	Pinnularia legumen Ehr.	[107]
4	Pinnularia legumen var.?	[107]
5	Pinnularia gibba (Kuetz.) V. H.	[109]
6	Pinnularia mesogongyla (Ehr.) Cl.	[109]
7	Pinnularia acrosphæria (Bréb.) Cl.	[108]
8	Pinnularia acrosphæria var. turgidula Grun.	[108]
9	Pinnularia tabellaria (Ehr.) Cl. var.?	[110]
10	Pinnularia leptosoma Grun.	[105]
11	Pinnularia stauroptera var. interrupta Cl.	[110]
12	Pinnularia stomatophora (Grun.) Cl.	[109]
13	Pinnularia stauroptera (Grun.) Cl.	[110]
14	Pinnularia parva (Ehr.) Cl. var.?	[108]
15-19	Pinnularia nodosa forma capitata Cl.	[108]
16	Pinnularia subcapitata var. paucistriata Grun.	[105]
17	Pinnularia viridis Nitzsch var.	[104]
18	Pinnularia viridis var. caudata n. var.	[104]
20	Pinnularia mesolepta var. stauroneiformis Grun.	[105]
21	Pinnularia polyonca (Bréb.) Lewis.	[108]
22	Pinnularia borealis Ehr.	[109]
23	Pinnularia lata (Bréb.) Wm. Sm.	[109]
24	Pinnularia borealis var. scalaris (Ehr.) Cl.	[109]
25	Pinnularia blandita n. sp.	[108]

PLATE 31

Fig. Page NAVICULA 1 Navicula elegans Wm. Sm. [101] 2 Navicula elegans var. cuspidata Cl. [101] 3-4 Navicula grevillei (Ag.) Cl. [99] 5 Navicula libellus Greg. [99] 6-7 Navicula palpebralis Bréb. [101] 8 Navicula rhyncocephala Kuetz. [97] 9 Navicula cryptocephala Kuetz. [97] 10 Navicula longa (Greg.) Ralfs. [97] PINNULARIA 11 Pinnularia brébissonii (Kuetz.) Cl. [107] 12 Pinnularia borealis Ehr. [109] 13 Pinnularia divergens var. elliptica Grun. [107] EPITHEMIA 14 Epithemia turgida (Ehr.) Kuetz. [111] 15-21 Epithemia argus Kuetz. [111] 16 Epithemia argus var.? [111] 17 Epithemia muelleri A. S. [111] 18 Epithemia zebra var. proboscidea (Kuetz.) Grun. [112] 19 Epithemia gibberula var. producta Grun. [112] 20 Epithemia musculus Kuetz. [112] 22 Epithemia musculus var. constricta (Bréb.) V. H. [112] RHOPALODIA 23 Rhopalodia gibba (Kuetz.) Mueller [112] 24 Rhopalodia ventricosa (Kuetz.) Mueller [113]

Fig.		Page
NAVICULA
1	Navicula elegans Wm. Sm.	[101]
2	Navicula elegans var. cuspidata Cl.	[101]
3-4	Navicula grevillei (Ag.) Cl.	[99]
5	Navicula libellus Greg.	[99]
6-7	Navicula palpebralis Bréb.	[101]
8	Navicula rhyncocephala Kuetz.	[97]
9	Navicula cryptocephala Kuetz.	[97]
10	Navicula longa (Greg.) Ralfs.	[97]
PINNULARIA
11	Pinnularia brébissonii (Kuetz.) Cl.	[107]
12	Pinnularia borealis Ehr.	[109]
13	Pinnularia divergens var. elliptica Grun.	[107]
EPITHEMIA
14	Epithemia turgida (Ehr.) Kuetz.	[111]
15-21	Epithemia argus Kuetz.	[111]
16	Epithemia argus var.?	[111]
17	Epithemia muelleri A. S.	[111]
18	Epithemia zebra var. proboscidea (Kuetz.) Grun.	[112]
19	Epithemia gibberula var. producta Grun.	[112]
20	Epithemia musculus Kuetz.	[112]
22	Epithemia musculus var. constricta (Bréb.) V. H.	[112]
RHOPALODIA
23	Rhopalodia gibba (Kuetz.) Mueller	[112]
24	Rhopalodia ventricosa (Kuetz.) Mueller	[113]

PLATE 32

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]

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]