The Diatomaceæ of Philadelphia and Vicinity

by Charles S. Boyer

PLATE 25

Fig. Page NAVICULA 1 Navicula tumida (Bréb.) Cl. [99] 2 Navicula brasiliensis var. bicuneata Cl. forma constricta. [92] 3 Navicula delawarensis Grun. [92] 4-6 Navicula pusilla Wm. Sm. [91] 5 Navicula humerosa Bréb. [91] 7 Navicula spectabilis var. emarginata Cl. [94] 8 Navicula pusilla var. subcapitata n. var. [91] 9 Navicula punctulata Wm. Sm. [92] 10 Navicula lyra Ehr. [93] 11 Navicula hennedyi var. manca A. S. [93] 12 Navicula hennedyi Wm. Sm. [93] 13 Navicula lyra var. dilatata A. S. [93] 14 Navicula yarrensis Grun. [101] 15 Navicula yarrensis Grun. (smaller form) [101] 16 Navicula yarrensis Grun. var.? [101]

Fig.		Page
NAVICULA
1	Navicula tumida (Bréb.) Cl.	[99]
2	Navicula brasiliensis var. bicuneata Cl. forma constricta.	[92]
3	Navicula delawarensis Grun.	[92]
4-6	Navicula pusilla Wm. Sm.	[91]
5	Navicula humerosa Bréb.	[91]
7	Navicula spectabilis var. emarginata Cl.	[94]
8	Navicula pusilla var. subcapitata n. var.	[91]
9	Navicula punctulata Wm. Sm.	[92]
10	Navicula lyra Ehr.	[93]
11	Navicula hennedyi var. manca A. S.	[93]
12	Navicula hennedyi Wm. Sm.	[93]
13	Navicula lyra var. dilatata A. S.	[93]
14	Navicula yarrensis Grun.	[101]
15	Navicula yarrensis Grun. (smaller form)	[101]
16	Navicula yarrensis Grun. var.?	[101]