The Diatomaceæ of Philadelphia and Vicinity

by Charles S. Boyer

Fig. Page ACTINOCYCLUS 1 Actinocyclus barkleyi var. aggregata Rattr. [27] 2 Actinocyclus moniliformis Ralfs. [27] BIDDULPHIA 3 Biddulphia antediluviana (Ehr.) V. H. [32] 5 Biddulphia reticulum (Ehr.) [33] 6 Biddulphia favus (Ehr.) V. H. [31] 7-8 Biddulphia alternans (Bail.) V. H. [33] TRINACRIA 9 Trinacria pileolus (Ehr.) Grun. [30] DITYLUM 4 Ditylum intricatum (West) Grun. [30] TERPSINOË 10 Terpsinoë americana (Bail.) Ralfs. [34] 11 Terpsinoë novæ-cæsareæ Boyer [34]

Fig.		Page
ACTINOCYCLUS
1	Actinocyclus barkleyi var. aggregata Rattr.	[27]
2	Actinocyclus moniliformis Ralfs.	[27]
BIDDULPHIA
3	Biddulphia antediluviana (Ehr.) V. H.	[32]
5	Biddulphia reticulum (Ehr.)	[33]
6	Biddulphia favus (Ehr.) V. H.	[31]
7-8	Biddulphia alternans (Bail.) V. H.	[33]
TRINACRIA
9	Trinacria pileolus (Ehr.) Grun.	[30]
DITYLUM
4	Ditylum intricatum (West) Grun.	[30]
TERPSINOË
10	Terpsinoë americana (Bail.) Ralfs.	[34]
11	Terpsinoë novæ-cæsareæ Boyer	[34]

PLATE 7

Fig. Page BIDDULPHIA 1-2-3-4 Biddulphia biddulphiana (Smith) [31] 5 Biddulphia rhombus (Ehr.) Wm. Sm. [32] 6 Biddulphia granulata Roper [32] 7 Biddulphia turgida (Ehr.) Wm. Sm. [32] 8 Biddulphia smithii (Ralfs) V. H. [32] 9 Biddulphia lævis Ehr. [33] 10 Biddulphia lævis Ehr. Sporangial frustules (260 diam.) [33] EUNOTOGRAMMA 11 Eunotogramma læve Grun. [33]

Fig.		Page
BIDDULPHIA
1-2-3-4	Biddulphia biddulphiana (Smith)	[31]
5	Biddulphia rhombus (Ehr.) Wm. Sm.	[32]
6	Biddulphia granulata Roper	[32]
7	Biddulphia turgida (Ehr.) Wm. Sm.	[32]
8	Biddulphia smithii (Ralfs) V. H.	[32]
9	Biddulphia lævis Ehr.	[33]
10	Biddulphia lævis Ehr. Sporangial frustules (260 diam.)	[33]
EUNOTOGRAMMA
11	Eunotogramma læve Grun.	[33]

PLATE 8

Fig. Page RHABDONEMA 1-2-3 Rhabdonema arcuatum (Lyng.) Kuetz. [35] 4-5-6 Rhabdonema adriaticum Kuetz. [36] 7 Rhabdonema minutum Kuetz. [36] TABELLARIA 8-9-10 Tabellaria flocculosa (Roth) Kuetz. [36] 11-12 Tabellaria fenestrata (Lyng.) Kuetz. [36] GRAMMATOPHORA 13-14 Grammatophora marina var. subtilissima (Bail.) V. H. [37] 15-16 Grammatophora angulosa var. hamulifera (Kuetz.) Grun. [37] 17-18 Grammatophora marina (Lyng.) Kuetz. [37] 19-20 Grammatophora islandica Ehr. [37] 21 Grammatophora serpentina Ralfs. [37] STRIATELLA 22-23 Striatella unipunctata (Lyng.) Ag. [38] 24 Striatella interrupta (Ehr.) Heib. [38] ATTHEYA 25 Attheya decora West [38]

Fig.		Page
RHABDONEMA
1-2-3	Rhabdonema arcuatum (Lyng.) Kuetz.	[35]
4-5-6	Rhabdonema adriaticum Kuetz.	[36]
7	Rhabdonema minutum Kuetz.	[36]
TABELLARIA
8-9-10	Tabellaria flocculosa (Roth) Kuetz.	[36]
11-12	Tabellaria fenestrata (Lyng.) Kuetz.	[36]
GRAMMATOPHORA
13-14	Grammatophora marina var. subtilissima (Bail.) V. H.	[37]
15-16	Grammatophora angulosa var. hamulifera (Kuetz.) Grun.	[37]
17-18	Grammatophora marina (Lyng.) Kuetz.	[37]
19-20	Grammatophora islandica Ehr.	[37]
21	Grammatophora serpentina Ralfs.	[37]
STRIATELLA
22-23	Striatella unipunctata (Lyng.) Ag.	[38]
24	Striatella interrupta (Ehr.) Heib.	[38]
ATTHEYA
25	Attheya decora West	[38]

PLATE 9

Fig. Page LICMOPHORA 1-2 Licmophora flabellata (Carm.) Ag. [39] 3-4 Licmophora lyngbyei Kuetz. [40] 5 Licmophora ehrenbergii (Kuetz.) Grun. [40] 6-7 Licmophora paradoxa (Lyng.) Ag. [39] 8-9 Licmophora ovulum Mer. [39] 10 Licmophora baileyi (Edw.) Grun. [40] 11 Licmophora gracilis (Ehr.) Grun. [39] 12-13 Licmophora gracilis var. elongata (Kuetz.) De Toni [39] 14-15 Licmophora tincta (Ag.) Grun. [40]