Diatomaceae of Philadelphia/Plates4

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



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



PLATE 33


Fig. Page
NITZSCHIA
1 Nitzschia longissima (Bréb.) Ralfs 123
2 Nitzschia intermedia Hantzsch 122
3 Nitzschia spectabilis var. americana Grun. 122
4-5 Nitzschia sigmatella Greg. 121
6 Nitzschia scalaris (Ehr.) Wm. Sm. 119
7 Nitzschia macilenta Greg. 120
8 Nitzschia insignis Greg. 119
9 Nitzschia vermicularis (Kuetz.) Hantzsch 120
10 Nitzschia longissima forma parva V. H. 123
11 Nitzschia reversa Wm. Sm. 123
12 Nitzschia acicularis (Kuetz.) Wm. Sm. 123
13-14 Nitzschia paxillifer (O. F. Mueller) Heib. 119
HOMŒOCLADIA
15 Homœocladia filiformis Wm. Sm. 123



PLATE 34


Fig. Page
SURIRELLA
1 Surirella striatula Turpin 125
2 Surirella anceps Lewis 128
3 Surirella intermedia Lewis 128
4 Surirella arctissima A. S. 128
5-6 Surirella delicatissima Lewis 128
7 Surirella intermedia Lewis forma minor? 128
CYMATOPLEURA
8-9 Cymatopleura solea (Bréb.) Wm. Sm. 129



PLATE 35


Fig. Page
SURIRELLA
1 Surirella fastuosa Ehr. 127
2 Surirella biseriata (Ehr.) Bréb. 124
3 Surirella splendida (Ehr.) Kuetz. 125
4 Surirella crumena Bréb. 126
5 Surirella ovalis Bréb. 126
6 Surirella tenera Greg. 125
7 Surirella recedens A. S. 127
8 Surirella linearis Wm. Sm. 124
9 Surirella oblonga Ehr.? 127
10 Surirella cruciata A. S. 127
11 Surirella gracilis Grun. 127
12-13 Surirella amphioxys Wm. Sm. 124



PLATE 36


Fig. Page
SURIRELLA—Continued
1 Surirella elegans Ehr. 125
2 Surirella robusta Ehr. 124
3 Surirella febigerii Lewis 128
4 Surirella gemma Ehr. 125
5 Surirella guatimalensis Ehr. 126
6 Surirella panduriformis Wm. Sm. 126
7-9 Surirella pinnata Wm. Sm. 126
8 Surirella angusta Kuetz. 127



PLATE 37


Fig. Page
CYMATOPLEURA
1 Cymatopleura elliptica (Bréb.) Wm. Sm. 129
2 Cymatopleura elliptica forma spiralis 129
3-4 Cymatopleura marina Lewis 129
CAMPYLODISCUS
5 Campylodiscus hibernicus Ehr. 130
6 Campylodiscus echeneis Ehr. 130



PLATE 38


Fig. Page
1 Amphora gigantea var. fusca A. S. 65
2 Meloseira crenulata (Ehr.) Kuetz. 15
3-4 Licmophora baileyi (Edw.) Grun. 40
5 Coscinodiscus polyacanthus Grun. 22
6-7 Ditylum intricatum (West) Grun. 30
8 Pyxidicula cruciata Ehr. 19
9 Gyrosigma scalproides (Rab.) Cl. 76
10 Coscinodiscus asteromphalus var. omphalantha (Ehr.) Grun. 23
11 Rhabdonema minutum Kuetz. 36
12 Gyrosigma kuetzingii (Grun.) Cl. 76
13 Gyrosigma prolongatum (Wm. Sm.) Cl. 76
14 Cymbella parva (Wm. Sm.) Cl. 61
15 Gomphoneis herculaneum (Ehr.) Cl. (zone view) 70
16 Cymbella ventricosa Kuetz. 62
17-18 Eunotia sp. (abnormal?) 54



PLATE 39


Fig. Page
1 Nitzschia spectabilis var. americana Grun. (zone view) 122
2 Nitzschia panduriformis Greg. 117
3 Hantzschia amphioxys (Ehr.) Grun. 113
4 Hantzschia amphioxys var. major Grun. 114
5 Nitzschia dubia Wm. Sm. 118
6 Nitzschia amphioxys Wm. Sm. 114
7 Nitzschia compressa (Bail.) 116
8 Nitzschia compressa var. minor H. L. Smith 116
9 Surirella intermedia Lewis (zone view) 128
10 Surirella arctissima A. S. forma minor 128
11 Surirella ovalis Bréb. 126
12 Surirella biseriata (Ehr.) Bréb. 124
13 Nitzschia sigma (Kuetz.) Wm. Sm. 121
14 Nitzschia obtusa var. flexella H. L. Smith 121
15 Stauroneis legumen Ehr. 89
16 Nitzschia obtusa Wm. Sm. 121



PLATE 40


Fig. Page
1 Caloneis liber (Wm. Sm.) Cl. 81
2 Anomœoneis sphærophora (Kuetz.) Cl. 80
3 Nitzschia spathulata Bréb. 120
4 Stauroneis ? abnormal 89
5 Navicula ? abnormal 101
6 Podocystis adriatica Kuetz. 129
7 Nitzschia dissipata (Kuetz.) Grun. 120
8 Cymbella ventricosa Kuetz. (zone view) 62
9 Navicula radiosa Kuetz. (zone view) 94
10 Detail of Rhabdonema arcuatum (Lyng.) Kuetz. 35
11 Diatoma anceps (Ehr.) Kirchn. (containing chromataphores) 42
12 Coscinodiscus asteromphalus Ehr. (trans. section, after Pelletan) 23
13-14-15 Transverse section (diagram) of Pinnularia showing straight, oblique and grooved raphes 101
16 Transverse section (diagram) of Biddulphia favus showing inner punctate stratum (after Deby) 31
17 Transverse (ideal) section of Surirella 124
18-19 Transverse (ideal) section of Pinnularia, before and after division 101
20 Transverse section of Nitzschia linearis (Ag.) Wm. Sm. 122
21 Transverse section (diagram) of Navicula 89
22 Transverse section (diagram) of Cymbella 60
23 Transverse section (diagram) of Amphora 65
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