# 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 |