c 



¥ 



Fm. 



PUTE 57. 



1 Endoceras proteiforme 



Pao. 



216 



Plate 59. 



1 Endoceras distans 220 



2 Ormoceras teuuitilum . . . 222 



Plate 59. 

 Endoceras proteiforme, 

 ' far. tenuitextum.,.. 217 



2 Kar. tenuistriatum. . . 217 



3 ear. lineolatum 217 



4 Conularia trentonensis.. . 222 



■'' — granulata 223 



6 — papillata 223 



' — gracile 22 1 



Plate 60. 



1 Ogygia.' vetusta 227 



2 Asaphus .> extans 228 



3 Calymene multicosta .... 228 



4 Illxoiu crassicauda 229 



5 — trentonensis .... 230 



6 — latidorsata 230 



7 laoteltu gigaa 231 



PI.ATK 61. 



1 Asapbiu? nodostriatus... 248 



2 Ceraurus .' pustulosus. . . . 246 



3 Isotelus gigas 233 



Plate 62. 

 1 Iiotelus gigas , . , . 



233 



Plate 63. 

 1 Isotelus gigas 234 



Plate 64. 



1 Platynotus trentonensis . . 235 



2 Calymene beclcii 237 



3 — senaria 238 



4 Acidaspis trentonensis . . 240 



5 — spiniger 241 



6 Phacops? laticaudos .... 248 



Plate 65. 



1 Ceraurus pleurexanthemus, 242 



2 — vigilans 245 



3 Phacops callicephalus . . . 247 



4 Trinucleus concentricus . 249 



Plate 66. 



1 Ceraurus pleurexanthemus, 243 



2 Calymene beckii 250 



3 — {»p. indet.) 253 



4 Asaphus.' latiir.arginatus. 253 



5 Isotelus gigas 254 



[ PaLjEONTOLOGV.] 



LIST OF PLATES. 



Pro. 



Pas. 



Plate 67. 



1 Trinucleus concentricus . 255 



2 Olenus asaphoides 256 



3 — undulostriatus . . 258 



4 Calymene beckii 250 



5 Agnostus lobatus 258 



6 Tbaleops (lUaenus) ovatus, 259 



Plate 68. 



1 Sphenothallus angustifolius, 261 



2 — latifolius 262 



3 Buthotrephis subnodosa.. 262 



Plate 69. 

 1 Buthotrephis .' flexuosa . . 263 



Plate 09 a. 

 1 Buthotrephis flexuosa 



263 



Plate 70. 



1 Palsophycue virgatus 203 



2 — {»p. indet.y 264 



Plate 71. 

 1,2 Gordia marina. .. . 



264 



Plate 72. 



1 Graptnlithus pristis 205 



2 — secalinus 207 



Plate 73. 



1 Graptolithus mucronatus. 268 



2 — bicornis 208 



3 — ramosus 270 



4 — 



scalaris . . 



271 



Plate 74. 



1 Graptolithus Sagittarius . . 272 



2 — tenuis 272 



3 — sextans 273 



4 — furcatus 273 



5 — serratulus 274 



6 — gracilis 274 



7 — laevis 274 



8 — arundinaceua. 



Plate 75. 



1 Favistella stellata 275 



2 Cbaetetes lycoperdon .... 276 



3 Discophyllum peltatum.. 277 



4 {Indeterminate) 277 



Plate 76. 



1 HeterocrinusheterodactyIus,279 



2 — simplex 280 



3 — ? gracilis 280 



43 



337 



Pas. 



Fio. 



Plate 77. 

 1 Glyptocrinus decadacty lus, 281 



Plate 78. 



1 Glyptocrinus decadactylus,28l 



2 Tentaculites flexuosa .... 284 



Plate 79. 



1 Lingula quadrata 285 



2 Leptsna alternata 2S6 



3 — sericea 287 



4 Orthis testudinaria ass 



5 — .' erratica 2bS 



^* — centrilineata . . . . 289 



6 Atrypa increbesceijs y^'t 



7 Orbicula.' subtruncata .. 290 



8 — ? 



crassa 290 



caelata 290 



Plate 80. 



1 Avicula insueta 291 



2 — demissa 292 



3 — .' des{juamata .... 292 



4 Ambonychia radiata .. 292 



5 — carinata 294 



Plate 81. 



1 Modiolopsis modiolarls .. 294 



2 — nasutus 2510 



3 — truncatus 290 



4 — curta 297 



5 — ('p. in Jet.) .... 297 



Plate 82. 



1 Modiolopsis modiolaris . . 294 



2 — curta 297 



3 — anodontoides . . . 298 



4 — faba 298 



5 — .' nuculil'ormis . . . 298 



6 Orthonota pholadis 299 



7 — parallela 299 



8 — contracta Suo 



9 Cleidophorus planulatus . 300 



10 Nucula .' poststriata 3oi 



11 Lyrodesma plana 3u2 



12 — pulchella 3u2 



Plate 83. 



1 Murchisonia gracilis .... 303 



2 — uniangulata, 



var. abbreviata, 304 



3 Pleurotomaria subconica . 304 



4 — [.>] bilix 305 



5 — (sp. indet.) 305 



6 Metoptoma .' rugosa .... 306 



