286 



INDEX OF GENERA AND SPECIES. 



Page. 



Corbicula (Cyrona?) eecuris 76 



c ytheriformis 105, 160, 169 



1 emacerata 266 



?fracta 70 



? var. crassiuscula 77 



(Leptesthes) cardinisBlbmiis .... 16S 



fracta 160, 168 



macropi.stha. 141, 160.168 

 planumbona . 88, 160, 109 



subelliptica 105, 160 



sixbelliptica var. 



■ moreauensis 105 



nebrascensis 105, 160, 168 



nucalis TO, 99 



obesa 140, 160,169 



occidentalis 105, 160, 168 



powelli 137 



piriformis 168 



subelliptica 168 



? subti igonalis 70, 99 



umbonella 168 



( Veloritina) bannisteri 77 



cytheriformis 77 



durkeei 112, 160, 168 



inflexa 76 



Corbis lameUosa 220 



Corbula 47, 95,101, 105,111,112,134, 137,143, 



160, 207, 208, 210, 211, 213, 218, 219, 269, 272 



aleihensis 310 



( Anisorhynclius ?) engelmanni 112 



pyriformis 95, 112 



congesta 307 



crassatelliformis 160 



crassimarginata 101 



crassiplica 269 



diogoana 311,218 



dubiosa 145 



engelmanni 95 



cvansana 336 



foulkei 269 



? gregaria 15 



inomata 18,101 



mactrifonnis 15, 161, 168 



moreauensis 15 



nasuta 219 



nematopora 76, 134, 143 



(Neaera) nasntoides 373 



occidentalis 318 



(Pachydon) mactriformis 105 



perundata 105 



subtrigonalis 105 



pemndata. 15,160 



(Potamomya ?) concentrica 33 



engelmanni 23 



pyriformis 33 



pyriformis 161 



subcomprossa 269 



sublineolata 308 



subtrigonalis 15, 160,168 



subundifera 137 



syriaca .". . 208 



tropidophora 77, 160 



undifera .' 77,161,168 



var. subundifera 161, 168 



ventricosa 15 



Pagfv 



Corbulamella 18, 101 



gregaria 18, 101 



Corbulidse 101, 105, 111, 112, 134, 269, 272 



Cordieria moorei 221 



Corimya 269 



tenuis 369 



Cornulina armigcra 222 



Coroccras IIO, 339 



Cosceneis 20;i 



Costella 107 



Crania 119, 121, 177, 257 



modesta 121, 177 



permiana 257 



reposita 119 



sheldoni 119 



Craniida) . 121 



Crassatella 93, 99, 143, 208, 211, 213, 217, 237, 260 



263, 268, 270, 271 



alta 311,213,271 



cimarronensis 143 



collina 217 



conradi 270 



cuueata 268 



declivis 337 



delawarensis 268, 270 



evansii 13 



nionmouthensis 268 



obliquata 371 



(Pachythffirus) evansi 99 



piora 268 



shumardi 93 



subplana 268 



subquadrata 360, 263 



syriaca 308 



transversa 268 



uvasana 311, 213 



vadosa 268 



Crasaatellid» 30, 32, 33, 34, 99, 260, 262, 263, 268 



Crassatellina 70, 99 



oblonga 70, 99 



Crenclla 28,98 



concentrica 220 



elegantula 38, 98 



granulata cancellata 47 



Crenipecten 196 



hallanus 196 



Crepicephalus 234, 350, 259, 260, 261 



(Bathyurns ?) angulatus.... 234 



centralis 201 



(Loganellus) anytus 234 



centralis 260 



granulosus 234 



haguei 334 



maculosus 334 



montauensis. .. 359 



nitidus 334 



planus 360 



? quadrans 334 



simulator 334 



unisnlcatns 334 



planus 2C1 



CrepidiUa 212, 214 



1 206 



prajrupta 50, 306 



princeps 212, 214 



