282 



INDEX OF GENERA AND SPECIES. 



Clypidella, 86, 124. 

 limaculata, 86, 124. 

 callomarginata, 86, 124. 



COLUMBELLA, 10, 76. 



carinata, 76. 



gausapata, 76. 



Bichthofeni, 10, 76. 

 Colus, 111. 



arctatus, 111. 

 Com in ella, 74. 



corrugata, 74. 

 Conchocele, 27, 99. 



bisects, 27, 99. 



disjuneta, 28, 99. 

 Con us, 78, 150, 225. 



Californicus, 78. 



Hornii, 225. 



ravus, 78. 



Kemondii, 225. 



sinuatus, 150, 217. 

 Cokbula, 116, 176, 233. 



alsefbrmis, 177, 234. 



cultriformis, 234. 



Diegoana, 116. 



Evansana, 117. 



Hornii, 176, 234. 



parilis, 234. 



priinorsa, 233. 



Traskii, 234. 

 Cordiera, 153, 218. 



raicroptygma, 218. 



mitrajformis, 153, 218. 

 Crassatella, 29, 100, 189, 244. 



alta, 189, 244. 



colliua, 29, 100. 



eornpaeta, 190, 244. 



grandis, 189, 244. 



Crassatella UVasana, 244. 

 Crenella, 246. 



concentrica, 246. 

 Crepidula, 81. 



adunca, 82. 



dorsata, 82. 



lingulata, 82. 



navicelloides, 82. 



prcerupta, 81. 



rostriformis, 82. 

 Crioceras, 138. 



latus, 213. 



percostatus, 138, 213. 



Eemondu, 138, 213. 

 Crucibulum, 81. 



spinosum, 81. 

 Crypta, 81, 115, 228. 



adunca, 82. 



dorsata, 82. 



grandis, 81. 



lingulata, 82. 



navicelloides, 82. 



pileum, 228. 



pi-cerupta, 81. 



princeps, 82. 



rostralis, 82, 115. 



rostriformis, 82, 115. 

 Cryptochiton, 87, 



Stellerii, 87. 

 Crypto mya, 90, 116. 



Californica, 90, 116. 



oralis, 90. 

 Cucull^ea, 249, 271. 



cqnilateralis, 249. 



incrmis, 271. 



Muthewsonii, 249. 



truncata, 249. 



