INDEX Of SPECIES. 



Bucc inum 



brevidentatum, 10, 177,0178. 

 cancellatuin, 20, 218. 

 cinis, 188. 

 ciiigulatum, P 458. 

 compositum, 4. 



Corornandelianum, 188, P 516. 

 corrugatum, 49, 84, 342, 



211. 



crassum, 179, 268. 

 cribrarium. 181, P 487. 

 crispatuui, 4, 5. 

 cyaueum, 217. 

 decussatum, 



denticulatura, 10, 177, 178. 

 devinctum, 367 

 dirum, 18, 49. 

 distortum, 10, 179, 268. 

 elegans, 48, O 285. 

 elongatum, 10, 41. 

 fossatum, 17, 48, O 209. 

 fusiforme, 218. 

 gemrnatum, 238, P 515, P 542. 

 gemmulatum, 236, 238, 



0263, P 515, P 536. 

 Geversianum, 7. 

 gilvum, 236, O 263, P 508, 



P536 



glaciale, 70, 71, 218. 

 Grcenlandicum, 218. 

 hsemastoma, P 477, P 517. 

 hydrophanum, 218. 

 insigne, 179, 268, P 514. 

 interstriatutn, 77. 

 Janelii, O 204, 263, 269, 



P5I7- 



lamellosum, 5. 

 leicheilosos, 177. 

 lima, 4. 



liratum, 4, 5, 83. 

 lugubre, 179, 268. 

 luteostoma,0 238, P 495, P 542. 

 ?metu1a, 206. 

 minus, 179. 

 modestum, 185, 270. 

 modificatum, 49. 



Bucciuum 



inutabile, 204, 263, 268, 



p'sfc 



nigrocostatum, 188. 



nodatum, 10. 



Northise, 293, 



iiucleolus, 225, P 535. 



Ochotense, 19, 71, 218, 221. 



ooides, 19, 218. 



ovoides, 221. 



ovum, 218, 223, 342. 



pagodus, 179, 268, 293, 



PS'S- 



Panamense, 296. 

 parvulum, 262, 269, P 487. 

 pastinaua, 188. 

 patulum, P 474. 

 var. pelagica, 71. 

 planaxis, 10, 178, 268. 

 plicatum, 4, 5. 

 plumbum, 6. 



polaris, 177, 218, 347. 

 Poulsoni, 317, 201, 342, 



V227. 



prismaticum, 225. 



pristis, 179, 238,0 268,0 293, 



P542. 



pseudodon, 188. 

 pulchrum, 188, O 270, 



361. 



pusio, 293. 

 ringens, 179, 171, 178, 



238, 269, P 518. 

 roseum, 179. 

 Rudolphi, 178. 

 Sabinii, 217. 

 sanguinolentum, 179, 236, 



0269, P 517, P 536. 

 satururn, 4. 

 scabrum, O 218, 

 scalariforme -f- vars. 70. 

 serratum, 48, 238, 268, 



293, 294. 

 sericatum, 218. 

 simplex, 19, 218, 221. 

 Stimpsoni, 73. 



