NORTH AMERICAN CONCHOLOGY. 



so 



Family Plicacea Lam. 

 Pa. "Fig. Pa. Fig. 



245 188 Tornatella puncto-striata Adams. 



Family Scalariana Lam. 



246 



Vermetus lumbricalis Lin. 

 Vermicularia lumbricalis Lam. 

 Vermetus lumbricalis Lam. 

 Serpula lumbricalis Lin. 

 247 189 Skenea serpuloides Montagu. 

 Hi lix serpuloides Mont. 

 Turbo serpuloides Turton. 

 Delphinula 1 serpuloides Ad. 

 Delphinoidea serpuloidea Brown. 



248 Scalaria Nov-Angliae Couth. 



249 170* Grcenlandica Chemn. 



Turbo clathrus G rcenlandicus 

 Cheinn. 

 S. planicosta Kiener. 

 subulata Couth. 



250 lineata Say. 



251 multistriata Say. 



Family TurMnacea 



252 



Margarita cinerea Couth. 

 Turbo cinereus Couth. 

 Trochus costalis Loven. 



253 171* obscura Couth. 



Turbo obscurus Couth. 



254 172* undulata Sowb. 



Turbo incarnatus Couth. 



255 173* arctica Leach. 



M. helicoides Beck MSS. 

 Turbo inflatus Totten. 

 Paludina injlata Menke. 



256 174* argentata Gould. 



257 175* Littorina rudis Don. 



Turbo rudis Don. 



obligatus Say. 



259 176* tenebrosus Mont. 



Turbo tenebrosus Mont. 

 vestitus Say. 



260 177* palliata Say. 



Turbo palliatus Say. 



neriloidcs? Lin. 

 262 178* Lacuna vincta Mont. 

 Turbo vinctus Mont. 



263 170 



265 171 



266 172 

 267 



268 173 



269 174 



270 175 



270 176 



272 177 



273 178 



274 179 



Lam. 



quadrifasciatus Flem. 

 L. pertusa Conr. 

 (var.) fusca. 

 Lacuna neritoidea Gould. 

 Cingula minuta Tott. 



aculeus Gould. 

 Turritella erosa Couth. 



interrupta Tott. 

 Pyramis striatula Couth. 

 Odostomia producta Adams. 

 Jaminia producta Adams. 

 fusca Adams. 



Pyramis fusca Adams. 

 Jaminia fusca Adams. 

 exigua Couth. 



Jaminia exigua Couth. 

 Rissoa rupestris Forbes. 

 Turritella bisuturalis? Say. 

 seminuda Adams. 



Jaminia seminuda Adams. 

 trifida Tott. 



Actxon trifdus Tott. 



Family Canalifera Lam. 



275 180 Cerithium Emersonii Adams. 



276 181 terebrale Adams. 



277 182 nigrocinctum Adams. 



278 183 Sayi Menke. 



C. reticidatum Tott. 

 Pasithea nigra Tott. (young). 



279 184 Greenii Adams. 



280 185 Pleurotoma decussata Couth. 

 2S1 186 bicarinata Couth. 



282 187 plicata Adams. 

 2S3 190 Cancellaria Couthouyl Jay. 

 C. buccinoides Couth. 



