143. Lucina edentula, Lin. 



144. Lucina filosa, Stm. 



145. Lucina squamosa, Lam. 



146. Lucina tigerina, Lin. 



147. Lucina strigilla, Stm. 



148. Cryptodon Gouldii, Phil. 



149. Diplodonta? punctata, Saij. 



150. Kellia planulata, Stm. 



151. Turtonia minuta, 0. Fabr. 



152. Montacuta ferruginosa, Mont. 



153. Montacuta elevata, Sim. 



154. Lepton lepidum. Say. 



155. Lepton fabagella. Con. 



156. Lepton longipes, Stm. 



157. Cyprina islandica, Lin. 



158. Astarte Banksii, Leach. 



159. Astarte striata. Leach. 



160. Astarte semisulcata, Leach. 



161. Astarte crebricostata, Forbes. 



162. Astarte lactea, Br. cj- Sou;. 



163. Astarte compressa, Lin. 



164. Astarte portlandica, Migh. 



165. Astarte quadrans, Gould. 



166. Astarte castanea, *Sa^. 



167. Astarte lunulata, Con. 



168. Cardita borealis. Con. 



169. Cardita tridentata, Sai/. 



170. Cardita floridana, Co/i. 



171. Mercenaria violacea, Schum. 



172. Mercenaria Mortoni, Con. 



173. Mercenaria notata, Sai/. 



174. Gemma Tottenii, Stm. 



Venus gemma, Totten. 



175. Chione alveata, Con. 



176. Chione cribraria, Con. 



177. Chione cancellata, Lin. 



178. Chione inaequalis. Say. 



179. Chione trapezoidalis, Kurtz. 



180. Callista gigantea, Chemn. 



181. Callista maculata, Lin. 



182. Callista convexa. Say. 



183. Dosinia discus, Reeve. 



184. Tapes fluctuosa, Could. 



185. Petricola pholadiformis, Zam. 



186. Raeta canaliculata, Say. 



187. Raeta lineata. Say. 



188. Mactra oblonga, ^Jay. 



189. Mactra polynyma, Stm. 



M. oralis, (Jould. 



190. Mactra solidissima, Chemn. 



191. Mactra similis, Say. 



192. Mactra lateralis. Say. 



193. Mactra nucleus. Con. 



194. Ceronia arctata, Con. 



195. Ceronia deaurata, Turt. 



196. Donax fossor, Say. 



197. Donax variabilis, Say. 



198. Cumingia tellinoides, Con. 



199. Semele orbiculata. Say. 



200. Abra equalis. Say. 



201. Tellina alternata, ^a;/. 



202. Tellina polita, Say. 



203. Tellina tenera, Say 



204. Tellina tenta, Say. 



205. Tellina iris, Say. 



206. Tellina brevifrons, .S'ay. 



207. Tellina elucens, Migh. 



208. Tellina decora. Say. 



209. Tellina lateralis. Say. 



210. Tellina constricta, Brug. 



211. Tellina lusoria, A'^f. 



212. Strigilla flexuosa, Say. 



213. Strigilla carnaria, Lin. 



214. Macoma fusca, Say. 



215. Macoma sabulosa, Spengl. 



216. Macoma fragilis, 0. Fabr. 



217. Tellidora lunulata, Holmes. 



218. Solen ensis, Z/i'n. 



219. Solen viridis. Say. 



220. Machaera costata. Say. 



221. Machaera squama, Blainv. 



222. Siliquaria gibba, Spengl. 



223. Siliquaria bidens, Chemn. 



224. Solenomya velum, iSay. 



225. Solenomya borealis, Tott. 



226. Mya truncata, Lin. 



227. Mya arenaria, i^in. 



228. Corbula contracta. Say 



229. Neaera pellucida, Stm. 



230. Cyrtodaria siliqua, Spenyl. 



231. Panopaea norvegica, Spengl, 



232. Panopaea americana, Con. 



233. Saxicava distorta. Say. 



234. Saxicava arctica, Lin. 



235. Anatina papyracea, Say. 



236. Cochlodesma Leana, Con. 



237. Thracia truncata, i/iyi. 



238. Thracia myopsis, Moll. 



239. Thracia Conradi, Couth. 



240. Lyonsia arenosa, Moll 



241. Lyonsia hyalina. Con. 



242. Pandora trilineata, 5ay 



243. Pholas costata, Lin. 



244. Pholas truncata. Say. 



245. Pholas oblongata, Say. 



246. Pholas semicostata, Lea 



247. Pholas crispata, /^/«. 



248. Pholadidea cuneiformla, Aay 



249. Xylotrya palmulata, Lam. 



250. Teredo dilatata, Stm. 



