3 



136. Donax assimilis, Hani. 



137. Donax bella, Desk. 



138. Donax caelatus, Cpr. 



139. Donax carinatus, Hani. 



140. Donax Carpenter!, //. fr A. Ad. 



141. Donax Conradi, Desk. 



142. Donax culminatus, Cpr. 



143. Donax gracilis, Hani. 



144. Donax navicula, Hani. 



145. Donax ovalina, Desk. 



146. Donax panamensis. 



147. Donax punctatostriatus, Hani. 



148. Donax transversus, Sby. 



Mactridae. 



149. Mactra angulata, Gray. 



150. Mactra angusta, Desk. 



151. Mactra californica, Desh. 



152. Mactra exoleta, Gray. 



153. Mactra fragilis, Chemn. 



154. Mactra goniata, Gray. 



155. Mactra laciniata. 



156. Mactra pallida. 



157. Mactra velata, Phil.. 



158. Raeta elegans, Sby. 



159. Rangia mendica, Old. 



Veneridae. 



160. dementia gracillima, Cpr 



161. Trigona argentina, Sby. 



162. Trigona humilis, Cpr. 



163. Trigona planulata, Sby. 



164. Trigona radiata, Sby. 



165. Dosinia Annse, Cpr. 



166. Dosinia Dunkeri, Phil. 



167. Dosinia ponderosa, Gray. 



168. Cyclina producta, Q?r. 



169. Cyclina subquadrata, Hani. 



170. Dione aurantia, Hani. 



171. Dione brevispinosa, 5fy. 



172. Dione chionaea, Mke. 



173. Dione circinata, .Born. 



174. Dione concinna, Sby. 



175. Dione consanguinea, C. B. Ad. 



176. Dione lupinaria, Less. 



177. Dione rosea, Brod. # Sby. 



178. Dione unicolor, Sby. 



179. Dione vulnerata, Brod. 



180. Cytherea petichialis, Lam. 



181. Venus amathusia, Phil. 



182. Venus californiensis, rod. 



183. Venus columbiensis, Sby. 



184. Venus crenifera, Sby. 



185. Venus distans, Phil. 



186. Venus fluctifraga, Sby. 



187. Venus fuscolineata, Z2r. fr /S6y. 



188. Venus gnidia, rod. ^ &amp;gt;%. 



189. Venus Kellettii, Hds. 



190. Venus multicostata, Sby. 



191. Venus neglecta, Gray. 



192. Venus ornatissima, Brod. 



193. Venus pulicaria, Brod. 



194. Venus reticulata, Ln. 



195. Venus undatella, Sby. [Sby 



196. Anomalocardia subimbricata, 



197. Anomalocardia subrugosa, S. 



198. Tapes grata, Say. 



199. Tapes histrionica, Sby. 



200. Tapes squamosa, Cpr. 



201. Tapes tenerrima, Cpr. 



Petricolidae. 



202. Petricola cognata, C. B. Ad. 



203. Petricola dactylus, Sby. 



204. Petricola denticulata, Sby. 



205. Petricola robusta, Sby. 



206. Petricola ventricosa, Desh. 



207. Rupellaria exarata, Cpr. 



208. Rupellaria foliacea, Desh. 



209. Rupellaria lingua-felis, Cpr. 



210. Rupellaria paupercula, Desh. 



211. Naranio scobina, Cpr. 



Astartidae. 



212. Gouldia pacifica, C. B. Ad. 



213. Gouldia varians, Cpr. 



214. Circe margarita, Cpr. 



215. Circe subtrigona, Cpr. 



216. Crassatella gibbosa, Sby. 



217. Trapezium 



218. Cardita affinis, Brod. 



219. Cardita californica, Desh. 



220. Cardita crassa, Gray. 



221. Cardita Cuvieri, Brod. 



222. Cardita laticostata, Sby. 



223. Cardita radiata, Brod. 



Cliamidae. 



224. Chama Buddiana, C. B. Ad. 



225. Chama corrugata, Brod. 



226. Chama echinata, Brod. 



227. Chama exogyra, Conr. 



228. Chama frondosa, Brod. 



229. Chama panamensis, Rve. 



230. Chama producta, Brod. 



231. Chama spinosa, Sby. 



Cardiadae. 



232. Cardium alabastrum, Cpr. 



233. Cardium Belcheri, Brod. $ Sby. 



234. Cardium biangulatum, B. &amp;lt;* Sby. 



235. Cardium censors, Brod. fr Sby. 



236. Cardium Cumingii, Brod. 



237. Cardium elatum, Sby. 



238. Cardium graniferum, Brod. $- S. 



239. Cardium maculosum. Wood. 



