8 



CHARTS. 



Chart No. Faee. 



91. Pontogenia inermis 309 



92. Batea secunda 310 



93. Gammarus annulatus 311 



94. Elasmopus lasvis 312 



95. Autonoe smithi 313 



96. Ptilocheinis pinguis 314 



97. Amphithoe rubricata 315 



98. Jassa marmorata 316 



99. Ericthonius minax 317 



100. Corophium cylindricum 318 



loi. Unciola irrorata 319 



102. Caprellidae sp 320 



103. Leptochelia savignyi 321 



104. Idothea baltica 322 



105. Idothea phosphorea 323 



106. Erichsonella filifomiis 324 



107. Crago septemspinosus 325 



108. Homarus americanus 326 



109. Pagurus pollicaris 327 



no. Pagurus acadianus 328 



111. Pagurus longicarpus 329 



112. Pagurus annulipes 330 



113. Pelia mutica 331 



114. Libinia emarginata 332 



115. Cancer irroratus 333 



116. Cancer borealis 334 



117. Ovalipes ocellatus 335 



118. Neopanope texana sayi 336 



119. Pinnotheres maculatus 337 



120. Tanystylum orbiculare 338 



121. Anoplodactylus lentus 339 



122. Ostrea virginica 340 



123. Anomia simplex 341 



124. Anomia aculeata 342 



125. Pecten magellanicus 343 



126. Pecten gibbus borealis 344 



127. Mytilus edulis 345 



128. Modiolus modiolus 346 



129. Modiolaria nigra 347 



130. Crenella glandula 348 



13 1 . Area ponderosa 349 



132. Area transversa 350 



133. Area eampechiensis pexata 351 



134. Nueula proxima 352 



135. Yoldia limatula 353 



136. Solemya velum 354 



137. Venericardia borealis 355 



138. Astarte imdata 356 



139. Astarte castanea 357 



140. Crassinella maetracea 358 



141. Divaricella quadrisuleata 359 



142. Cardium pinnulatum 360 



Chart No. Page. 



143. Laevicardium mortoni 361 



144. Cyclas islandica 362 



145. Venus mercenari:'- 363 



146. Callocardia morrhuana 364 



147. Petricola pholadiformis 365 



148. Tagelus gibbus 366 



149. Tellina tenera 367 



150. Macoma tenta 368 



151. Ensis directus 369 



152. Cumingia tellinoidcs 370 



153. Spisula solidissima 371 



154. Mulinia lateralis 372 



155. Thracia eonradi 373 



156. Cochlodesma leanum 374 



157. Lyonsia hyalina 375 



158. Clidiophora gouldiana 376 



159. Corbula eontraeta 377 



160. Mya arenaria 378 



161. Chaetopleura apiculata 379 



162. Tomatina canaliculata 380 



163. Cylichnella oryza 381 



164. Busycon canalieulatum 382 



165. Busycon carica 383 



166. Buccinum undatum 384 



167. Tritia trivittata 385 



168. Ilyanassa obsoleta 386 



169. Anachis avara 387 



170. Astyris limata 388 



171. Eupleiu-a caudata 389 



172. Urosalpinx einereus • 390 



173. Eulima conoidea 391 



174. Turbonilla sp 392 



175. Seila terebralis . 393 



176. Cerithiopsis emersonii 394 



177. Bittium altematum 395 



178. Caecum cooperi 396 



1 79. Vermicularia spirata 397 



180. Littorina litorea 398 



181. Lacima puteola 399 



182. Crucibulum striatum 400 



183. Crepidula fomicata 401 



184. Crepidula eonvexa 402 



185. Crepidula plana 403 



186. Polynices duplieata 404 



187. Polyniees heros 405 



188. Polynices triseriata 406 



189. Loligo pealii 407 



190. Molgula arenata and Eugy-ra glutinans . 408 



191. Molgula manhattensis 409 



192. Styela partita 410 



193. Perophora viridis 411 



194. Didenmum lutarium 412 



