3S. 

 37. 



38. 

 39. 

 40. 

 41. 

 42. 

 43. 

 44. 

 45. 

 46. 



47. 



4S. 

 49. 



50. 

 51. 



r,-7 



5i3. 

 57. 

 5S. 

 59. 

 t:o. 

 61. 

 62. 

 63. 

 64. 

 65. 



6G. 

 67. 

 68. 

 69. 



70. 

 71. 



7>3. 



7;). 

 80. 



81. 



Tellina 

 Tellina 



Macoma ediilis, A'uft. 

 Macoma inconspicua, B. ^- Sb^. 

 Macoma nasuta, Cunr, 

 Macoma secta, Conr. 

 Scrobicularia alta, Conr. 

 Strigilla carnaria, Linn. 

 Semele decisa, Conr. 

 Semele rubrolineata, Conr. 

 Cumingia californica, Conr. 



Donacidfe. 

 Donax californicus, Conr. 

 Donax flexuosus, Old. 

 Arcopagia vicina, C. B. Ad. 



Macfiidie. 

 Mactra californica, Conr. 

 Mactra falcata, (jld. 

 Mactra planulata, Conr. 



Veneridaj. 

 Trigona crassatelloides, Conr. 

 ?Trigona tantilla, Gld. 

 Dione callosa, Conr. 

 Venus calif oruiensis, Sbij. 

 Venus dispar. 

 Venus excavata, Cpr. 

 Venus fluctifraga, Shy. 

 Venus Nuttallii, Conr. 

 Venus 



Tapes gracilis, Gld. 

 Tapes Petitii, Desk. 

 Tapes rigida, Gld. 

 Tapes staminea, Conr. 



Petricolidae. 

 Petricola californica, Conr. 

 Rupellaria lamellifera, Conr. 

 Saxidomus aratus, Gld. 

 Saxidomus Nuttallii, Conr. 



Astartidae. 

 Astarte 



Trapezium californicum, Conr. 

 Cardita ventricosa, Gld. 



Chaiuidae. 

 Chama exogyra, Conr. 

 Chama pellucida, Rve. 



Cardiadie. 

 Cardium californiense. Desk. 

 Cardium {like grcenlandicum). 

 Cardium luteolabrum, Gld. 

 Cardium Nuttalli, Conr. 

 Cardium quadragenarium, Con. 

 Cardium substriatum," Conr. 



Liuciiaidse. 

 Lucina bella, Conr. 

 Lucina californica, Conr. 



83. Lucina Nuttallii, Conr. 



84. Lucina 



85. Cryptodon 

 l>iplodoaitidie. 



86. Diplodonta orbella, Gld. 

 Kelliadae. 



87. Kellia Laperousii, Desh. 



88. Kellia [rugifera]. 



89. Kellia suborbicularis, Mont. 



90. Lasea 



91. Montacuta 

 Itlydlidae. 



92. Mytilus californianus, Conr 



93. Mytilus edulis, Linn. 



94. Mytilus glomeratus, Gld. 



95. Septifer 



96. Modiola capax, Conr. 



97. Modiola elongata, Sumins. 



98. Modiola flabellata, Gld. 



99. Modiola modiolus Linn. 



100. Modiola nitens, Cpr. 



101. Modiola recta, Conr. 



102. Modiola 



103. Crenella {like discrepansj. 



104. Lithophagus falcatus, Gld. 



105. Lithophagus 

 A read at. 



106. Area labiata, Shy. 



107. Area ?multicostata, Sby. 



108. Byssoarca pernoides, Cpr. 



109. Axinaea septentrionalis, M. 

 iViiciilida;. 



110. Nucula caelata, Hds. 



111. Nucula ?tenuis, Mont. 



112. Leda ?caudata, Mont. 



113. Leda 



114. Yoldia 



115. Yoldia 

 Pectinidae. 



116. Pecten Fabricii, Phil. 



117. Pecten hericius, Gld. 



118. Pecten {like Islandicus). 



119. Pecten latiauratus, Conr. 



120. Pecten ?nodosus, Linn. 



121. Pecten purpuratus. Lam. 



122. Pecten ?ventricosus. Shy. 



123. Amusium caurinum, Gld. 



124. Janeira florida, Hds. 



125. Hinnites giganteus, Gray. 

 Ostraeidae. 



126. Ostrea conchaphila, Cpr. 



127. Ostrea [lurida]. 



128. Ostrea rufa, Gld. 

 Anoiuiadae. 



129. Placunanomia alope, Gray. 

 («) 



