7»'> CAMFOUMA AlAUKMY OF SCIENCES. 



MOLLUSCA (Continued). 



OeiiiiB Seniole 165 



111. docisn Co.NUAii 165 



1 12. pvilcbrn Sowkhuy 166 



1 l.'t. piilchni SowBRiiv, vnr. inoutereyi, var. nov 166 



QennB CuiuiiiKia Sowkkby 167 



1 14. culiforiiica Conrad 167 



Family XXX//. Psummohiidii- 167 



GeuuH Punmuiobia (Lamarck) Bowmen 167 



Snbgenns Psniumobin, h. a 167 



115. (P.) 0(leiit\ila Gabb 168 



GeunH Sanguiiiolnriii Lamarck 168 



Section Niittallin Dai.l 168 



116. (N.) nuttalli CONRAU 168 



Genus Tngclus Gray 16!) 



117. califoruianus Conrad 169 



Famili/ XXX///. Donacida: 169 



Geuus Douax (Linnk) La.marck 169 



1 18. califoruica Conrao 170 



1 19. lajvigata Deshayes 170 



SUPERFA M//. Y SOLENACKA 171 



Family XXX/V. Solenldie 171 



Geuns Soleu Linne 171 



120. rosacens Carpenter 171 



121. siearius Godi.d 172 



Genus Siliqna Meokrle <72 



122. lucidu Conrad 172 



123. patula Dixon, var. nuttalli Conrad 17.3 



SUPERFA M//. Y MACTKACEA 174 



Family XXX I'. Maclridve 174 



Subfamily Maclrinm 1 74 



Gcuus Mactra Linne 174 



124. califoruica Conrad 174 



125. exoleta Gray 175 



126. heiuphilli Dai.l 175 



Subgeuus Spisula Gray 175 



127. (S.) catilliformis Conrad 176 



128. (S.) falcata Gould 176 



Subfamily PUropsidince 177 



Genus Labiosa (Schmidt) MSller 177 



Subgenus Iticta Gray 177 



129. (R.) uudulata GooLD 177 



Snbfamdy Lulrariiniv , 178 



Genus Tresus Gray 178 



130. nuttalli Conrad 178 



SUPERFAM/LY MYACEA 179 



Family XXX VI. Myanidm 179 



Genus Platyodon Conrad 179 



131. cancellatus Conrad 179 



Genus Cryptomya Conrad 179 



132. califoruica Conrad 180 



Family XXX VII. Corbulida . . 180 



Genus Corbula (Brcgdikre) Lamarck 180 



133. luteola Carpenter 181 



Genus Neipra Gray 181 



134. pectinata Carpenter 181 



Family XXX VIII. Saxicavida: 182 



Genus Panopea Menard 182 



135. generosa Gould 182 



