ARNOLD -THE PALEONTOLOGY AKD STBATIGKAPHY OF SAN PEDRO. 75 

 MOLLUSCA (Continued). 



Subgenus Amiautis Conrad 145 



81. (A.) callosa Conrad 145 



Suhfamibj Do.tinhne 146 



Geuus Dosiuia Scopoli 146 



[S. D.] pouderosa Gray 146 



Genus Venus Linne 146 



[S. B.] perlamiuosa Conrad 146 



Subgenus Chione Megerle 147 



82. (C.) fluctifraga SowERBY 147 



83. (C.) gnidia Sowerby 147 



84. (C.) neglecta Sowerby 148 



85. (C.) simillima Sowerby 148 



86. (C.) succiucta Valenciennes 149 



Subfamily Tapeiinw 149 



Genus Tapes Megerle 149 



87. laoineata Carpenter 150 



88. staminea Conrad 150 



89. tenerrima Carpenter 151 



Genus Saxidomus Conrad 151 



90. aratus GooLD 151 



Subfamily Gtmminie 152 



Genus Psephis Carpenter 152 



91 . salmonea Carpenter 152 



92. tantilla Gould 153 



Family XX VIII. Cooperellidte 153 



Geuus Cooperella Carpenter 153 



93. subdiaphana Carpenter 153 



Family XXIX. Petricolidce 154 



Geuus Petricola Lamarck 154 



Section Petricola Lamarck, .s. s 154 



94. (P.) carditoides Conrad 154 



Section Eupellaria FledRian 155 



95. (K.) lamellifera Conrad 155 



Section Petricolaria 155 



96. (P.) dentioulata Sowerby 155 



97. (P.) cognata C. B. Adams 156 



SUPERFAMILY TELLINACEA 156 



Family XXX. Tellinidae 156 



Genus Telliua Linn^ 156 



Subgenus Moerella Fischer 156 



98. (M.) salmonea Carpenter 157 



Subgenus Augulus Megerle 157 



99. (A.) buttoni Dall 157 



100. (A.) bodegensis Hinds 158 



101. (A.) idaj Dall 158 



102. (A.) rubescens Hanley 159 



Genus Metis H. & A. Adams 160 



103. alta Conrad 160 



Genus Macoma Leach 160 



^ Subgenus Maeoma, s. s 161 



104. (M.) calcarea Gmelin 161 



105. (M.) indeutata Carpenter 161 



106. (M.) inquinata Deshayes 162 



107. (M.) uasuta Conrad 163 



108. (M.) uasuta Conrad, var. kelseyi Dall 164 



109. (M.) seota Conrad 164 



110. (M.) yoldiformis Carpenter 165 



Family XXXI. Se.melida: Schumacher 165 



