44 CALIFORNIA ACADEMY OF SCIENCES. 



111. VoLVARiNA VARIA Sowcrby. \, Marginella varia 



(Try on). 



CLASS PELECYPODA BIVALVES. 



112. Anomia lampe Gray. Valves common; none en- 



tire . 



113. Arca grandis Broderip. 10 valves; 3 young en- 



tire. 



114. Arca MULTicosTATA Sowerby. 4 valves; 3 young 



entire. 



115. Arca pacifica Sowerby. Several valves and 3 



large fresh examples. 



116. Arca TUBERCULOSA Sowerby. Several middle sized 



examples. 



117. AvicuLA PERUVIANA Reeve. Common and very 



large. 



118. AxiN^EA GiGANTEA Reeve. 12 valves; eaten by 



natives. 



119. Barbatia fusca Bruguiere? A few, perhaps B. 



solida Sby. 



120. Barbatia gradata Broderip. A few beach-worn 



valves. 



121. Callista aurantia Hanley. 30, many fresh; 



eaten by natives. 



122. Callista chion^ea Menke. Common, eatable; 



C. squalida Sby. (in part). 



123. Callista pollicaris Carpenter. One specimen, 



determined by Dall. 



124. Cardita crassa Lamarck. Several valves, large 



and small. 



125. Cardita flammea Michelin. Several valves, large 



and small. 



126. Carditamera affinis Broderip. Valves common 



and I entire. 



