91 
21:0142 Alectrion fossatus Gould, 1850. (158). 
21:0164 Alectrion insculptus Cpr., 1863, non Cooper, 1888. 
21:0165 Alectrion inscuiptus eupleura Dall. 
21:0150 Alectrion mendicus Gould, 1850. (425). 
21:0161 Alectrion nodicinctus A. Adams, 1851. 
21:0145 Alectrion perpinguis Hinds, 1844. (159), 2714 (Var.). 
21:0693 Genus Aletes Cpr. 
21:0694 Aletes squamigerus Cpr., 1856. 
1244 Alwania compacta Carpenter. 
3262 A: acutilirata. Monterey, Cal.—Baja Cal. 
3263 A: Aiquisculpta Keep. 
3246 Alvania cosmia. San Pedro, Cal.—Baja Cal. 
21:1374 Alvania purpurea Dall. 
1878 Amalia Hewstoni 
21:0699 Genus Amiantis Cpr., 1863. 
21:0700 Amiantis callosa Conr. 118. 764. 
633 Amophisphyra subquadrdata Carpenter. 
21:0783 Genus Amphissa H. & A. Adams, 1853. 
629 Amphissa bicolor Dall. 
414 Amphissa corrugata Reeve. 
634 Amphissa undata Carpenter. 
173 Amphissa versicolor Dall 
43i Amphithalamus inclusus Carpenter. 
3100 Amphithalamus tenuis 
1616 Genus Anadenus 
1617 Amnadenus cockerelli H. Hemphill. 
1148 Anodonta nuttalliana Lea. 
1534 Andodonta Oregonensis Lea. 
21:0791 Anomia lampe Gray. Is A. peruviana. 
21:0792 Anomia macroschisma Desh. Is Pododesma m. 
21:0493 Anomia peruviana Crbigny. (134). 
21:0701 Genus Antigona Schumacher, 1817. 
21:0702 Antigona fordi (Yates). 
264 Aplysia californica Cooper 
319 Arca (Barbatia) gradata Sby 
125 Arca Multicostata 
2612 Arca reticulata Gmel. 
21:0422 Area (Byssoarca) solida Sby. 
21:0170 ARCULARIA Link. 
21:0173 Arcularvia nodulifera Philippi, in Cpr., 1857. 
21:0174 Arcularia tegula Reeve, 1853. 
21:0172 Arcuiaria tiarula Kiener, 1834. 
655 Assiminea californica J. G. Cooper. 
2615 Asthenctherus villosior Cpr. 
21:0796 Astraea inaequalis Mart. 
21:0653 Astraea undosa Wood, 2616. (8). : 
21:0801 Axinia intermedia Cp. in part (non Brod.), is Glycy- 
meris barbarensis. 
21:1376 Avicula sterna Gld. 
214 Barleeia haliotiphila Cpr 
79 Barleeia subtenuis 
21:1377 Baxleeia subtenuis rimata Cpr. 
21:0703 Genus Barnea (Leach) Risso, 1826. 
21:0704 Barnea pacifica Stearns, 1871. 
2576 Bela Grippi 
21:0805 GenusBittium Leach. . 
209 Bittium armillatum Cpr : OR beg a sh EE 
