114 de Qin ee oes ees 
21:0783 Amycla chrysalloidea Cpr. Is Columbella c. 
21:0784 Amycla gausapata Gld. Is Columbella g. ‘ 
21:0785 Amycla tuberosa Cpr. Is Columbella t. 
636 Anachis coronata Sowerby. 
2283 Anachis sulcosa Sby. 
467 Anachis penicillata Carpenter, 
637 Anachis. subturrita Carpenter. 
1616 Genus Anadenus 
1617 Anadenus cockerelli H. Hemphill. 
1427 Anaplocamus borealis Dall. 
21:0734 Genus Ancula Loven, 1846. 
2507 Ancula Pacifica 
2609 Ancylus (Lanx) altus 
2610 Ancylus Newberryi 
638 Ancylus caurinus W. Cooper. 
639 Ancylus crassus Hald. 
640 Ancylus fragilis Tryon. 
641 Ancylus kootaniensis Baird. 
1948 Ancylus oregonensis Clessin. 
44 Ancylus parallelus 
642 Ancylus patelloides Lea, 
1659 Ancylus rivularis Say. 
2434 Angulus Carpenteri Dall. 
Synonymy:—Angulus variegatus Cpr. (not Gmel.). 
1174 Angulus gouldii Carpenter. 
21:0786 Angulus modestus of Cal. lists, is Tellina buttoni. 
1172 Angulus obtusus Carpenter. 
1535 Angulus salmonea Cpr. 
1173 Angulus variegatus Carpenter. 
21:0732 Genus Anisodonta Deshayes, 1860. 
21:0110 Anisodonta? pellucida Dall. Monterey bay, Cal. 
2611 . Anisodoris nobilis 
643 Anodonta angulata Lea. 
21:0787 Anodonta beringiana Midd, 
3169 Anodonta Californiensis 
21:0788 Anodonta cygnea L. 
21:0789 Anodonta impura Say: Is A. cygnea yar. 
644 Anodonta kennerleyi Lea. 
1149 Variety Californiensis Lea. See Cooper, Zoe 3:23. 
1150 Variety Idahoensis Henry Hemphill. 
1148 Anodonta nuttalliana Lea. 
3188 Anodonta nuttalliana wahlamatensis . 
1534 Andodonta Oregonensis Lea. 
1660 Anodonta ovata Lea. 
1661 Anodonta plana Lea. 
55 Anodonta undulata 
21:0790 Anodonta wahlametensis. Is A. cygnea var. 
21:0666 Anomalocardia rugosa Sby. 
21:0458 Anomalocardia subimbricata Sby. 645. 2321. 
647 Anomalocardia subrugosa Sowerby. 
21:0791 Anomia lampe Gray. Is A. peruviana. 
21:0792 Anomia macroschisma Desh. Is Pododesma m. 
21:0493 Anomia peruviana Orbigny. (134). 
21:0701 Genus Antigona Schumacher, 1817. 
21:0702 Antigona fordi (Yates). 
2900 Genus Aphallarion Pilsbry and Vanatta. 
1884 Aphallarion Buttoni Pils. & Van. 
2130 Aplexa hvypnorum 
