* 
115 ios 
264 Aplysia californica Cooper 
21:0494 Arca gigantea Brod. 
319 Arca (Barbatia) gradata Sby 
2313 Arca grandis B. & S. 
125 Arca Multicostata Mi TN aa TSE 
2613 Arca mutabilis Sby. 
--21:0495 Arca pacifica Sby. 
2612 Arca reticulata Gmel. 
21:0496 Arca reeveana Hanley. 
21:0422 Arca (Byssoarca) solida Sby. 
21:0421 Arca (Scapharca) tuberculosa Sby. 
21:0497 Arca vespertilio Cpr. 
(21:232) Arcisa Nyst, 1873. 
(21:213) Arctoscala Dall, 1909. 
21:0170 ARCULARIA Link. 
21:0176 Arcularia complanata Powys, 1835. Panama; Valpariso. 
21:0175 Arcularia crebristriata  Cpr., 1857. Mazatlan; Salina 
Cruz. 
21:0178 Arcularia iodes Dall. Gulf of Cal. 
21:0171 Arcularia luteostoma Brod. & Sby., 1829. Gulf Cal.; 
Chile. 
21:0177 Arcularia major Stearns, 1984. 
21:0173 Arcularia nodulifera Philippi, in Cpr., 1857. 
21:0180 Arcularia exilis Powys, 1835. Panama; Chile. 
21:0179 Arcularia scabriuscula Powys, 1835. Central America. 
21:0637 Arcularia tegula Reeve. (65). 
21:0172 Arcularia tiarula Kiener, 1834, 
409 Argonauta argo Linne. 
1364 Argonauta expansa 
648 Argonauta hians Solander. 
649 Argonauta pacifica Dall. 
2070 Argobuccinum oregonense 
21:0793 Arca labiata Sby. 
2614 Archidoris Montereyensis (See 266). 
650 Ariolimax andersoni W. G. Binney. 
651 Ariolimax californicus J. G. Cooper. 
1524 Agriolimax campestris hyperboreus 
652 Ariolimax columbianus Gould. 
1527 Ariolimax Columbianus Gould. ‘ 
1528 Forma maculatus Cockerell. 
1529 Forma niger Cockerell. 
1520 Ariolimax columbianus stramineéa 
653 Ariolimax hemphilli W. G. Binney. 
654 Ariolimax hecoxi Wetherby. 
21:0794 Ariolimax niger. 
2021 = Ariolimax stecindachneri 
§879 Arion hortensis 
3269 Arionta facta 
3268 Arionta rowellii 
21:0795 Artemis ponderosa Gray. Is Dosinia p. 
- 3961 Genus Ashmunella Pilsbry. 
2919 Ashmunella altissima 
2596 Ashmunella angulata 
1362 Ashmunella ashmuni 
2976. Ashmunella Ashmuni robusta 
2593 Ashmunella Chiricahuana 
2598 Ashmunella duplicidens TMA EAS oe a" a 
