21 
1814 Holospira Mearnsii Dall. 
2258 Holospira mesolia 
2207 MHolospira oaxacana 
1667 Holopira pasonis 
1819 Holospira pilsbryi Dall. 
2209 Holospira regis 
1817 Holospira Roemeri 
2211  MHolospira tantalus 
2508 Hopkinsia 
2509 Hopkinsia rosacea 
6 Hyalina arborea 
1199 Hyalina binneyanum Morse. 
10 Hyalina exigua 
12 Hyalina fulva 
7 Hyalina indentata 
8S MHyalina lineata 
1198 MHyalina milium Morse. 
9 MHyalina minuscula 
18 Hyalina multidentata 
1197 MHyalina radiatula Alder. 
11 MHyalina viridula 
839 MHydrobia californica Tryon. 
194 fanthina bifida Totten 
2710 Ianthina communis 
2711 #Ianthina exigua Lam. 
2709 Ianthina globosa Swainson. 
2560 Ilyanassa obsoleta 
206 Isapis fenestrata Cpr 
430 Isapis obtusa Carpenter. 
2353 Ischnochiton acrior 
2442 Ischnochiton biarcuatus 
2355 Ischnochiton clathratus 
2356 Ischnochiton conspicuus 
1548 Ischnochiton cooperi Cpr. 
2354 Ischnochiton didymus Bartsch. 
1275 Ischnochiton interstinctus Gould. 
2892 iIschnochiton magdalenensis Hinds. 
2758 Ischnochiton magdalensis Hds. 
2759 Ischnochiton Mertensii Midd. 
2890 Ischnochiton mertensii Midd. 
2443 Ischnochiton punctulatissimus Cpr. 
840 Ischnochiton radians Carpenter. 
2406 Ischnochiton raymondi Pilsbry. 
2889 Ischnochiton regularis Cpr. 
2757 Ischnochiton regularis Cpr. 
1276 Ischnochiton reteporosus Carpenter. 
1445 Ischnochiton sarcosus Dall. 
1702 Ischnochiton scabricostata Cpr. 
1702 Ischnechiton scabricostat Cpr. 
1444 Ischnochiton Stearnsii Dall. 
2891 Ischnochiton sinudentatus Cpr. 
1277 Ischnoradsia mertensii Middendorf. 
1278 Ischnoradsia trifida Carpenter. 
385 Janira dentata Sowerby 
213 Jeffreysia translucens Cpr 
841 Katherina tunicata Wood. 
315 Kellia laperousii Desh. 
842 Kellia rotundata Carpenter. 
459 Kellia suborbicularis Montagu. 
843 Kennerlia bicarinata Carpenter. 
