49 



1860 Vitrea indentata 



1676 Vitrea Johnsoni 



2573 Vitrea lucida Drap. Colo. 



1677 Vitrea pugetensis 

 1655 Vitrea radiatula Alder. 



1861 Vitrea subrupicola 



1862 Vitrea subrupicola spelsea 



1678 Vitrea subrupicola 



1679 Variety spelea Dall, Nautilus 9:27. 

 1858 Vitrea Whitneyi 



2568 Vitrina Alaskana Dall. 

 5 Vitrina limpida 



1128 Vitrifina pfeifferi Newcomb. 



596 Vitrinella alaskensis 

 598 V. (Docomphala) berryi 

 595 Vitrinella eshnauri 



594 Vitrinella oldroydi 



597 V. (Docomphala) Stearnsi 

 2214 Vitrinella williamsoni Dall. 



1129 Vivipara japonica Martyn. 



2033 Vivipara malleata Reeve 



166 Volutella pyriformis Cpr 



1130 Volutharpa ampullacea Middendorf. 



1224 Volutoharpa mcerchiana Fisher. See 1223. 



2034 Volutomitra alaskana 



1389 Volutopsius trophonius Dall. 

 1890 Volutopsius kobelti Dall. 



1391 Volutopsius castaneus Mceerch. 



1392 Volutopsius attenuatus Dall. 



1393 Volutopsius regularis Dall. 



167 Volvarina varia Sby 



440 Volvula cylindrica Carpenter. 

 2478 Williamia peltoides Cpr. 

 2706 Williamia vernalis 



1188 Xylophaga dorsalis 



1189 Xylotrya bipinnata 



1131 Xylotrya fimbriata Jeffries. 



1132 Xylotrya pinnatifera Blainville. 

 353 Xylotrya setacea Tyron 



1133 Xylotrya stutchburyi Jeffries. 



1134 Yoldia amygdala Valenciennes. 

 318 Yoldia cooperi Gabb 



1135 Yoldia impressa Conrad. 



1136 Yoldia lanceolata Sowerby. 



1137 Yoldia limatula Say. 



1138 Yoldia sapotilla Gould. 



1477 Yoldia (Scissula) ensifera plena Dall. 



1614 Yoldia Montereyensis 



1156 Yoldia seminuda Dall. 



1139 Yoldia thraciaeformis Storer. 



2951 Genus Zacoleus Pilsbry. 



2952 Zacoleus Idahoensis Pilsbry. 

 1438 Zeidora flabellum Dall. 



99 Zirphaea crispata 



2418 Zirfcea gabbi Tryon. 



1571 Zonites cellarius Mull. 



2884 Zonites selenitoides Pilsbry. 



2743 Zonites Lansingii 



2744 Zonites Stearnsii 



2745 Zonites Shepardi 



