190° 
‘low tinted, spire bending forward and toward the right, the out- 
line nearly straight on the right side, convex on the left, front 
outline nearly straight, rear outline convex. Apex decollated, 
‘small. Suture impressed, slightly ascending toward the operture. 
About 9% whorls remaining, of which each of the last 3 has an 
impressed varix, thickened behind, on the right side. Whorls of 
‘spire convex, the body whorl rather cylindrical and much bent to 
the right and forward, giving the penultimate whorl a swollen 
appearance. Aperture irregularly oval, outer lip sharp, thickened, 
‘bow shaped in profile, columella and parietal walls forming a 
concave arch, parietal callus nearly straight, thin. Alt. 5.9, diam. 
2.16, length of aperture 1.9, breadth of aperture 1.2 mm.’’— 
Vanatta, l. c. 
Type locality: Monterey, Cal., on a starfish. 
‘2922 Eulima Randolphi 
Vanatta, 1. c. 256. Unalaska (P. B. Randolph). 
2923 Vertigo Gouldii lagganensis 
Pilsbry, l. ec. 1899:314, Beeeen. Alberta (Taylor). 
2924 Vertigo Andrusiana 
Pilsbry, l. c. 315, Douglas Co., Oregon (F. H. Andrus). 
2925 Pilsbry, H. A. 
Note on the anatomy of the helicoid genus Ashmunella, a 
1900:107. 
Lower Californian species of Coeelocentrum and Berendti, Loe 
550. 
Sonorella, a new genus of helices, 1. c. 556. S: hachitana type. 
—and Edward G. Vanatia: A partial revision of the Pupidze 
-of the U. S. l. c. 582. 
2926 Bifidaria procera cristata 
“Angle and parietal lame!ile more completely united than in B. 
procera, hardly bifid; crest behind the outer lip very strong. 
Length 2.8, diam. 1.2 mm.’’—Pilsbry & Vanatta. 
Type locality:—Camp Verde, Arizona (Ashmun). 
2927 +#4Bifidaria riograndensis Sterki, ined. 
Hidalgo, Texas—see P.& V.l.c. © 
2928 Vertigo concinnula Cockerell. 
Colorado and New Mexico. 
2929 Vertigo modesta 
Alaska.—Laggan, Alberta (Taylor).—Labrador. 
2930 Variety Parietalis Ancey. Utah. 
2931 Variety Corpulenta Morse. 
Type locality:—Little Valley, Washoe Co., Nevada.—Utah. 
2932 Variety Castanea Sterki. 
Fish Camp, Fresno Co., Cak (Hemphill).—Lake Co., Cal. 
(Sterki). 
2933 Vertigo Columbiana Sterki. 
Vancouver Island (Taylor)—Wash.—Oregon. 
2934 Variety Utahensis Sterki. 
“Smaller, length 1.8, diam. 1 mm., and quite distinctly stri- 
ate. Aperture about as in columbiana, but a little shorter. Box 
Elder Canyon, Utah (Hemphill). All the above described by P. 
& V. 1. ¢. 
2935 Vertigo coloradoensis basidens. Bland, N. M. (Ashmun). 
2936 Variety Arizonensis 
Type locality:—Top of Mt. Mingus, near Jerome, Arizona, 
about 8,500 feet elev. (Ashmun). 
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