696 BULLETIN 53, UNITED STATES NATIONAL MUSEUM. 



8601. Viripara trochiformis (Meek and Hayden). Plesiotypes. 



Eocene. Exact locality unknown. 



White, Rept. U. S. Geogr. Surv. W. 100th Merid., IV, Pt. I, 1S76, 

 p. 214, pi. 21, figs. 4a-c. 



8144. Vivipara trochiformis (Meek and Hayden). Plesiotype. 



Laramie (Cret. ). Yellowstone River, Montana. 



White, Third Ann. Rept. U. S. Geol. Surv., 1883, p. 467, pi. 24, 

 figs. 10-16; Bull. No. 34, U. S. Geol. Surv., 1886, p. 31, pi. 1, 

 figs. 2, 3. 



20079. Vivipara trochiformis (Meek and Hayden). Plesiotypes. 



Eocene. Wales, Utah. 



White, Bull. No. 34, U. S. Geol. Surv., 1S86, p. 31, pi. 1, figs. 4, 5. 



8598. Vivipara trochiformis (Meek and Hayden), var. Plesiotypes. 

 Eocene. East Bluff, Utah. * 



White, Rept. U. S. Geogr. Surv. W. 100th Merid., IV, Pt. I, 1876, 

 p. 215, pi. 21, figs. 5a, b. 



8295. Vivipara wyomingensis Meek. Plesiotype. 



Eocene. Church Buttes, Wyoming. 



White, Third Ann. Rept. U. S. Geol. Surv., 1883, p. 468, pi. 30, 

 figs. 13, 14. 



Viviparus. See Vivipara. 



111620. Vola humphreysi (Coniad). Plesiotype. 



Miocene. Near Shiloh, New Jersey. 



Whitfield, Mon. XXIV, U. S. Geol. Stirv., 1S94, p. 32, pi. 4, 

 figs. 6-9. 



486. Volsella attenuata (Meek and Hayden). Holotype and 



parat} 7 pe. 

 Fox Hills (Cret.). Moreau River, South Dakota. 



Meek, Rept. U. S. Geol. Surv. Terr., IX, 1876, p. 74, pi. 28, 

 figs. 8a-8b. 



= Modiola attenuata. 



1882. Volsella formosa (Meek and Hayden). Cotypes. 



Jurassic. Big Horn Mountains, Wyoming. 



Meek and Havden, Pal. Upper Mo., Smithsonian Cont. to Knowl. 

 No. 172, XIV, 1864, p. 86, text figs. A, B, on p. 87. 



= Modiola formosa. 



446. Volsella galpiniana (Evans and Shumard). Plesiotj^pes. 



Fox Hills (Cret.). Eong Lake, Fox Hills, North Dakota. 



Meek, Rept. U. S. Geol. Surv. Terr., IX, 1876, p. 73, pi. 28, figs. 

 7a, 7b. 



= Modiola galpiniana. 



8121. Volsella ( Brachydontes) laticostata White. Holot) 7 pe. 



Laramie (Cret.). Danforth Hills, northwestern Colorado. 



White, Twelfth Ann. Rept. U. S. Geol. Surv. Terr., Pt. I, 1883, 

 p. 59, pi. 25, fig. 4a; Third Ann. Rept. U. S. Geol. Surv., 

 18S3, p. 423, pi. 13, fig. 2. 



= Modiola laticostata. 



