G96 BULLETIN 53, UNITED STATES NATIONAL MUSEUM. 



S6oi. Viripara trochiformis (Meek and Harden). Plesiotypes. 



Eocene. Exact locality unknown. 



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

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



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



Laramie (Cret. ). Yellowstone RiveT, Montana. 



White, Third Ann. Rept. U. S. Geol. Surv., 1S83, p. 467, pi. 24, 

 figs. 10-16; Bull. No. 34, U. S. Geol. Surv., 1S86, p. 31, ])1. i, 

 fig.s. 2, 3. 



20079. Vivipara trochiformis (Meek and Hayden ). Plesiotype.s. 



Eocene. Wales, Utah. 



White, Bull. No. 34, U. S. Geol. Surv., 1886, p. 31, pi. i, fig.s. 4, 5. 



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

 Eocene. Last Bluff, Utah. 



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

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



8295. Vivipara wyomingensis Meek. Plesiotype. 



Eocene. Chtirch Buttes, Wyoming. 



White, Third Auu. Rept. U. S. Geol. Surv., 1S83, p. 468, pi. 30, 

 figs. 13, 14. 



\'iviparus. See Vivipara. 



1 1 1620. Vola humphreysi (Coniad). Plesiotype. 



Miocene. Near Shiloh, New Jersey. 



Whitfield, Mon. XXIV, U. S. Geol. vSurv., 1894, p. 32, pi. 4, 

 figs. 6-9. 



486. Volsella attenuata (Meek and Haj^den). Holotype and 



parat5'pe. 

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



Meek, Rept. U. S. Geol. Surv. Terr., IX, 1876, p. 74, ])1. 28, 

 figs. 8a-8b. 



= Modiola attenuata. 



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



Jura.ssic. Big Horn Motuitains, Wyoming. 



Meek and Hayden, Pal. I'pper Mo., vSmithsonian Cont. to Knowl. 

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



= Modiola formosa. 



446. Volsella galpiniana (Evans and Shumard). Plesiotypes. 



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



Meek, Rept. I^. S. Geol. Surv. Terr.', IX, 1876, p. 73, pi. 28, figs. 

 7a, 7I). 



= Modiola galpiniana. 



812 1. Volsella (Brachydontes) laticostata White. Holotype. 



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



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

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

 1883, p. 423, pi. 13, fig. 2. 



= Modiola laticostata. 



