684 BULLETIN 53, UNITED STATES NATIONAL MUSEUM. 



12474. Unio primaevus White. Cotypes. 



Laramie (Cret.). South of Cow Island, Missouri River, 

 Montana. 



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

 p. 70, pi. 29, fig. 3b; Third Ann. Rept. U. S. Geol. Surv., 

 1883, p. 432, pi. 14, figs. 4, 5. 



2162. Unio priscus Meek and Hayden. Holotype and paratypes. 



2180. Laramie (Cret.). Forty miles above mouth of Yellow- 



stone River, and Judith River, above Bad Lands, 

 Montana. 



Meek and Hayden, Proc. Acad. Nat. Sci. Phila., VIII, 1856, p. 

 117.— Meek, Rept. U. S. Geol. Surv. Terr., IX, 1876, p. 516, 

 pi. 43, figs. Sa-e.— White, Third Ann. Rept. U. S. Geol. Surv., 

 1883, p. 432, pi. 14, fig. 1. 



9036. Unio proavitus White. Cotypes. 



Laramie (Cret.). Black Buttes Station, Wyoming. 



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

 p. 65, pi. 22, figs. 3a-d; Third Ann. Rept. U. S. Geol. Surv., 

 1883, p. 433, pi. 13, figs. 3-6. 



9052. Unio propheticus White. Holotype. 



Laramie (Cret.). Black Buttes Station, Wyoming. 



White, Twelfth Ann. Rept. U. S. Geol. Surv. Terr., Pt. I, 1S83, 

 p. 65, pi. 22, fig. 5a; Third Ann. Rept. U. S. Geol. Surv., 1883, 

 P- 433, pl- 15, ng. 3. 



20061. Unio rectoides White. Cotypes. 



20062. Eocene. Wales, Utah, and near Nacimiento, New Mexico. 



White, Bull. No. 34, U. S. Geol. Surv., 1886, p. 21, pi. 4, fig. 1; 

 pi. 5, figs. 1, 2. 



8 141. Unio senectus White. Cotypes. 



12478. Laramie (Cret.). Dog Creek, Montana. 



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

 p. 69, pi. 28, figs, ia-c; Third Ann. Rept. U. S. Geol. Surv., 

 1883, p. 432, pi. 19, figs. 1, 2. 



8098. Unio shoshonensis White. Cotypes. 



8099. Eocene. White River Valley, northwestern Colorado, 



and southern Wyoming. 



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

 p. 41, pi. 19, figs. 2, 2b; Third Ann. Rept. U. S. Geol. Surv., 

 1883, p. 435, pi. 2S, fig. 3. 



8849. Unio stewardi White. Cotypes. 



Jurassic. Flaming Gorge, Northern Utah. 



White, Third Ann. Rept. U. S. Geol. Surv., 18S3, p. 426, pi. 3, 

 fig- I- 



20053. Unio stewardi White. Plesiot)'pes. 



Jurassic. Eight miles north of Canyon City, Colorado. 

 White, Bull. No. 29, U. S. Geol. Surv., 1886, p. 19.pl. 3, figs, 1,2. 



