474 BULLETIN 53, UNITED STATES NATIONAL MUSEUM. 



8386. Ostrea subtrigonalis Evans and Shumard. Plesiotypes. 



Laramie (Cret.). Upper Missouri River. 



White, Third Ann. Rept. U. S. Geol. Surv., 1883, p. 421, pi. 12, 

 figs. 2-5; Fourth Ann. Rept. U. S. Geol. Surv., 1884, p. 308, 

 pi. 61, figs. 4-7. 



2172. Ostrea subtrigonalis Evans and Shumard? Plesiotypes. 



Earamie (Cret.). Mouth of Judith River, Montana. 



Meek, Rept. U. S. Geol. Surv. Terr., IX, 1S76, p. 510, pi. 40, 

 figs. la-d. 



18613. Ostrea tecticostata Gabb. Plesiotypes. 



Cretaceous. Eufaula?, Alabama. 



White, Fourth Ann. Rept. U. S. Geol. Surv., 18S4, p. 301, pi. 1, 

 figs. 3, 4. 



570. Ostrea thirsae Gabb. Plesiotype. 



Eocene. Eufaula, Alabama. 



White, Fourth Ann. Rept. U. S. Geol. Surv., 1SS4, p. 311, pi. 63, 

 figs. 4-6. 



330. Ostrea translucida Meek and Hayden. Holotype. 



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



Meek and Hayden, Proc. Acad. Nat. Sci. Phila., for 1857, p. 147. 

 See Ostrea pellucida. 



20262. Ostrea (Gryphsea) uniformis Meek. Holotype. 



Colorado (Cret.). Pagosa Springs, Colorado. 



Meek, Rept. Expl. Exped. Santa Fe to junction of Grand and 

 Green Rivers, Macomb, 1S76, p. 124, pi. i, figs. 2a-c. 



20262. Ostrea uniformis (Meek). Holotype. 



Colorado (Cret.). Pagosa Springs, Colorado. 



Stanton, Bull. No. 106, U. S. Geol. Surv., 1893, p. 59, pi. 3, figs. 



3. 4- 



9902. Ostrea veleniana Conrad. Holotype. 



Tertiarj r . Rancho Helena, below Salado, Texas. 



Conrad, Rept. U. S. Mexican Bound. Surv., Emory, I, Pt. II, 

 1S57, p. 160, pi. 17, figs. 2a, 2b. — White, Fourth Ann. Rept. 

 U. S. Geol. Surv., 18S4, p. 314, pi. 70, fig. 1 (as O. veberiana). 



9833. Ostrea vellicata Conrad. Holotype. 



Washita? (Eower Cret.). Rio Grande between El Paso 

 and Frontera. 



Conrad, Rept. U. S. Mexican Bound. Surv., Emory, I, Pt. II, 

 1857, p. 156, pi. 11, figs. 2a, 2b. 



20252. Ostrea vesicularis Eamarck. Plesiot} r pe. 



Cretaceous. Hempstead Count}', Arkansas. 



Owen, Second Rept. Geol. Reconn. of Arkansas, i860, pi. 8, fig. 6. 



