202 BULLETIN 53, UNITED STATES NATIONAL MUSEUM. 



7822. Cyrena inflexa (Meek). Cotypes. 



Colorado (Cret.). Below Gallatin City, Missouri River, 

 Montana. 



White, Eleventh Ann. Rept. U. S. Geol. Surv. Terr., 1877 (1879), 

 p. 290, pi. 10, figs. 7a, 7b. — Stanton, Bull. No. 106, U. S. Geol. 

 Surv., 1893, p. 103, pi. 22, fig. 13. 



See Corbicula (Veloritina) inflexa. 



2 131. Cyrena intermedea Meek and Hayden. Holotype. 



Laramie (Cret.). Moreau River, South Dakota. 



Meek and Hayden, Proc. Acad. Nat. Sei. Phila., VIII, 1856, p. 116. 

 = Corbicula nebrascensis. 



2132. Cyrena moreauensis Meek and Ha3'den. Cotypes. 



L/aramie (Cret.). Moreau River, South Dakota. 



Meek and Hayden, Proc. Acad. Nat. Sci. Phila., VIII, 1856, p. 115. 

 = Corbicula subelliptica moreauensis. 



2134. Cyrena occidentalis Meek and Hayden. 



Holotype and paratype. 

 Daramie (Cret.). Bad Lands of Judith River, Montana. 



Meek and Hayden, Proc. Acad. Nat. Sci. Phila., VIII, 1856, p. 116. 



= Corbicula occidentalis. 



109315. Cyrena pompholyx Dall. Cotypes. 



Oligocene. Ballast Point, Tampa, Florida. 



Dall, Trans. Wagner, Free Inst. Sci. Phila., Ill, Pt. V, 1900, pi. 

 38, figs. 7, 8; Pt. VI, 1903, p. 1445. 



22884. Cyrena ( Veloritina ) securis (Meek). Plesiotypes. 



22885. Colorado (Cret.). Bear River City, and near Hilliard, 

 22S86. Wyoming. 



Stanton, Bull. No. 106, U. S. Geol. Surv., 1893, p. 101, pi. 23, 

 figs. 1-3. 



8073. Cyrena securis (Meek). Plesiotype. 



Cretaceous. Hilliard Station, Wyoming. 



White, Eleventh Ann. Rept. U. S. Geol. Surv. Terr., 1S77 (1879), 

 p. 289, pi. 3, figs. 2a-c. 



157596. Cyrenoida caloosaensis Dall. Holotype. 



Pliocene. Caloosahatchie River, Florida. 



Dall, The Nautilus, X, 1S96, p. 52; Trans. Wagner Free Inst. Sci. 

 Phila., Ill, Pt. VI, 1903, p. 1335, pi. 51, fig. 5. 



5898. Cyrtina billingsi Meek. Holotype. 



Middle Devonian. Clear Water River, Mackenzie River 

 Basin, Canada. 

 Meek, Trans. Chicago Acad. Sci., I, 1868, p. 97, pi. 14, figs. 6a-h. 



