264 BULLETIN 53, UNITED STATES NATIONAL MUSEUM. 



9866. Exogyra arietina Roemer. Plesiotypes. 



Washita (Lower Cret.). Leon Springs, Texas. 



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

 I §57, p. 153, pi. 7, figs, ic-ie. — White, Fourth Ann. Rept. 

 U. S. Geol. Surv., 1884, p. 303, pi. 56, figs. 3-5. 



30227. Exogyra clarki Shattuck. Cotypes. 



Buda (Lower Cret.). Shoal Creek, Austin, Texas. 



Shattuck, Bull. No. 205, U. S. Geol. Surv., 1903, p. 22, pis. 10,11. 



20254. Exogyra columbella Meek. Cotype. 



Colorado (Cret.). Covero, New Mexico. 



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

 Green Riv., Macomb, 1876, p. 124, pi. 1, fig. 3a. 



See Exogyra costata fluminis. 



20254. Exogyra columbella Meek. Cotype and plesiotypes. 



8654. Colorado (Cret.). Covero, and near Casa Salazan, New 



Mexico. 



Stanton, Bull. No. 106, U. S. Geol. Surv., 1893, p. 63, pi. 8, 

 figs. 2-4. 



See Exogyra costata fluminis. 



1744. Exogyra costata Say. Plesiotypes. 



2213. Cretaceous. New Jersey. 



White, Fourth Ann. Rept. U. S. Geol. Surv., 1884, p. 304, pi. 56, 

 fig. 1; pi. 57, figs. 1, 2. 



9879. Exogyra costata Say. Plesiotypes. 



Cretaceous. Jacun, three miles below Laredo, Texas. 



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



1857, p. 154, pi. 9, figs. 2a, 2b; pi. 10, fig. 1. 

 [Locality erroneous. T. W. Stanton.] 



8654. Exogyra costata fluminis White. Cotypes. 



Colorado (Cret.). East bank Rio Puerco, six miles below 

 Casa Salazan, New Mexico. 



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

 1876, p. 174, pi. 17, figs. 3a-3d. 



= Exogyra columbella. 



9864. Exogyra fimbriata Conrad. Holotype. 



Cretaceous. Western Texas. 



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

 1857, p. 154, pi. 7, figs. 2-2b. 



8022. Exogyra forniculata White. Cotypes. 



Washita (Cret.). Bexar County, Texas. 



White, Proc. U. S. Nat. Mus., II, 1879, p. 293, pi. 4, figs. 3, 4; 

 Fourth Ann. Rept. U. S. Geol. Surv., 1884, p. 305, pi. 52, 

 figs. 1, 2. 



= Gryphaea navia. 



