472 BULLETIN 53, UNITED STATES NATIONAL MUSEUM. 



8855. Ostrea (Alectryonia) procumbens White. Cotypes. 



Jurassic. Vermilion Hogbacks, Northwestern Colorado. 



White, Fourth Ann. Rept. U. S. Geol. Surv., 1884, p. 290, pi. 35, 

 figs. 6-7. 



8639. Ostrea prudentia White. Cotypes. 



Colorado (Cret. )■ East of Impracticable Ridge, Utah. 



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

 1876, p. 171, pi. 14, figs. 2a-d; Fourth Ann. Rept. U. S. Geol. 

 Surv., 1894, p. 299, pi. 40, figs. 5, 6. — Stanton, Bull. No. 106, 

 U. S. Geol. Surv., 1893, p. 54, pi. 50, figs. 3, 4. 



135 138. Ostrea pulaskensis Harris. Cotj^pes. 



Midway (Eocene). Pulaski Count}^, Arkansas. 



Harris, Ann. Rept. Geol. Surv. Arkansas, 1894, Pt. II, p. 40, pi. 1, 

 figs. 3a-d. 



8077. Ostrea quadriplicata Shumard. Plesiotypes. 



Denison (Cret.). Denison, Texas. 



White, Eleventh Ann. Rept. U. S. Geol. Surv. Terr., 1879, 275, 

 pi. 5, fig. 6a; Fourth Ann. Rept. U. S. Geol. Surv., 1884, 

 p. 299, pi. 43, fig. 5. 



9885. Ostrea robusta Conrad. Cotypes. 



Cretaceous or Eocene ? Jacun, three miles below Earedo, 

 Texas. 



Conrad, Rept. U. S. Mexican Bound. Surv., Emory, I, Pt. II, 1857, 

 p. 156, pi. 11, figs. 3a, 3b. — White, Fourth Ann. Rept. U. S. 

 Geol. Surv., 1884, p. 300, pi. 40, figs. 3, 4. 



S056. Ostrea (Alectryonia ) sannionis White. Cotypes. 



Montana (Cret.). Valle3^ of Weber River, near Coalville, 

 Utah. 



White, Eleventh Ann. Rept. U. S. Geol. Surv. Terr., 1S79, p. 277, 

 pi. 2, figs. 2a-e; Fourth Ann. Rept. U. S. Geol. Surv., 1884, 

 p. 300, pi. 45, figs. 3-7. 



18598. Ostrea sellaeformis Conrad. Plesiotype. 



Eocene. Alabama. 



White, Fourth Ann. Rept. U. S. Geol. Surv., 1S84, p. 311, pi. 62, 

 figs. 1, 2; pi. 63, fig. 1. 



153874. Ostrea sellaeformis pauciplicata Dall. Cotypes. 



Oligocene. Oak Grove, Santa Rosa County, Florida. 



Dall, Trans. Wagner Free Inst. Sci. Phila., Ill, Pt. IV, 1898, p. 678. 



129775. Ostrea sellaeformis perplicata Dall. Cotypes. 



Eocene. Catons Bluff, Conecuh River, Alabama. 



Dall, Trans. Wagner Free Inst. Sci. Phila., Ill, Pt. IV, 1898, 

 p. 678. 



1 14573. Ostrea sellaeformis rugifera Dall. Cotypes. 



T 53 8 75- Oligocene. Alum Bluff, Calhoun County, and Tampa, 



Florida. 



Dall, Trans. Wagner Free Inst. Sci. Phila., Ill, Pt. IV, 1898, 

 p. 678. 



