472 BULLETIN 53, UNITED STATES NATIONAL MUSEUM. 



8855. Ostrea (Alectryonia ) procumbens White. Cotypes. 



Jurassic. Vennilion Hogbacks, Northwestern Colorado. 



White, Fovirth Ann. Rept. I'. vS. Geol. vSurv., 1.SS4, p. 290, ])\. 35, 

 Rgs. 6-7. 



8639. Ostrea prudentia White. Cotypes. 



Colorad(j ( Cret. j. Ka.st of Impracticable Ridge, Utah. 



White, Rept. U. S. Geogr. vSurv. W. of looth Merid., IV, Pt. I, 

 1876, p. 171, pi. 14, figs. 2a-(l; Fourth Ann. Rept. IT. S. Geol. 

 Surv., 1894, p. 299, pi. 40, figs. 5, 6. — Stanton, Bull. No. iu6, 

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



135 13S. Ostrea pulaskensis Harris. Cotypes. 



Midway (Eocene). Pula.ski Count}', Arkan.sas. 



Harris, Ann. Rept. Geol. vSurv. Arkansas, 1894, Pt. II, p. 40, pi. i, 

 figs. 3a-d. 



8077. Ostrea quadriplicata Shumard. Plesiotypes. 



Denison (Cret. ). Deni.son, Texas. 



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

 pi. 5, fig. 6a; Fourth Ann. Rept. V. S. Geol. vSurv., 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. u, figs. 3a, 3b. — White, Fourth Ann. Rept. U. S. 

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



8056. Ostrea (Alectryonia) sannionis White. Cotypes. 



Montana (Cret. ). Vallev of Weber River, near Coalville, 

 Utah. 



White, Eleventh Ann. Rept. U. vS. Geol. vSurv. Terr., 1879, p. 277, 

 pi. 2, figs. 2a-e; Fourth Ann. Re])t. V. S. Geol. ,Sur\-., 1884, 

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



18598. Ostrea sellaeformis Conrad. Plesiotype. 



Eocene. Alabama. 



White, Fourth Ann. Rept. U. S. Geol. Surv., 1884, p. 311, pi. 62, 

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



153874. Ostrea sellaeformis pauciplicata Dall. Cotypes. 



Oligocene. Oak Grove, Santa Ro.sa County, Florida. 



Dall, Trans. Wagner Free Inst. Sci. Phila., Ill, Pt. IV, 1898,]). 67S. 



129775. Ostrea sellseformis perplicata Dall. Cotypes. 



Ivocene. Catons Bluff, Conecuh River, Alabama. 



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

 p. 678. 



1 14573. Ostrea sellaeformis rugifera Dall. Cotypes. 



i53'^75- Oligocene. Alum Bluff, Calhoun County, and Tam])a, 



Florida. 



Dall, Trans. Wagner Free In.st. vSci. Phila., Ill, Pt. IV, J898, 

 p. 678. 



