530 BULLETIN 53, UNITED STATES NATIONAL MUSEUM. 



1 12534. Potamides (Pyrazisinus ) acutus Dall. Holotype. 



Oligocene. Hillsboro River, above Tampa, Florida. 



Dall, Trans. Wagner Free Inst. Sci. Phila., Ill, Pt. II, 1892, p. 

 289, pi. 22, fig. 19. 



1 12533. Potamides (Pyrazisinus) cornutus Heilprin. Plesiotypes. 

 Oligocene. Tampa, Florida. 



Dall, Trans. Wagner Free Inst. Sci. Phila., Ill, Pt. II, 1892, p. 

 2S8, pi. 15, fig. 3. 



1 13370. Potamides hillsboroensis Heilprin. Plesiotypes. 



Oligocene. Tampa, Florida. 



Dall, Trans. Wagner Free Inst. Sci. Phila., Ill, Pt. II, 1892, p. 

 286, pi. 15, fig. 12. 



113377. Potamides (Pyrazisinus) scalatus (Heilprin). Plesiotypes. 

 Pliocene. Caloosahatchie River, near Fort Thompson, 

 Florida. 



Dall, Trans. Wagner Free Inst. Sci. Phila., Ill, Pt. II, 1892, p. 

 289, pi. 15, figs. 1, 7, 8, 10b. 



See Cerithidea scalata. 



1 13375. Potamides (Pyrazisinus) scalatus ecarinatus Dall. 



Holotype. 

 Pliocene. Caloosahatchie River, near Fort Thompson, 

 Florida. 



Dall, Trans. Wagner Free Inst. Sci. Phila., Ill, Pt. II, 1892, p. 

 289, pi. 15, fig. 4. 



1 12525. Potamides (Lampanella) transecta Dall. Holotype. 



Oligocene. Ballast Point, Tampa, Florida. 



Dall, Trans. Wagner Free Inst. Sci. Phila., Ill, Pt. I, 1890, p. 189, 

 pi. 11, fig. 7; Pt. II, 1S92, p. 2S7. 



13393. Potamis pullatus Gould. Holotype. 



Post Tertiary. San Diego, California. 



Gould, Rept. Expl. and Surv. R. R. Miss, to Pacific Ocean, V. 

 1S56, p. 333, pi. 11, fig. 23. 



Poteriocrinites. See Poteriocrinus. 



8066. Poteriocrinus montanaensis Meek. Holotype. 



Lower Carboniferous. Old Bald}", near Virginia City, 

 Montana. 



Meek, Sixth Ann. Rept. U. S. Geol. Surv. Terr., 1S73; p. 469, and 

 footnote as Poteriocrinites montanensis. — White, Twelfth 

 Ann. Rept. U. S. Geol. Surv. Terr., Pt. I, 1883, p. 128, pi. 33, 

 fig. 6a. 



= Poteriocrinus ( Scaphiocrinus) montanaensis. 



39937. Poteriocrinus municipalis Troost. Chirotype. 



Mississippian. Lawrence County, Tennessee. 

 Troost, Proc. Amer. Assoc. Adv. Sci., II, 1850, p. 61. 



