632 BULLETIN 53, UNITED STATES NATIONAL MUSEUM. 



1 12227. Strombus chipolana Dall. Cotypes. 



Oligocene. Near Baileys Ferry, Chipola River, Florida. 



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

 176, pi. 4, fig. 1; Pt. II, 1892, p. 263, pi. 13, figs. 1, 3 (as 

 S. chipolanus). 



25675. Stropheodonta beckii Hall. Plesiotype. 



Helderbergian (Lower Dev. ). Cape Leidy, Arctic America. 

 Meek, Amer. Journ. Sci. (2), XL, 1865, p. 33. 



13797. Stropheodonta calvini Miller. Plesiotype. 



Middle Devonian. Eureka District, Nevada. 



Walcott, Mon. VIII, U. S. Geol. Surv., 1884, p. 122, pi. 13, fig. 6. 



14010. Stropheodonta canace Hall and Whitfield. Plesiotype. 



Upper Devonian. Treasure Hill, White Pine District, 

 Nevada. 



Hall and Whitfield, Rept. U. S. Geol. Expl. 40th Par., IV, Pt. II, 

 1877, p. 246, pi. 3, figs. 1-3. 



13799. Stropheodonta demissa (Conrad). Plesiotype. 



Middle Devonian. Eureka District, Nevada. 



Walcott, Mon. VIII, U. S. Geol. Surv., 1884, p. 118, pi. 2, figs. 

 9- 9 b. 



See Stropheodonta dimosa and Strophomena (Stropho- 

 donta) subdemissa. 



1 791 7. Stropheodonta dimosa (Conrad). Plesiotype. 



Middle Devonian. Near New Buffalo, Iowa. 



Owen, Rept. Geol. Surv. Wis., Iowa, and Minn., 1852, pi. 3 A, 

 fig. 14. 



= Stropheodonta demissa. 



25676. Stropheodonta headleyana Hall. Plesiotype. 



Helderbergian (Lower Dev. ) . Cape Leidy, Arctic America. 

 Meek, Amer. Journ. Sci. (2), XL, 1865, p. 33. 

 = Strophonella headleyana. 



13804. Stropheodonta inequiradiata (Hall). Plesiotype. 



Middle Devonian. Combs Peak, Nevada. 



Walcott, Mon. VIII, U. S. Geol. Surv., 1884, p. 120, pi. 2, figs. 



11, 11a. 



17916. Stropheodonta iowensis (Owen). Plesiotype. 



Middle Devonian. North of Iowa City, Iowa. 



Owen, Rept. Geol. Surv. Wis., Iowa, ^and Minn., 1852, pi. 3 A, 

 fig. 17 (as Chonetes sp. undet.). 



See Chonetes (?) iowensis. 



5082. Stropheodonta magnifica Hall. Plastotype. 



Oriskany (Lower Dev.). Albany County, New York. 



Hall, Nat. Hist. New York, Pal. Ill, 1859, p. 414, pi. 94, figs. 

 2C, 2d. 



