37 MoivLUSCA OF THE Gui.P OF MEXICO 



Distribution and range. — Typical from North Carolina to Flor- 

 ida, 2- 1 GO fathoms; varietj', truticulus Dall, northern, from 

 Long Island to Nova Scotia. IMiocene to Recent. 



Gulf Coast. — Cedar Keys, Florida. 



asgeensis Jeffreys, Proc. Zool. Soc, p. 581, 1879. 



cBgeensis Dall, Bull. Mus. Comp. Zool. Ha'rvard Coll., vol. 



12, p. 246, 1886; Bull. 37, U. S. Nat. Mus., p. 42, 1889. 



Distribution and range. — Southward to Trinidad and in the 



Mediterranean Sea. 5 to 464 fathoms. Recent. 

 Gulf Coast. — --Western Florida in shallow water (Dall). 



crenulata A. Adams, Proc. Zool. Soc, p. 52. i860. 



creiiulata Dall, Bull. Mus. Comp. Zool. Harvard Coll., vol. 9, 

 p. 123, 1881 ; Idem, vol. 12, p. 247, 1886 ; Bull. 37, U. S. 

 Nat. Mus., p. 42, pi. 7, fig. 2, 1889. 

 cu/edrensis Smith. Challenger Rept. Lamell., p. 228, pi. 18, 

 figs. II, II a, 1885. 

 Distribution. — Hatteras to Barbados, 30 to 382 fathoms. 

 Gulf Coast. — Western Florida, 20 miles offshore (DallJ. 

 cymella Dall, Bull. Mus. Comp. Zool., vol. 12, p. 247, 1886. 

 cymella Dall, Bull. 37, U. S. Nat. Mus., p. 42. 1889. 

 Distribution. — Florida Straits to Yucatan. In deep water, 205 

 to 1 100 fathoms. Yucatan Strait, dredged in 540 fms. 

 (Dall). 



verrilli Dall 



trigonaN^rriSS., Trans. Conn. Acad., vol. 6, p. 438, 1885. 

 verrilli Dall, Bull. Comp. Zool. Harvard Coll., vol. 12, p. 

 248, 1886; Bull. 37, U. S. Nat. Mus., p. 42, 1889. 

 Distribution. — Rhode Island to Yucatan. Recent. Abyssal, 

 430 to 1605 fms. Gulf of Mexico. Texas region (Dall). 



chipolana Dall, Trans. Wagner Inst. Sci., vol. 3, pt. 4, p. 575, pi. 

 32, fig. 10, 1898. 

 chipolana Aldrich, Manuscript Ala. well fossils. 

 Distribution. — Miocene of the Chipola River marls and lower 

 Alum Bluff bed, Florida ; Bascom No. i well, Mobile, Ala- 



