73 



MOU.USCA OF THE GUI^F OF MKXICO 



41 



hyafsna Conrad, J. N. S. Phila.,6, p. 261, pi. 11, f. 12, (as Mya); 

 Tr^on, Amer. Mar. Conch., p. 51, pi. n, f. 2, 1874 ; Dall, 

 Bull. 37, p. 64, pi. 59, f. 11, '89. 

 Osteodesma hyalina De Kay, Nat. Hist. N. Y., 5, p. 234, pi. 

 33, f. 311 a, b, 1843. 

 Distribution.— Nova Scotia to Texas, 0-30 fms. Miocene to 

 Recent. 



(AHograinma) formosa Jeffreys. Dredged in Gulf of Campeche and 



North Atlantic, 200-600 fms, 

 (Phiiippini) beaui d'Orbigny, Moll. Cubana, 2, p. 225, pi. 25, f- 

 26-28, 1845, (as beana, typographical error). 

 bcauii Aran go, Fauna Mai. Cuba, p. 240, 1878. 

 be, an a Dall, Bull. 37, p. 64, '89 ; Dall and Simpson, B. U. S. 



Fish Comm., 1, p. 498, '01. 

 braziliensis Gould, 1850, and orbignyi Fischer, 1857. 

 Distribution. — Hatteras to Brazil, 0-30 fms. West Fla. Type 

 collected by M. Beau in the Antilles. 



Genus VERTICORDIA Wood 



acuticostata Philippi, Moll. Sicil., 2, p. 42, T. 14, f. 19, 1844, 



(as Hippagus); Seguenza, Jour, de Conchy., 8, p. 291, 



pi. 10, f. la-e, i860; Dall, B. M. C. Z., 9, p. 105, '81 ; 



Bull. 37, p. 66, '89. 

 Distribution. — North Atlantic to Barbados, 71-600 fms. Gulf, 



abyssal, temperature 49° F. Very large shells. Type 



from upper Tertiary of Calabria, 

 seguenzae Dall, B. M. C. Z., Harvard Coll., 12, p. 190, 1886; 



Bull. 37, p. 66, 1889. 

 Distribution. — Hatteras to Yucatan, 124-640 fms. Gulf of 



Mexico, Yucatan Strait, 

 woodi Smith, Challenger Rept. Lam., p. 168, pi, 25, f. 7, 7 b, 



1885 ; Dall, B. M. C. Z., 12, p. 288, '86 ; Bull. 37, p. 66, 



1889. 



Distribution. — Gulf of Mexico to Brazil, 100-1060 fms. Texas 

 region. 



