93 MOLLUSCA OF THE GULF OF IMEXICO 6i 



Distribution. — Lat. 38" 29' N., south to Yucatan straits, Gulf 

 of Mexico, 856-1582 fms. Also off France, 820 fms. 

 granulosa (Jeffreys) Monterosato, Jour, de Conch3\, 22, 1874, 

 (as Axinns); Dall, Proc. U. S. N. M., 23, p. 785, 1901. 

 Distribution. — Gulf of Mexico to St. Lucia, W. I., 60-116 fms. 

 Also Mediterranean and off Canaries. 

 pyriformis Dall, Bull. Mus. Comp. Zool., Harvard Coll., 12, p. 

 267. 1886. 

 Cryptodon f obesus Dall, Idem, 9, p. 136, '81. Not obesus of 

 Verrill, Amer. Jour. Sci., 3, p. 287, pi. 7, f. 2, 1872=/^/- 

 sinuata d'Orbigny, 1846. 

 Distribution. — Carolina to Florida. 85-731 fms. Gulf of Mex- 

 ico, Yucatan Strait, 640 fms. A thinner, flatter and less 

 earthy shell than that of T. obesus {z=trismuata) . 

 Genus ERYCINA Lamarck 

 floridana Vanatta, Proc. Acad. Nat. Sci., Phila., vol. 55, p. 758, 

 f. 2, 1903. 

 Distribution. — West Florida at Crooked Island, Calhoun Co. 

 Genus ROCHEFORTIA Yelain 

 planulataStimpson, Shells of New England, p. 17, 1851, (as fCel- 

 lia)\ Verrill, Inv. Vine5^ard Sound, p. 688, pi. 30, f. 6, 

 '73 ; Dall, Bull. 37, U. S. N. M.. p. 48, '89; Pr. U. S. N. 

 M., 21, p. 890, (as Mysella); Tr. W. I. S., 3, p. 1161, 

 pi. 45, f. 7, igoo. Johnson, Occ. Papers, Bost. Soc. Nat. 

 Hist., 7, p. 66, 1915. 

 Montaaita bidentata Verrill and Bush, Proc. U. S. N. AL, 

 20, p. 779, pi. 93, f. 7, 8 pi. 94, 6, '98. Not bidentata 

 Montagu, 1803. 

 Distribution.— Maine to Hatteras. Variety fragilis Verrill 

 and Bush, (Proc. U. S. N. M., 20, p. 780, pi. 92, f. 8, '98), 

 Narragan.sett Bay, R. I., and Corpus Christi, Tex. Plio- 

 cene : Caloosahatchie marl, Fla. 



Genus MONTACUTA Turton 

 floridana Dall, Proc. U. S. N. M., 21, p. 893, pi. 87, f. 10, 1899 ; 

 Tr. W. I., 3, p. 1 174, 1900; Vaughan, Publ. 133, Carn. 

 In.st., p. 171, 1910. 



