138 MOLLUSCA OF THE GULF OF MEXICO 108 



Genus ALABA A. Adams 



tervaricosa C. B. Adams, Pr. Bost. Soc, N. H., 2, p. 6, 1845, 

 {as J^issoa); Moerch, Malak, Blatt., 23, p. 57, 1876; Dall, 

 Bull. U. S. N. M., p. 146, '89; Dall and Simpson, Bull. U. 

 S. Fish Com., i, p. 431, 1901. 



Distribution. — Tampa, West Fla., to Haiti. 



Genus ARCHSTECTOS^ ICA Bolten 



granuSata Lamarck, Anim. s. Vert., 7, p. 3, 1822; Enc^^ Me'th., 

 pi. 446, f. 5a-b, 1792, (as Solarium); Dall, Tr. W.I.S., 3, p. 

 329, 1892; Pr. U. S. N. M., 37, p. 232, 1910; Maury, Bull. 

 Amer. Pal., No. 29, p. 131, pi. 23, f. 3, 1917. 



perspediva Tuomey and Holmes, PI. Foss. S. Car., p. 120, pi. 

 26, 1857. Not of Linnaeus nor Lamarck. 



Distribution.— Llatteras to the Antilles. Gulf coast at 

 Chandeleurs, La., Matagorda and other localities, Tex. 

 Also Pacific Ocean, Lower California to Peru. Pleistocene, 

 New Orleans pumping station No. 7; Upper Miocene, Gal- 

 veston well at 21 58-287 1 feet. Lower Miocene, Chipola 

 marl. West Fla., and Dominican Republic. 



Genus TORSi^SA Gray 



cylindrica Gmelin, Syst. Nat., p. 3572, 1792, (as Trochus); Tryon, 

 Man,, 9, p. 17, pi. 5, f. 82, 1887; Dall, Bull. 37, U. S. N. 

 M., p. 148, '89; Dall and Sampson, Bull. U. S. Fish Com., 

 I, p. 432,1901. 



Distribution.— Texas to St. Thomas, W. I. 



canalifera C. B. Adams. Dall, Bull. 37, U. S. N. M., p. 148, 

 1889. 



Distribution. — Texas to Guadeloupe. 



Genus RiSSOA Fre'minville 



precipitaia Dall, Bull. M. C. Z., 18, p. 279, pi. 19, f. i, 1889; 

 Bull. 37, IT. S. N. M., p. 148, pi. 19, f. I, '89. 



