127 MOLLUSCA OF THE GULF OF MEXICO 95 



cene of Maryland, p. 200, pi. 57, 1906. 



gidneensis, Chemn., 1795 ; adanso7ii Bosc, 1802 ; dedivis, 

 Turton, 1819; W(7/a/a Schumacher, 1817. 



caribcBus Lamarck, 1818 ; Conrad, Am. Marine Conch., p. 22, 

 pi. 4, f. 3, 1831 ; DeKay, Nat. Hist. New York, 5, p, 243, 

 f. 302 ; Sowerby, Conch, Icon., Solecurhis, f. 21 a-b, '74 ; 

 Holmes, Post-Pl. Fos. S. C, p. 54, pi. 8, f. 14, '60. 

 Not of Conrad, Med. Tert., 1845. 



centralis Sowerby, 1874, not of Say. 

 Distribution. — Cape Cod, Mass., to Brazil also northwest coast 

 of Africa. Miocene of Va. to Recent. Gulf coast. — Re- 

 cent : Ft. Barranca, St. Mark's, Fla. ; Chandeleurs, La. ; 

 Port Lavaca, Fort Isabel, Galveston and Matagorda, Cor- 

 pus Christi, Carancahua, Keller's and Espiritu Santo 

 Bays, Texas. <jleistocene : New Orleans. Pliocene : Ca- 

 loosahatchie beds, Fla. 

 (Mesopleura) divisus Spengler, Skrift. Nat. Selsk. 3, p. 96, 1794, 

 (as Solen); Gould, Inv. Mass., Binney's ed., p. 44, f. 368, 

 1870 ; Ball, Bull. 37, U. S. U. S.N., p. 58, pi. 56, f. 5, '89 ; 

 Tr. W. I. S., 3, p. 984, 1900 ; Mitchell, List Tex. Sh. ; 

 Vanatta, Proc. A. N. S. Phila., 55, 757, 1903 ; Vaughan, 

 2d Ann. Rept. Fla., p. 148, 1909. 



bidens Chemnitz, 1795; bidentatus Spengler, 1794; fragilis 

 Pulteney ; centralis Say, 1822, not or Sowerby, 1874 ; 

 floridana Conr ad, 1848; carp enteri Dnviker , 1861 ; equalis 

 Conrad 1863. 

 Distribution. — Massachusetts to the Antilles. Pliocene to Re- 

 cent. Gulf coast. — Indian Pass and Crooked Island, Cal- 

 houn Co., Fla. ; Texas. Pleistocene : Osprey and Orient, 

 West Fla. ; New Orleans pumping station No. 7. Plio- 

 cene : Caloosahatchie marls. 



Genus PSAMIVIOSOLEN Risso 

 (Azor) cumingianus Dunker, Proc, Zool. Soc, p. 425, 1861, (as 

 Macha); Ball, Proc. U. S. N. M., 22, p. 108, 1989; Tr. 

 W. I. S., 3, p. 961, 1900. 



lineatus Gabb, Jour. A. N. S. Phila., 2d ser., 8, p. 370, pi. 

 47, f. 71, 1 88 1, (as Tagelus). 



