29 



BULLKTIN 38 



59 



Distribution. — West Indies to Colombia. Gulf coast: 

 Chandeleurs, I^a., Corpus Christi, Tex. Pleistocene, New 

 Orleans Pumping Station, No. 7. 



dislocata Say. Jour. A. N. S. Phila., 2, p. 236, 1825, (as 

 Cerithium)\ Hilgard, House of Rep,, Ex. Doc. i, pt. 2, p. 

 887, '78; Tryon, Man., 7, p. 18, pi. 4, f. 63, '85; Singley, 

 4th Ann. Rept. Tex., p. 332, '92; Vanatta, Pr. A. N. S. 

 Phila., 55, p. 757, 1903. 



rudis OrQ.y, peiitii Kiener. Not /^/zVz Maur}^ 1917. 



Distribution. — Maryland to West Indies and Venezuela. 

 Miocene to Recent. Gulf coast Recent; Cedar Keys, Fla. ; 

 Chandeleurs, La. ; Galveston & Corpus Christi, Texas. 

 Pleistocene of New Orleans pumping station No. 7; New 

 Orleans artesian well of 1856; Lake Borgne borings; Knapp's 

 wells, Terrebonne Parish, No. I at 1600- 1700, 2000-2150 ft.. 

 No. 2 at 1150-1290, 1731-1739, No. 3 at 1 150- 1525 feet. 

 Also of North Creek, Manatee and Labelle, West Fla. Up- 

 per Miocene, Galveston well, 2158-2920 ft. 

 concava Say. Jour. A. N. S. Phila., 5, p. 207, 1827; Dall, Tr. W. 

 Inst. Sci., 3, p, 24, 1890; Singley, 4th Ann. Rept. Tex., p. 

 332, '92; Harris, Bull. Am. Pal., vol. i, p. 97, '95. 



Distribution. — N. Carolina, Georgia and Texas, at Galves- 

 ton . Pleistocene of North Creek, Fla. Pliocene, Caloosahat- 

 chie, Fla. Upper Miocene, Galveston well at 2552-2920 ft. 

 Note.— The variety vinosa Dall (Bull. M. C. Z., £8, p. 64, 

 '89) is found on the Gulf coast at Sarasota Bay and Char- 

 lotte Harbor, West Fla. 

 protexta Conrad, Pr. A. N. S. Phila., 3, p. 26, 1843, (as 

 Cerithimn); Tryon, Man. 7, p. 25, pi. 6, f. 98, 1885; Dall, 

 Bnll. 37, U. S. N. M., p. 94, '89; Tr. Wagner Inst., 3, p. 

 25, '90; Dall & Simpson, Bull, Fish Com. i, p. 382, 1901; 

 Vaughan, Publ. No. 133, Carn. lust., p. 171, 1910; Maury, 

 Bull. Am. Pal. 29, p. 28, pi. 4, f. i, 1917. 



