99 



Bulletin 38 I29 



galvestonense Harris, Bull. Amer. Pal., vol. i, p. 104, pi. 4, f. 8, 

 1895. 



Distribution.— Upper Miocene, Galveston vi^ell at 2550-287 £ 

 feet. 



Genus MODULUS Gray 



modulus Ivinnseus, Syst. Nat., ed. X, p. 757, 1758, (as Trochus); 

 Dall, Bull. 37, U. S. N. M., p. 142, 1889; Singley, 4th Ann. 

 Rept. Tex. G. S., p. 339, '92; Dall and Simpson, Bull. U. 

 S. Fish Com., i, p. 427, 1901. 



lentiailaris Chemnitz, Tryon, Man., 9, p. 261, pi. 48, f. 91,92, 

 1887. 



Distribution. — Ilatteras to Brazil and to Cartagena, Colom 

 bia. Gulf coast: West Florida, Chandeleurs,La.; Galveston, 

 Corpus Christi, and Espiritu Santo Bay, Tex. Between 

 tides. Pliocene, Caloosahatchie and Shell Creek, Fla, Up- 

 per Miocene, Galveston well at 2552-2871 feet (identifica- 

 tion doubtful). 



floridanus Conrad, Amer. Jour. Conch., 5, p. 107, pi. i2,f. 6, '70: 

 Hilgard, House of Rep. Ex. Doc, i, pt. 2, p. 887, 1S78; 

 Dall, Pr. U. S. N. M., 6, p. 335, '83; Bull. 37, U. S. N. 

 M., p. 142, '89; Tr. W. I. S., 3, p. 295, '92; Vaughan, 

 Publ. No. 133, Carn. Inst., p. 171, 1910. 



Distribution. — Hatteras to St. Thomas, W. I. Gulf coast. 

 Cedar Keys and St. Mark's, West Fla. Pleistocene, Lake 

 Borgne borings. La., and North Creek and Labelle, Fla. 

 Pliocene, Caloosahatchie beds, Fla. and of the New Orleans 

 Gymnasium club well at 1200 feet. 



Genus PACHYCHEtLUS Lea 



anagrammatus Dall, Proc. U. S. N. M., 46, p. 232, pi. 21, f, 

 5, 8, 1914. 



Distribution. — LTpper Miocene or Pliocene. Well near 

 Alexandria, La., at 49 feet. Also near Burkeville, Texas, 



