5^ MOLLUSCA OF THE GuLK OF MEXICO IQ 



zil. Upper Miocene to Recent. Gulf coast. — Recent: 

 Calhoun County, Florida ; Horn Island, Mississippi ; 

 Cameron, Point au Fer, Louisiana ; Gah^eston, Corpus 

 Christi, Texas. 



Plei.stocene : New Orleans pumping station No. 7, Grand 

 Chenier, Knapp's wells, Terrebonne Parish, No. i at 

 2000-2150 (?), No. 2 at 1434-1519, No. 3 at 570-700, 

 Beaumont Pretoleum and Liquid Fuel Co.'s well No. i, 

 Saratoga, Texas, at 705 feet ; Weiss No. i, Saratoga, 

 (depth not recorded). Upper Miocene : Galveston artes- 

 ian well at 2433-2920 feet (Harris). 

 / Cunearca ) chemnitzi Philippi 



Area Chenmitzii Philippi, Zeitschr. fiir Malakozoologie, vol. 

 8, p. 50, 1851. 



{Noefia) <9r%;/j/ (Kobelt) Ball, Bull. 37, U. S. Nat. Mus., 

 p. 40, 1889. 



(yCunearca) Chemnitzi Ball, Trans. Wagner Inst. Sci., vol. 

 3, pt. 4, pp. 636, 659, 1898; Sheldon, Palseont. Amer., 

 vol. I, p. 60, pi. 15, figs. 3, 4, 1916. 

 Distribution.— Texas and West Florida to St. Thomas (Ball). 



(Arginaj campechensis Gmelin 



Area eajnpechensis Gmelin, Syst. Nat., vol. 6, p. 3312, 1792. 



eampeehensis Billwn, Bescr. Cat. Rec. Shells, vol. i, p. 238, 

 1817. 



pexata Say, Jour. i\cad. Nat. Sci., Phila., 2, p. 268, 1822. 



amerieana Gray, Wood's Index Test. Suppl., pi. 2, Area, 

 fig. I, 1828; Reeve, Conch. Icon., Area, fig. 21, 1844; 

 Hilgard, House of Rejx Ex. Boc. i, pt. 2, p. 887, 1878 : 

 Holmes, Post-Plio. Fos. S. C, p. 19, pi. 4, figs. 2, 2 a. 

 i860; Ball, Bull. 37, U. S. Nat. Mus. p. 40, 1889 ; Sing- 

 ley, Fourth x\nn. Rept. Geol. Surv. Texas, p. 325, 1892. 



pexata Gould, Inv, Mass., Binney'sE d., p. 147, fig. 456, 

 1870: Hilgard, loe. cit., p. 887. 187S ; Ball, Bull. 37. V. 

 S. Nat. Mus., p. 40, 1889 ; Single}-, Fourth Ann. Rept. 

 Geol. Surv. Texas, p. 325, 1892. 



