97 MOLLUSCA OF THE GuLF OF MEXICO 



Distribution. — Hatteras to Santa Marta, Brazil, 2-300 fms. 

 Pleistocene to Recent. West Florida. 

 (Laevicardium) serratum Linnaeus, Syst. Nat., ed. X, p. 680, 

 1758 ; Holmes, Post. -PI. Fos, S. C, p. 25, pi. 5, f. 5, 

 i860 ; Ball, Bull. 37, U. S. N. M., p. 54, '89 ; Tr. W. I. 

 S., 3, p. mo, 1900; Vanatta, Proc. A. N. S. Phila., 55, 

 P- 757> '03; Vaughan, 2d Ann. Rept. Fla. Surv., p. 149, 

 '09; Maury, Bull. Am. Pal. No. 29, p. 212, pi. 36, f. 8, 

 1917. 



dtrinu?n Wood, Gen. Conch., p. 223, pi. 54, f. 3, 1815. 



IcBvigatum Lamarck, An. s. Vert., pt. i, p. 11, 1819. Not 

 of Born, 1780, nor of Linn. 1758. 



oviputamen Reeve, Conch. Icon., Cardium, pi. 7, f. 36, 



1844- 

 pidiim Ravenel, Proc. Acad. Nat. Sci. Phila., p. 44, 1861. 

 Distribution. — Hatteras to Bahia, Brazil, i-ioo fms. Miocene 

 to Recent. Gulf coast. — Recent : Indian Pass, St. Joseph's 

 Bay, Crooked Island, Fla. ; Horn Island, Miss. ; Camer- 

 on, La.; Mustang Island, Tex. Pleistocene: Manatee, 

 Fla. ; New Orleans pumping station No. 7. Pliocene : 

 Caloosahatchie. 

 (Laevicardium) mortoni Conrad, Jour. Acad. Nat. Sci. Phila., 6, p. 

 259, pi. 10, f. 5-7, 1830 ; Holmes, Post-Plio. Fos. S. C, p. 

 26, pi. 5, f. 6, '60 ; Dall, Proc. U. S. Nat. Mus., 6, p. 341, 

 '83; Gould, Binney's ed., p. 143, f. 453, '70; Hilgard, 

 House of Rep. Ex. Doc. i, pt. 2, p. 888, '78 ; Dall, Bull. 

 37, U. S. Nat., p. 54, pi. 58, f. 8, '89 ; Singley, 4th Ann. 

 Rept. Tex., p. 327, '92 ; Dall, Tr. W. I. S., 3, p. mi, 

 '00; Mitchell, List Tex. Sh. ; Vanatta, Pr. A. N. S. Phila., 

 55> P- 757. '03; Vaughan, Publ. 133, Carn. Inst., p. 171, 

 '10; Johnson, Occ. Papers, Bost. Soc, N. H., 7, p. 68, 



1915- 

 Distribution. — Nova Scotia to Santa Marta, Brazil, i foot to 5 

 fms. Miocene to Recent. Gulf coast. — Cedar Keys, St. 

 Mark's, Ft. Barranca, St. Andrew's Bay, Fla, ; Galves- 

 ton, Corpus Christi, Port Lavaca, Espiritu Santo Bay, 



