119 Bulletin 38 149 



W. I. S., 3, p. 36S, '92; Vanatta, Pr. A. N. S. Phila., 55, 

 P- 75^^. 1903; Johnson, Occ. Pa. Bost. Soc. N. H., 7, p. 105, 

 1915- 

 campechiensis Reclnz, /t),w<rz/a Gould, icxasiana Roemer. 



Distribution. — Massachussetts to Mexico. Gulf coast: Cedar 

 Ke5^s, and man}^ other localities, West Fla., Horn Island, 

 Miss.; Point au Fer, Cameron, Chandeleurs, La.; Matagorda 

 Bay and Galveston, Tex. Pleistocene, Grand Chenier, 

 New Orleans well of 1856, New Orleans pumping station No. 

 7, Zigler, No. 15, Jennings, La., at 1 350-1481 feet, Jennings- 

 Heywood No. 30 well at 1127-1169, 1169-1277 feet, Knapp's 

 wells, Terrebonne Parish, No. 2, at 1 150-1200, 1330-1375, 

 1 443- 1 618, 1 700- 1 839 feet. Pliocene G5^ranasium Club well 

 at 1200 feet. Chesapeake Miocene, Maryland to Florida. 

 Upper Miocene, Galveston well at 215S-2920 feet. Miocene, 

 Crowle}^ No. 25 well, Jennings, La., at 2468-2500 feet. 



Subgenus Payraudeautia Bucq. Dautz. & DoUf. 



nubiia Dall, Bull. M. C. Z., 18, p. 294, 1SS9, {2.S Neverita); 

 Dall and Simpson, Bull. U. S. Fish Com., i. p. 439, pi. 58, 

 f. 6, 190 f. 



Distribution. — Gulf of Mexico, Blake station 23, at 190 fms. 

 Also off Barbados, 140 fms, and Porto Rico. 



Subgenus IVIammilia Schumacher 



uberina d'Orbigny, Moll. Cubana, 2, p. 31, pi. 17, f. 19, 1842, 

 (as A^a/zVa); Moerch, Malak. Blatt., 24, p. 60, 1877; Tryon, 

 Man., 8, pi. 16, f. 57, '86; Dall and Simpson, Bull, U. S. 

 ■ Fish Com., i, p. 439, 1901. 



Distribution. — Gulf of Mexico, west coast of Florida, 14-40 

 fms., living. Also off Sombrero 54-70 fms. and Porto 

 Rico. 



lactea Guilding, Tr. Linn. Soc, 17, p. 29, '33; {ns Natichia); 

 Tryon, Man, 8, p. 49, pi. 16, f. 57, 58, '86; Dall, Bull. 37, 



