io6 BuLivETiN 34 138 



List Tex. Sh. ; Dall, Tr. W. I. S., p. 907, '98 ; Vanatta, 

 Proc. A. N. S. Phila., 55, 757, 1903. 

 cavipechiensis QiX2.y , Wood's Ind. Test. Suppl., f. 3, 1828. 

 Distribution. — New Jersey to Southern Brazil. Type of sub- 

 genus Raeta Gray. Pleistocene to Recent. Gulf coast. 

 Recent : Alligator Harbor (Franklin County), Indian 

 Pass (Calhoun County), Fla. ; Horn Island, Miss. ; Point 

 au Fer, Cameron, La. ; Galveston, Matagorda Bay, Cor- 

 pus Christi, Tex. Pleistocene : Osprey, Fla. ; New Or- 

 leans pumping station No. 7, Knapp's wells, Terrebonne 

 Parish, No. 2 at 1 542-1632, No. 3 at 1 330-1375 feet. Pleis- 

 tocene to Upper Miocene : Galveston deep well, from 46 

 to 2871 feet (Harris). 



Genus ERVILIA Turton 



concentrica Gould, Otia Conch., p. 329 ; Proc. Bost. S. N. H., 8, 

 p. 280, 1862, Dall, Bull. 37, U. S. N. M., p, 62, '89 ; 

 Dall and Simpson, Bull. U. S. Fish Com., i, p. 474, pi. 58, 

 f. 2, 1901 ; Vanatta, Proc. A. N. Phila., 55, p. 757, 1903. 

 Distribution. — Hatteras to Florida, 124 fms. Gulf coast. — Re- 

 cent : St. Joseph's Bay and Crooked Isl., West Fla. 

 planata Dall, Tr. W. I. S., 3, p. 915, 1898. 

 Distribution. — Miocene of Oak Grove, West Fla., and of the 

 BascomNo. i well. Mobile, Ala., 1500-1556 feet (Aldrich). 



Genus CORBULA Bruguiere 

 (Aloidis) disparilis d'Orbigny, In Sagra's Hist. Pol. y Nat. Isla 

 de Cuba, 2, p. 283, pi. 27, f. 1-4, 1845 ; Dall, Bull 37, U. 

 S. N. M., p. 70, pi. I, f. 4 a-b, 1889 ; Tr. W. I. S., 3, p. 

 853, 1898. 

 philippi Svaxih., 1885 ; operculata Philippi, 1849. 

 Distribution. — Hatteras to Barbados, 5-805 fms. Pliocene to 

 Recent. Gulf coast. — Off West Florida in 30 and 50 fms. 

 Pleistocene : Teel No. i well, Saratoga, Tex. at 940 feet ; 

 Knapp's No. 3 well, Terrebonne Parish, La., 1330- 1375 

 feet. 

 (ASoidis) galvestonensis Harris, Bull. Am. Pal., i. No. 3. p. 94, 



