88 Bulletin 34 X20 



leptonoidea Dall, Nautilus, 9, p. 33, 1895 ; Proc. U. S. N. M.^ 

 23, pp. 299, 323, pi. 4, f. 4, 9, 1901 ; Checklist Rec. West 

 Coast Moll., p. 36, 1916. 



Distribution. — Matagorda Bay, Texas (type locality), in shal- 

 low, warm water ; Santa Barbara channel, California, 

 dredged at 332 and 314 fms., temperature 44° F. Showing 

 an unusual adaptability to warm and cold temperatures. 

 mitchelli Dall, Nautilus, 9, p. 33, 1895 ; Proc. U. S. N. M., 23, 

 pp. 299, 314, pi. 2, f. 4, 5, 1901 ; Bull. 37, U. S. N. M., 

 reprint suppl. pis., pi. 92, f. 4; Mitchell, List Tex. Sh., 

 page 4. 



Note. — Mr. J. D. Mitchell discovered this species in Caranca- 

 hua Bay, in muddy sediments just beneath the surface. 



Distribution — Charleston, S. C, and Matagorda and Caranca- 

 hua Bays, Texas. 

 phenax Dall, Proc. U. S.N. M., 23, pp. 299, 314, 1901. 



Distribution. — Chesapeake Bay ; Tampa Bay. 

 tentaSay, Am. Conch., pi. 65, f. 3, 1834, (as Tellina); Holmes, 

 Post-PL Fos. S. C, p. 46, pi. 8, f. 3, '60 ; Gould, Inv. 

 Mass., Binney's ed., p. 96, f. 402, '70 ; Hilgard, Rept. of 

 Engineers to Sec. of War, p. 358, 1870 ; House of Rep. 

 Ex. Doc, 1, pt. 2, p. 887, '78; Dall, Bull. 37, U. S. N. 

 M., p. 60, pi. 56, f. 10, '89 ; Tr. W. I. S., 3, p. 1049, 1900; 

 Proc. U. S. N. M., 23, p. 299, '01 ; Vanatta, Proc. Acad. 

 Nat. Sci. Phila., 55, p, 757, 1903. 

 souleyetiana Recluz, Jour, de Conch. 3, p. 253, pi. 10, f. 5 



1852. Not ^£'/^/^<?/z Hanley, Proc. Z. S., p. 71, 1844. 

 reduzia?ia Tryon, Cat. Tell., p. 98, '69. 



Distribution. — Cape Cod to Rio la Plata. Pliocene to Recent. 

 Gulf coast. — Crooked Isl.. Fla. (?); Point au Fer, La. 

 Pleistocene : Lake Borgne borings ; New Orleans well of 

 1856, at 41 feet ; (?) New Orleans Gymnasium club well 

 at 1200 feet. Pliocene : Caloosahatchie. 



Note. — Variety souleyetiana Recluz is the more southern form, 

 tinted delicately with orange. 



