66 Bulletin 34 9S 



Tex. Pleistocene : Labelle and Osprey, Fla., New Or- 

 leans well of 1856, Lake Borgne borings. Pliocene : Ca- 

 loosahatchie and Shell Creek, Fla. 



Genus PROTOCARDIA Beyrich 

 peramabilis Dall, B. M. C. Z., 9, p. 132, 1881, (as Ftdvia); Idem, 

 12, p. 269, pi. 4, f. 7. '86 ; Bull. 37, U. S. N. M., p. 52, 

 pi. 4, f. 7, pi. 40, f. 4, '89 ; Proc. U. S. N. M., 23, p. 388, 

 '01 ; Johnson, Occ. Papers, Best. Soc. Nat. Hist., 7, p. 

 69, 191*5. 

 Distribution. — Rhode Island to Grenada, W. I., 18-164 fms. 

 Gulf of Mexico, w^est of Florida, 50 fms. The ancestral 

 form of this very lovely deep sea shell appears to be P. 

 islahispaniolce Maur}^, from the Dominican Miocene. 



Genus DOSINIA Scopoli 



discus Reeve, Conch. Icon., 6, pi. 2, f. 9, 1850, {^.■~, Artemis)-, 

 Deshayes, Cat. Conch. Brit. Mus., p. 10, '53 ; Tryon, 

 Am. Marine Conch., p. i6r, pi. 30, p. 399, '73 ; Dall, 

 Bull. 37, U. S. N. M., p. 56, pi. 89, fig. I, pi. 90, fig. i, 

 '89 ; Singley, 4th Ann. Rept. Tex., p. 328, '92 ; Dall, 

 Proc. U. S. N. M., 26, p. 366, '03 ; Tr. W. I. S., 3, p. 

 1232, '03 ; Vanatta, Proc. A. N. S., Phila., 55, p. 757, 

 1903. 

 concentrica Conrad, Am. Marine Conch., p. 55, pi. 12, 1831 ; 

 Am. Jour. Sci., 2dSer., 2, p. 393, 1846 ; Holmes, Post-PL 

 Fos. S. C, p. 37, pi. 7, fig. 4, i860; Hilgard, House of 

 Rep. Ex. Doc, I, pt. 2, p. 887, 1878. Not Venus con- 

 centrica Born, 1780. 

 Distribution. — New Jersey to Vera Cruz. Pliocene to Recent. 

 Gulf coast. — Recent : Ft. Barranca, St. Joseph's Bay, 

 Crooked Island, &c., Fla. ; Horn Island, Miss. ; Point au 

 Fer, Chandeleurs, La. ; Galveston, Corpus Christi, Tex. 

 Pleistocene : Osprey, Fla. ; Grand Chenier {?), New Or- 

 leans artesian well of 1856 at 546 feet. Lake Borgne bor- 

 ings ( Hilgard 's concentrica) , New Orleans pumping station 

 No. 7, New Orleans Gymnasium well at 1200 feet. 



