42 



Bulletin 34 



74 



Genus HALSR9S Ball 

 fisheriana Dall, B. M. C. Z., 9, p. 106, 1881 ; Idem, 12, p. 291, pi. 

 2, f. \a-b, '86 ; Bull. 37, p. 66, pi. 2, f. 4 1889. 

 Distribution. — North Atlantic to Barbados. 84-229 fms. Gulf, 

 West Fla. region. 



Genus ANiSODONTA Deshayes 

 (8asterotia) quadrata granatina Dall 



Corbula quadrata Hinds. See Reeve, Conch. Icon., Corbula, 

 f. 40, 1843. 



Poromy a? granatina Dall, B. M. C. Z., 9, p. 109, '8i. 

 quadrata var. granatina Dall. B. M. C. Z., 12, pi, 1, 2, 

 1886. 



Distribution. — Typical form, Cape Lookout to St. Thomas, 

 var., Yucatan Strait, 640 fms. 

 (Fulcrella) elliptica Recluz 



Eucharis elliptica Recluz, Jour, de Conch. 1, p. 168, 1850. 

 Mya simplex Holmes, Post-Pi. Fos. S. C, p. 55, pi. 8, fig. 

 16, 1858. 



Anisodonta elliptica Vanatta, Proc. Acad. Nat. Sci. Phila., 



55, P- 756, 1903- 

 Distribution. — N. Carolina to West Florida. Pleistocene to 

 Recent. Gulf coast. — Crooked Isl., Calhoun Co., Fla. 

 The ancestral form is A. Carolina Dall, N. Car. Miocene. 



Genus CETOCONCHA Dall 

 bulla Dall, B. M. C. Z., 6, p. 61, 1878, (as Lyonsia) ; Idem, 9, p. 

 107, '81 : 12, p. 283, '86, (as Poromya); Bull. 37, p. 68, 

 pi. 39, f. 2, 5 , pi. 65, f. 130, '89. 

 Distribution. — Chesapeake to Gulf of Mexico, 1 917- 1920 fms. 

 Gulf, Lat. 24 0 N., Long. 84 0 W., temperature 39 0 F. All 

 species recent, abyssal. 



Genus CUSPIDARSA Nardo 



glacsaSis Sars, Moll. Reg. Arct. Norv., 88, pi. 6, f. 8, 1878, 

 (as Necera); Verrill and Bush, Proc. U. S. N. M., 20, p. 

 800, pi. 71, f. 9, '98 ; Dall, Bull. 37, U. S. N. M., p. 66, 

 '89 ; Johnson Occ. Papers, Bost. Soc. Nat. Hist. 7, No. 



