113 



MOLLUSCA OF Tm Gui.F OF MEXICO 



82 



Genus SIMMIA Risso 



(Neosimnia) intermedia Sowerby, Spec. Conch., No. i, p. 9, f. 32, 

 33, (as Ovuluvi), Thes, Conch., Ovulum, No. 40, p. 479, pL 

 100, f. 61, 62, 1848; Reeve, Conch. Icon., Ovulum, pi. 7, f, 

 33a. b, 1865; Tryon, Man., 7, p. 251, pi. 3, f. 85-86, (as 

 Ovnla); Ball, Bull. M. C. Z., 18, p. 235, 1889; Bull. 37, U. 

 S. N. M., p. 134, '89. 



Distribution. — Hatteras to Brazil. Gulf coast, Vera Cruz. 

 15-170 fms. 



(Neosimnia) uniplicata Sowerby, Thes. Conch., p. 478, pi. 100, f. 

 30-32, 1848, (as 0^^^^/^^;7^) ; Reeve, Conch. Icon., Ovuhim,^\, 

 9, f. 51a, b, 1865; Tryon, Man., 7, p. 254, p] 5, f. 39, 40, 

 '85; Dall, Bull. 37, p. 134, '89; Bull. 112, U. S. N. M., p. 

 139, 1921. 



Ovulum subrostratum Sowerby, 1848, antillariim and arcua- 

 hcmReevQ, 1865, carolinensis Moerch, 1877. 



Amphiperas cajiadiensis Moerch, 1882 (typ. err. for carolinen- 

 sis) . 



Distribution. — Hatteras to Barbados and West Florida. 12- 

 121 fms. Also Pacific coast, San Pedro, Cal. to Lower Cal- 

 ifornia. 



Genus CYPHOMA Bolten 



gibbosa Linnaeus, Syst. Nat., ed. X, p. 726 1758, {2is Bulla); 

 Reeve, Conch. Icon., 15, pi. 7, f. 32, 1865, (^slS Ovulum)-, 

 Tryon, Man., 7, p. 250, pi. 3, f, 81, 82, 1885; Dall, Bull. 37, 

 U. S.N. M.,p. 134, '89; Dall and Simpson, Bull. U. S. Fish 

 Com., I, p. 420,1901, (as Ultimus). 



Distribution. — Georgia to Trinidad, 15-50 fms. Also West 

 Florida. 



