110 OXYSTYLA, FLORIDA. 



Bulimus zebra D'ORBIGNY, in Ramon de la Sagra's Histoire Phys., 

 Polit. et Nat. de V ile de Cuba, Moll., i, p. 174 (exclusive of syn- 

 onymy and distribution), pi. 6, f. 9, 10. Conf. ARANGO, Fauna 

 Malac. Cubana, p. 130 Bulimus zebra A. BINNEY, Terrestr. Moll. 

 N. A. ii, p. 271 (in part), pi. 54, lower figure only (good). 



Orthalicus undatus var. B, SHUTTLEWORTH, Notitiae Malacologicae 

 i, p. 63, pi. 3, f. 5 (a Key West specimen coll. by Rugel). Orthali- 

 cus undatus BINNEY & BLAND, Land and Fresh- water Shells of 

 N. A., i, p. 217 (exclusive of part of synonymy and remarks), fig. 

 372.W. G. BINNEY, Terrestr. Moll, v, pp. 406, 408 (with same 

 reservation), fig. 285 (jaw), pi. 54, lower figure only; pi. xvi, f. M, 

 pi. x, f. H, (radula); Manual of American Land Shells, p. 438 (same 

 exclusions), f. 482 SIMPSON, Proc. Davenport Acad. Nat. Sci. v, 

 p. 67. 



Very readily distinguished from the Jamaican race by its more 

 ventricose form, lighter texture, more lively color both outside and 

 within the aperture, the greater prominence of the three bands, and 

 the dark apex and parietal wall. It is less solid than the Trinidad 

 race, brighter colored, with more prominent bands and varices. 



I have revived the name proposed by Thomas Say for this form, 

 as it is what his brief remark under B. undatus indicates. In form- 

 ally introducing and defining the race, I select the form found on 

 Sugar Loaf Key as the type. 



D'Orbigny figures exactly this form in de la Sagra's History of 

 Cuba, but Arango repudiates it as a Cuban species, in his Fauna 

 Malacologica Cubana, p. 130. 



Var. FLORIDENSIS Pilsbry. PI. 18, figs. 7, 8, 9, 10, 11, 12, 13. 



Ventricose, moderately solid, white, often becoming tinted with 

 light brown on the latter part of the last whorl ; lacking longitudinal 

 jftames, but, with a few tawny streaks and 1 to 3 blackish varices (on 

 the whole shell); encircled by three brown or purplish bands, the basal 

 one generally widest, the peripheral narrow, and the upper one often 

 subobsolete; tip of the apex dark; aperture showing the bands, but 

 usually no varices inside ; lip and the broad parietal callus deep chest- 

 nut colored ; columella white, straight. 



Alt. 52, diam. 31, longest axis of aperture 31 mill. 



Alt. 48, diam. 28, longest axis of aperture 27 mill. 



Florida: near Gape Sable (Hemphill, Simpson); Key Biscayne 

 (Binney); Indian Key (Wurdemann). 



