BULIMULUS. 143 



Section 



B. DENTAXIS n. sp. PI. 25, figs. 16, 17. 



Shell rimate, cylindric-tapering, rather thin ; glossy, opaque white, 

 copiously striped with several shades of brown. Spire long, tapering, 

 with convex outlines, the apex rather obtuse. Whorls 7, the first 

 sculptured with slight inconspicuous, waved and anastomosing 

 wrinkles, and much better developed spiral striae ; the following 

 whorls but slightly convex, with low or subobsolete wrinkles of 

 growth, stronger below the sutures. Aperture long-ovate, striped 

 within, somewhat oblique ; peristome thin and acute, the outer 

 margin regularly arcuate, scarcely expanded, the columellar margin 

 reflexed above. Columella bearing a strong obliquely entering callous 

 fold or tooth. 



Length 17^, diam. 6, longest axis of aperture 7 mill. 



Length 19, diam. 6, longest axis of aperture 7| mill. 



Peru (Steere exped.). 



The coloration reminds one of Neopetraus lobbi. The columellar 

 tooth-like fold and the apical sculpture leave me in doubt where to 

 place the species. It occurred with specimens of B. andoicus Morel. 



Section BULIMULUS s. str. 

 B. GUADALUPENSIS (Brug.). Vol. xi, p. 38. 



This name must replace that of B. exilis, as Helix exilis Gmel., 

 Syst. p. 3668 was preoccupied by Gmelin on p. 3616 of the Systema. 



Another Porto Rican locality is Ceiba (Blauner). 



Additional references to the literature of fraterculus auct. (p. 40) 

 are: Ann. Lye. Nat. Hist, of N. Y. ii, p. 123. Journ. de Conchyl. 

 1890, pp. 25, 43; 1892, p. 23, 62, 66, 67. Jahrb. iv, 351. Conch. 

 Mittheil. p. 163. Bulimulus fraterculus Strebel, torn, cit., p. 56, pi. 

 12, f. 16; pi. 13, f. 1-3; pi. 14, f. la-d (shell and anatomy of a 

 Porto Rico specimen). 



Leptomerus limnaeoides Fer., W. G. BINNEY, Ann. N. Y. Acad. 

 Sci. iii, p. 123, pi. 16, f. I (jaw); pi. 12, f. E (radula ; specimen 

 from St. Kitts). 



Leptomerus sepulchralis W. G. BINNEY, Ann. N. Y. Acad. Sci. 

 iii, p. 124, pi. 11, f. J (jaw and radula). 



B. CORIACEUS (Pfr.). Vol. xi, p. 51. 



Tabasco and San Juan Bautista (Smith) ; Cacofieto, Tehuantepec. 



