DRYM^SUS, WEST INDIES. 17 



Alt. 24, diam. 10, length of aperture 10, width 5 mill. (Guppy.) 



Var.: like the type, but yellowish or greenish, devoid of color- 

 bands, and somewhat broader. 



Dominica (Guppy, Ramage, G. E. & A. H. Verrill). 



Bulimulus laticinctus GUPPY, Ann. Mag. N. H. (4), i, 1868, p. 



431 BLAND & BINN., Ann. Lye. N. Y. x, 1871, p. 81, pi. 2, f. 1, 



5 (dentition). PILSBRY, Trans. Conn. Acad. viii, p. 356. Buli- 

 mus (Leiostracus) laticinctus E. A. SMITH, Ann. Mag. N. H. (6), 

 ii, p. 230. Mormus laticinctus W. G. BINNEY, Ann. N. Y. Acad. Sci. 

 iii, p. 122, pi. 12, f. I (radula). 



M6re slender and elongated than D. multifasciatus, but similar in 

 texture and sculpture. The broad second band may be regarded as 

 formed by the coalescence of bands ii and iii of a 5-banded parent 

 stock. 



D. VINCENTINUS (Pfeiffer). PI. 13, figs. 1-7. 



Shell subperforate, fusiform, thin ; white or faintly yellow tinted, 

 unicolored or with five chestnut or bluish-brown spiral bands, usually 

 subequal in width, and equidistant, or with the upper and lower in- 

 tervals slightly wider. Surface glossy, showing fine growth-lines and 

 minute engraved spiral strise ; spire conic, the apex rather obtuse, 

 with typical Drymceus sculpture, and usually reddish or blackish in 

 banded specimens. Whorls 6, slightly convex, the last tapering be- 

 low the periphery. 



Aperture oblong, decidedly oblique, the length usually exceeding 

 twice the width (measured inside),. yellow tinted or showing bands 

 within ; peristome thin, the lower part of the outer, and the basal 

 margin well expanded ; columella with convex inner edge, obliquely 

 truncated at base (figs. 4, 6), with no perceptible fold above ; the 

 margin triangularly reflexed above, nearly closing the perforation. 



Alt. 30, diam. 12, length of aperture 15 mill. 



Alt. 261, diam. 12, length of aperture!3J mill. 



Trinidad (Guppy and others) ; Tobago (Dr. B. Sharp) ; St. Vincent 

 (Pfr.). 



Bidimus vincentinus PFR., P. Z. S. 1846, p. 30 ; Monogr. ii, p. 

 103; iii, 338; iv, 397; vi, 44; viii, 56. REEVE, Conch. Icon, 

 pi. 55, f. 366. BLAND, Amer. Jour. Conch, iv, p. 182. Bulimulus 

 vincentinus CROSSE, Journ. de Conchyl. 1890, p. 42. GUPPY, 

 Journ. of Conch, vii, p. 219 (1893). Bulimulus vincentinus Pfr., 

 2 



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