BULIMTJLUS-PROTOGLYPTUS. 87 



This form differs, apparently, from Smith's unfigured B. sanctw- 

 lucice in being wider with proportionally larger aperture ; is umbil- 

 icate rather than rimate behind the flatly reflexed columellar lip, 

 the sutures are not deep but rather superficial, and the color is of 

 uniform tint throughout. Six specimens examined. As it inhabits 

 the same island, and agrees in other characters, I can hardly doubt 

 the specific identity of Swift's shells with those collected by Ramage, 

 but they evidently constitute a marked variety. 



B. CHRYSALOIDES Pilsbry. PI. 9, fig. 52. 



Shells perforate, oblong-turrited, thin, deep reddish-chestnut, 

 somewhat paler on the spire : surface lusterless, with irregular, in- 

 distinct growth-wrinkles and microscopic crowded spiral striae, very 

 superficial and probably cuticular. Spire long, the apex obtuse, 

 If nepionic whorls regularly vertically costellate, the riblets straight, 

 closer on the latter portion. Whorls 6, moderately convex, the 

 last a trifle descending in front ; sutures impressed. 



Aperture small and short, slightly oblique, short-oval, contained 

 slightly less than 2J times in length of shell, brownish-vinous with- 

 in ; peristome thin, slightly expanded ; columellar margin expanded, 

 not reflexed, forming a long triangular plate concave on the apertural 

 side; the inner edge of columella rather acute, slightly concave. 



Alt. 22, diam. 10 mill.; alt. of aperture 8 mill. 



Alt. 18f, diam. 9f mill. ; alt. of aperture 8i mill. 



Martinique. 



Bulimulus chrysaloides PILSBRY, Proc. Acad. Nat. Sci. Phila., p. 

 20 (Feb. 23, 1897). 



The nepionic whorls, when unworn, show a vertically ribbed 

 sculpture very different from the reticulate apices of the B. exilis 

 group, but like the apex of B. sanctcelucice Smith. The peculiar 

 columella also somewhat resembles that species, which in propor- 

 tions is also quite similar, but the post-nepionic sculpture and dark 

 color of chrysaloides are unlike Smith's form. 



B. DURUS (Spix). PI. 13, figs, 5, 6, 24. 



Shell umbilicated, ovate-conic, rather solid, opaque-whitish, with 

 a light brown band above and below the peripheral white girdle, the 

 lower band narrow and fading into the whitish color of the base, the 

 upper band more or less diluted above, spire light brown ; or some- 

 times all brown markings are faint or wanting. Surface shining, 



