20 DRYM^US, WEST INDIES. 



or in large specimens 6J to 7, scarcely convex, except the last, which 

 is somewhat carinate. Aperture ovate ; peristome acute, slightly 

 effuse. 



Alt. 25, breadth 10, length of aperture 10 mill. (Guppy.) 



Savana Grande, Trinidad, on trees (Guppy). 



Bulimus aureolus GUPPY, Ann. Mag. N. H. (3), xvii, 1866, p. 49. 

 BLD., Amer. Jour, of Conch, iv, p. 184. PFR., Monogr., p. 148. 

 Bulimulus aureolus GUPPY, Amer. Jour. Conch, vi, p. 307 (exclu- 

 sive of varieties fasciatus, imperfectus and rawsoni); Jour, of Conch, 

 vii, p. 218 (exclusive of same varieties); Jour, of Conch, i, p. 109. 

 CROSSE, Journ. de Conchyl., 1870, p. 42 Bulimulus (Drymceus) 

 aureolus SMITH, Journ. of Conch, viii, p. 241, pi. 8, f. 6. 



D. RAWSONI (Guppy). PI. 12, fig. 6. 



Shell narrowly perforate, oblong-conic, rather thin, glossy, milk 

 white, with the apex and a small area around the columella luff. 

 Growth' striae fine and faint, decussated by minute engraved spiral 

 striae. Spire conic, the apex rather obtuse, showing typical Drymceus 

 sculpture. Whorls about 6, slightly convex, the last subangular in 

 front in young, and slightly so in most adult individuals; tapering 

 below. 



Aperture slightly oblique, oblong, narrowed toward the ends and 

 acuminate above, white inside ; peristome thin, simple, the outer lip 

 slightly sinuous, basal lip a trifle expanded, columella straight, ob- 

 liquely truncated below, the profile view showing a projecting angle 

 as in D. vincentinus ; margin reflexed above. 



Alt. 24, diam. 11, length of aperture 11-llJ mill. 



Island of Tobago (Rawson). 



Bulimulus aureolus var. rawsoni GUPPY, Amer. Journ. of Conch, 

 vi, 1871, p. 308, pi. 17, f. 6 Bulimus (Drymceus) rawsonis H. 

 ADAMS, P. Z. S., 1873, p. 208, pi. 23, f. 12. PFR., Monogr. viii, 



p. 151 Bulimulus (Drymceus) rawsoni H. Ad., SMITH, Journ. of 



Conch, viii, p. 242. Drymceus rawsonis W. G. BINNEY, Ann. N. Y. 

 Acad. Sci. iii, p. 121 (radula). 



Milk white, with yellow apex and columellar streak ; the aperture 

 decidedly less than half the total length, shaped much as in D. vin- 

 centinus except that the peristome is not expanded. Mr. Smith in- 

 cludes it in his Trinidad list, but I know of no record of its occur- 

 rence outside of Tobago. 



