BRACHYPODELLA, S.-G. GYRAXIS. 63 



on account of the long neck and slightly gyrate axis, but the 

 costellate apex would indicate rather alliance with Brevi- 

 pedella. The true position of the species depends upon the 

 dentition, which is unknown. 



18. B. GOULDIANA (Pfeiffer). 



Shell slightly subrimate, turrite, truncate, very densely 

 costulate-striate, silky, pale corneous; suture impressed, sub- 

 denticulate. Whorls remaining 9, a little convex, the last 

 free, shortly descending forward, somewhat compressed bas- 

 ally. Aperture suboblique, nearly circular, the right margin 

 subangular; peristome white, narrowly expanded throughout. 

 Length 10, diam. 2.33 mm., aperture 2 mm. long and wide 

 (P/Y.). 



Haiti : Rocks of Tablaso, near San Cristobal, in the Repub- 

 lic of Santo Domingo (A. Salle). 



Cyl. gouldiana PFR., Proc. Zool. Soc. Lond., 1851, p. 149; 

 Monogr., iii, p. 577. CROSSE, J. de C., 1891, p. 148. 



Differs from C. subtilis by the less slender, truncate spire, 

 wider whorls, the last not-carinate, etc. (Pfr.). Not known 

 to me by specimens. 



18a. Var. SERICATA Pilsbry, n. var. PI. 8, figs. 54, 55, 56. 



Shell slender and subcylindric, widest at the upper third, 

 slowly tapering downwards, rapidly tapering above to the ob- 

 tuse, usually entire apex, which is delicately costellate verti- 

 cally; whitish-corneous, thin, sculptured with excessively fine 

 and close, hair-like stria. Whorls quite convex on the upper 

 part, elsewhere slightly convex, separated by a deeply- 

 impressed suture, the last becoming free and descending for- 

 wardly in a rather long, somewhat contracted neck, which is 

 rather obtusely angular below, elsewhere rounded. Aperture 

 subcircular, the peristome broadly expanded. Axis slender, 

 spirally revolving about a central well or false-umbilicus in 

 the later whorls. 



Length 11.7, diam. 2 mm., whorls 13 (entire). 



Length 11, diam. 1.9 mm., whorls 12^2 (entire). 



Length 9.9, diam. 1.9 mm., whorls 11 (truncate). 



