BULIMULUS-SOUTH AMERICAN. 61 



panded, the right margin regularly arcuate, columellar margin 

 vaultingly reflexed. Alt. 22, diam. 11 mill.; alt. of aperture 11, 

 width 6 mill. (P/r.). 



Curiana, Venezuela, on cacti (Dyson). 



Bulimus erectus REEVE, Conch. Icon., pi. 58, f. 392 (Jan. 1849). 

 PFR., Monogr., iii, p. 439. 



" Of a uniform horn color, with peculiarly erect spire " (Rve). 

 Seems to differ from B. cacticolus only in being somewhat more 

 slender, with stronger longitudinal and spiral sculpture. The name 

 erectus has precedence on Reeve's pages. 



B. MARMATENSIS (Pfeiffcr). Unfigured. 



Shell perforate, globose-conic, thin, striatulate, pellucid, pale 

 grayish-tawny. Spire conic, rather obtuse. Whorls 4, moderately 

 convex, the last slightly longer than the spire, rounded. Columella 

 lightly arcuate. Aperture little* oblique, rotund-oval ; peristome 

 simple, unexpanded, the right margin very arcuate, columellar 

 margin dilated above, reflexed, vaulted over the narrow perfora- 

 tion. Alt. 17, diam. 10 mill.; aperture 10 mill, long, 7 wide. 



Marmato, U. S. of Colombia (Cuming Coll.). 

 Bulimus marmatensis PFR., P. Z. S., 1854, p. 125 ; Monogr., iv, 

 p. 501. 



B. HYALOIDEUS (Pfeiffcr). Unfigured. 



Shell narrowly umbilicate, ovate-conic, thin, irregularly striatu- 

 late, somewhat hyaline; spire regularly conic, the apex rather 

 acute. Whorls 5, convex, the last a little shorter than the spire, 

 with rounded base. Aperture little oblique, rounded-oval ; peri- 

 stome simple, acute, the margins approaching, right margin unex- 

 panded, very arcuate, columellar margin arcuate, somewhat spread- 

 ing. Alt. 12*, diam. 1% mill. ; aperture 6 mill, long, 4 wide. (Pfr.'). 

 Mendez, in the Andes of Colombia (Cuming Coll.). 



Bulimus hyaloideus PFR., P. Z. S., 1854, p. 292 ; Monogr., iv, p. 

 505. 



May be allied to B. guttula Pfr. 



B. GLANDINIFORMIS Sowerby. PI. 10, figs. 93, 94. 



Shell narrowly perforate, oblong, very thin, shining, pellucid, 

 straw-whitish ; longitudinally rugulose-striate. Spire turrited, the 



