DRYM^US, SOUTH AMERICAN. 235 



obsolete on body-whorl, bands conspicuous, or (4) fawn colored with 

 very indistinct, slightly darker bands and streaks, and several bauds 

 of square whitish spots. Surface very glossy, with slight growth- 

 lines and very minute spiral impressed lines, often subobsolete in 

 places. Spire straightly conic, the apex slightly obtuse, nepionic 2 

 whorls typically sculptured. Whorls 65, slightly convex, the last a 

 little ascending, somewhat obliquely or laterally produced, broadly 

 rounded beneath. 



Aperture decidedly less than half the total alt., subvertical, ovate, 

 whitish within, becoming deep purple or pale yellow toward the lip ; 

 peristome broadly expanded throughout, white, its inner edge purple 

 or yellow ; columellar margin dilated, impressed at the root, then 

 rather erect ; columella purple, with a short spiral fold above. 



Alt. 33J, diam. 18 ; alt. of aperture 16 mill. 



Magdalena valley (Pfr.) ; Forests in the mountains below Erve, on 

 the road to Santa Ana (Bland), among dead leaves. 



Bulimus geometricus PFR., Symbolse, iii, p. 84 ; Monogr., ii, p. 59 ; 

 vi, p. 34. REEVE, Couch. Icon., pi. 44, f. 278. BLAND in Adams' 

 Contrib. to Conchology, no. 11, p. 230. 



Extremely variable in coloration, but constant in form. The base 

 is broadly rounded and the aperture unusually lateral and rather 

 short. 



D. CLARUS (Pfeiffer). 



Shell rimate-umbilicate, ovate-oblong, thin, smooth, shining, dia- 

 phanous; whitish under a fugaceous, slightly tawny cuticle. Spire 

 elongated, convexly conic, rather obtuse. Whorls 5<j, moderately 

 convex, the last about three-sevenths the total length, rotund basally ; 

 columella lightly arcuate. Aperture oblique, truncate oval ; per- 

 istome thin, the margins converging, right margin narrowly ex- 

 panded, columellar margin dilated, spreading. Alt. 16, diam. 7 

 mill.; aperture 7J mill, long, 4J wide. (Pf>'.). 



Moyobamba, Peru (Gueinzius, in Cuming coll.). 



Bulimus clarus PFR., P. Z. S., 1856, p. 330; Monogr., iv, p. 406. 



D. BUCIA ('Behn' Pfr.). 



Shell narrowly umbilicate, ovate-conic, rather thin and smooth. 

 Grayish-corneous, marked with wide opaque whitish and short chest- 

 nut streaks. Spire inflated-conic, acuminate. Whorls 7, the upper 

 minute, last 3 very convex, the last whorl shorter than the spire, 



