158 



D. STRIGATUS (Sowerby). PI. 25, figs. 31, 32, 33. 



The examination of about a quart of specimens collected by Prof. 

 Steere at Tarapoto, Peru, shows that the forms I admitted as var- 

 ieties are merely more or less salient color-patterns in a continuous 

 series of variations. None of them are varieties in the true sense. 

 Three patterns, not hitherto illustrated, are here figured. 



D. RECTILINEARIS (Pfr.). Vol. ix, p. 232. 



Taken at Tarapoto by Prof. Steere, in several color-varieties. 

 White with two wide brown bands on the base, the early whorls yel- 

 low. Similar, but densely streaked obliquely with opaque white 

 throughout, the early whorls purplish. Pale orange-yellow, brighter 

 towards the tip and base, with two narrow basal bands. They vary 

 from length 2l, diam. 11, to length 25, diam. 12 mill. 



D. PUTAILLYI (Pfeiffer). 



Shell subperforate, oblong-turreted, thin, closely plicatulate, shin- 

 ing ; whitish, ornamented with 6 or 7 interrupted spadiceous band*. 

 Spire lengthened, the apex acute. Whorls 7, a little convex, the last 

 about two-fifths the length of shell, tapering at base. Columella 

 slightly arcuate, somewhat receding. Aperture slightly oblique, 

 elliptical-oblong ; peristome simple, unexpanded, the columellar mar- 

 gin paper-like, reflexed and subadnate above. Alt. 31, diam. 12 

 mill.; aperture 13^ mill, long, 6^ wide (Pfr.}. 



Brazil (Dutailly in Cuming coll.). 



Bulimus dutaillyi PFR., P. Z. S., 1856, p. 390 ; Monogr. iv, p. 470. 



Seems to belong to the group of D. papyraceus. 



D. PUNCTICULATUS (Pfeiffer). 



Shell profoundly and compressedly umbilicate, ovate- conic, rather 

 thin, smoothish, shining; whitish, with sparsely scattered, pellucid 

 dots. Spire long-conic, rather acute. Whorls 7, rather flat, the 

 upper buff; last whorl shorter than the spire, ascending anteriorly, 

 slightly compressed basally. Columella somewhat receding, lightly 

 arcuate. Aperture subvertical, oblong oval ; peristome simple, the 

 right margin narrowly expanded, columellar margin very much 

 dilated, somewhat flexuous. Alt. 29, diam. 12^ mill.; aperture with 

 peristome 14 mill, long, 8 wide. (Pfr.) Bolivia (Cuming coll.) 



Bulimus puncticulatus PFR., P. Z. S., 1856, p. 390; Monogr. iv, 

 p. 404. 



