208 DRYM.-EUS, SOUTH AMERICAN. 



Mousson considered eversus (pi. 39, figs. 48, 49) distinct from' 

 violaceiis in being more fusiform with less convex whorls, longer 

 aperture, and more sharply defined coloration of waved and zig-zag 

 streaks. These differences fail in the series before me collected by 

 Bland at Marmato (pi. 35, figs. 26-29, 32). From specimens with 

 a few straight color streaks there is a full series of transitions to 

 those with numerous zig-zag markings ; and even interrupted spiral 

 bands are sometimes developed (figs. 27, 32). 



D. CONFL.UENS (PfeifFer). 



Shell compressed umbilicate, oblong acuminate, rather thin, im- 

 pressed punctate; whitish, painted with red [spadiceis] angular, 

 white-dotted streaks, somewhat confluent to form bands ; spire long 

 conic, rather acute. Whorls 6-j, a trifle convex, the last suhequal 

 to the spire, strongly compressed at base; columella arcuately 

 emerging, bearing a nodule at the base. Aperture slightly oblique, 

 rhombic-oval, subangular at base, lilac-red inside ; peristome broadly 

 expanded throughout, spreading, the right margin somewhat sinuous. 

 Alt. 40, diam. 14 mill.; aperture 18 mill, long inside, 10 wide 



Marmato, U. S. of Colombia. 



Bidimus confluens PFR., P. Z. S., 1855, p. 115; Monographia, iv, 

 p. 443. 



Seems somewhat like the preceding species. 



D. BARANGUILLANUS (PfeifFer). PI. 35, figs. 21,22. 



Shell compressed umbilicate, ovate pyramidal, rather thin, stri- 

 atulate, slightly shining ; buff whitish, irregularly marked with 

 nearly straight, narrow tawny stripes. Spire long conic, rather 

 acute ; suture shallow, whorls 7, rather flat, the last longer than the 

 spire, convex, somewhat ascending in front, subcompressed at base, 

 having a bluish streak behind the outer lip, a reddish border within ; 

 columella slightly arcuate, subplicate above. Aperture ample, 

 vertical, elliptical oval ; peristome white, thin, dilated, the right 

 margin expanded, columellar margin broadly reflexed. Alt. 32, 

 diarn. 13! mill.; length of aperture 18, width 12 mill. (P/V.). 



Baranguilla, Colombian Andes (Bid.). 



Bulimus barang uillanus PFR., P. Z. S., 1852, p. 136 ; Couchyl. 

 Cab., p. 246, pi. 66, f. 5, 6 ; Monogr., iii, p. 334. 



The only Barranguilla known to me in Colombia is at the mouth 

 of the Magdalena River. 



