DRYM^EUS, SOUTH AMERICAN. 291 



oblique, ovate-elliptical ; peristome simple, the right margin unex- 

 panded, lightly arcuate, columellar margin white, widely reflexed 

 above. Alt. 26-28J, diam. 10 mill.; aperture 11 J mill, long, 5i 



wide (Pfr.). 



Maranon River, ''Colombia" (Warscewicz). 



Bulimus anceps ALB., Malak. Bl., i, p. 217 (1854). PFR., Novit. 

 Conch., i, p. 43, pi. 11, f. 13, 14 ; Monogr., iv, p. 489. 



D. HEPATICUS (Albers). PI. 49, figs. 75, 76. 



Shell umbilicate, ovate turrited, rather solid, irregularly rugose- 

 striate ; bluish-chestnut with one or several white bands. Spire 

 turrited, acute. Whorls 8, a little convex, the last rotund, two- 

 fifths the length of the shell. Aperture slightly oblique, oval ; peri- 

 stome simple, the margins somewhat approaching, right margin un- 

 expanded, chestnut-edged, white-calloused inside ; columellar margin 

 dilated above, spreading. Alt. 25, diam. 1(H ; aperture 10 mill. 



long, 5 wide (P/V.). 



Maranon River "Colombia" (Warscewicz). 



Bulimus hepaticus ALBERS, Malak. Bl., i, p. 218 (1854). PFR., 

 Novit. Conch., i, p. 57, pi. 16, f. 13, 14; Monogr., iv, p. 491.- 

 ? MOUSSON, Malak. Bl., xvi, p. 177. 



D. LIBERTADENSIS Pilsbry, n. n. PI. 51, figs. 16, 17. 



Shell perforate, ovate-fusiform, striatulate, rather thin ; whitish, 

 ornamented with 5 to 6 reddish-chestnut bands, the upper ones 

 ragged. Spire conic, acute ; whorls 7, moderately convex, the last 

 as long as the spire. Columella straight, not receding. Aperture 

 oblong; peristome simple, a trifle expanded, the columellar margin 

 dilated, reflexed, elongate. Alt.- 32i, diam. 17 \ mill. ; aperture 17 

 mill, long, 9 wide (Phil.}. 



"Hacienda de Mariebal" dept. Libertad, Peru (Raimondi). 



Bulimus tceniatus PHIL., Malak. Bl., xvi, 1869, p. 35. PFR., 

 Novit. Conch., iii, p. 468, pi. 102, f. 3, 4; Monographia, viii, p. 58. 

 Not B. tceniatus Mo'rch, 1850. 



A. single specimen seen ; stria3 quite conspicuous ; apex pale 

 violaceous; on the upper whorls there are three lacerated bands, the 

 other three, which appear on the base of the last whorl, are continu- 

 ous and darker, the lowest encircling the umbilicus (Phil.}. 



D. MEXICANUS (Lamarck). PI. 49, fig. 58. 



Shell narrowly umbilicate, ovate-turrited, rather thin, nearly 

 smooth ; white, ornamented with blackish or chestnut bands crossed 



