DBYM^EUS, SOUTH AMERICAN. 281 



D. STJGMATICUS (Philippi). PL 49, figs. 68, 69. 



Shell subimperforate, ovate-conic, very thin, translucent, painted 

 with close, minute reddish-chestnut dots in transverse series. Whorls 

 6, little convex, the last equal in length to the exactly conical spire ; 

 suture crenulated. Aperture ovate-oblong; columella straightened, 

 peristome unexpanded, very thin, the right margin arcuate, left 

 margin dilated above, almost entirely closing the small perforation. 

 Alt. 16, diam. 9t> mill. ; aperture 9 mill, long, 4? wide (Phil.). 



"Hacienda de Unigambal" near Cajamarca, Peru (Raimondi). 



Bulimm stigmaticus PHIL., Malak. Bl., xiv, 1867, p. 74. PFR., 

 Novit. Conch., p. 337, pi. 80, f. 12, 13 ; Monogr., vi, p. 113. 



As in many other species, the umbilical perforation is bounded by 

 a reddish band. Seems to approach B. nivalis Orb., according to 

 Philippi, but differs in coloration, the exactly conic spire, more 

 acute apex and almost completely flat whorls. The very delicate 

 strise pass into folds at the suture, which is crenulated by them. 



D. MILIARIS (Philippi). PL 48, figs. 41, 42. 



Shell subperforate, oblong-conic, very thin, very smooth, translu- 

 cent ; rufous-corneous, with close, narrow streaks and blotches of 

 milk white. Whorls 6, a little convex, the last forming three- 

 sevenths the shell's length. Aperture ovate; columella straight- 

 ened ; peristome simple, uuexpanded, very thin ; right margin 

 strongly arcuate, columellar margin moderately dilated, half cover- 

 ing the umbilical chink. Alt. 15, diam. nearly 8 mill.; aperture 7 

 mill, long, 4 wide (Phil.). 



"Hacienda de Unigambal" near Cajamarca, Peru (Raimoudi). 



Bulimus miliaris PHIL., Malak., BL, xiv, 1867, p. 74. PFR., 

 Novit. Conch., p. 347, pi. 81, f. 19-21 ; Monogr., vi, p. 115. 



Like B. nivalis Orb. and stigmaticus Phil, in size and tenuity, but 

 more lengthened with longer spire. The milky streaks are some- 

 what elevated. 



D. CLATHRATUS (Pfeiffer). 



Shell compressed, umbilicated, fusiform -oblong, rather thin, pli- 

 catulate, slightly shining ; whitish, somewhat latticed (subclathrate) 

 with narrow, interrupted, brown streaks and bands. Spire length- 

 ened, the apex rather acute. Whorls 8, little convex, the last 

 slightly exceeding two-fifths the length of shell, compressed at base. 

 Aperture scarcely oblique, subrhombic-oval ; columella lightly 



