DRYM^EUS-STENOSTYLUS. 315 



flat, the last nearly double the length of the spire ; suture submar- 

 giuate, crenulated. Aperture oblong-oval ; columella simple, thread- 

 like ; peristome simple, unexpended, the columellar margin ap- 

 pressed, dilated. Alt. 33, diam. 16* mill. (Phil.). 



" Hacienda de Unigambal," Peru (Raimondi), 3,200 meters eleva- 

 vation. 



Bulimus troscheli PHIL., Malak. Bl., xiv, 1867, p. 71. PFR., 

 Novit. Conch., p. 345, pi. 81, f. 13, 14 ; Monogr., vi, p. 89. 



Seems to be nearly allied to B. kochi Pfr. Embryonic whorls 

 very densely impressed-punctate ; columellar margin dilated ; last 

 whorl obliquely descending near the suture (Phil.'). 



D. NIGROLIMBATUS (Pfeiffer). PI. 46, figs. 47, 48. 



Shell imperforate, ovate, thin, rugose, somewhat granulated by 

 close spiral striae, slightly shining ; tawny olivaceous, variegated by 

 narrow chestnut streaks. Spire conic, the apex obtuse. Whorls 5, 

 a little convex, the last somewhat longer than the spire, more con- 

 vex, the base rotund. Columella thin, somewhat calloused, rather 

 receding. Aperture oblique, angular-oval, plicated and with a 

 pearly luster inside ; peristome simple, unexpanded, obtuse, mar- 

 gined with black. Alt. 28, diam. 14 ; alt. of aperture 15* mill. 



Andes of New Granada (Cuming coll.). 



Bulimus nigrolimbatus PFR., P. Z. S., 1851, p. 157 ; Monographia, 

 iii, p. 382 ; Conchyl. Cab., p. 81, pi. 21, f. 26-30. 



Pfeiffer describes and figures two varieties : beta, form nearly as 

 in the type, color olivaceous with darker streaks, the spiral lines ob- 

 solete ; alt. 29, diam. 14, alt. of aperture 16 mill. (fig. 56). Var. 

 gamma, shell more ovate, colored like the type; alt. 25*, diam. 13*, 

 length of aperture 15 mill. (figs. 50, 51). 



D. MELEAGRIS (Pfeiffer). PL 46, figs. 52, 53. 



Shell imperforate, acuminate-ovate, rather thin, granulated by 

 close growth-stride and spiral lines, little shining; tawny, streaked 

 and irregularly blotched with brown. Spire conic, acute; suture 

 somewhat crenulated. Whorls 5*, rather flattened, the last a little 

 longer than the spire, more convex, descending in front, rotund at 

 base. Columella thread-like, lightly arcuate. Aperture oblique, 



