8TROPHOCHEILUS-BORUS. 19 



more as in B. mathiusii. Ground-color of these whorls is a rather 

 reddish moderately dark brown, the sutural band narrow and yellow- 

 ish, spiral striation only seen by strong magnification. On the 

 fourth whorl the spiral striation is more distinct, the riblets change 

 rapidly to close flat wrinkle-strue, and numerous spiral series of very 

 small rounded granules appear, which continue to become more dis- 

 tinct upon the following whorls to the aperture. The last whorl and 

 aperture are narrower below than in B. mathiusii, the suture ap- 

 pressed ; peristome white, somewhat thicker, but not reflexed, the 

 columellar margin less curved, parietal callus thicker. (Martens). 



Length 70, diam. 30 ; apert. long 36, width 23 mill. 



Length 67, diam. 32 ; apert. long 34, width 22*, inside 17 mill. 



Montana de Cuzco, Peru (Dohrn). 



B. durfeldti DOHRN, Mai. Bl. x, 1863, p. 152. PFR., Monogr. vi, 

 p. 11. MARTENS, Novit. Conch, v, p. 8, pi. 140, f. 4, 5. 



Distinguished from the foregoing species by the granulation of 

 the body whorl. 



S. HUPEANUS Morelet. PI. 8, fig. 40 ; pi. 9, fig. 44 ; pi. 15, fig. 23. 



Shell oblong, rather thin, longitudinally striate-rugulose and all 

 over most minutely granulose. Spire rather obtuse ; whorls 5, sub- 

 convex, the last subventricose, a little depressed, equal in length to 

 the spire. Aperture oblong-oval ; peristome thickened, reflexed ; 

 columella somewhat twisted. Greenish-brown, the spire rose-tinted, 

 sutures pale ; aperture and lip white. 



Alt. 68, diam. 34 mill. (Hupe). 



Peru (Castelnau) ; Valley of Vilcabamba (Angrand) ; Valley of 

 Lares (Raimondi). 



Bulimus castelnaui HUPE in Castelnau Exped. Moll., p. 27, pi. 4, 

 f. 2 (1857). MARTENS, Novit. Conch, v, p. 9. (Not B. castelnaui 

 Pfr., 1856). B. hupeanus MOREL., Series Conch. Ill, 1863, p. 170. 

 PFR., Monogr. vi, p. 1 1 . Bui. leacostomus PFR., Novit. Conch, iii, 

 p. 409, pi. 94, f. 1, 2. 



In many respects similar to B. durfeldti, especially in the upper 

 whorls, but the riblets somewhat weaker, so thatjit is doubtful 

 whether the species may not technically be placed in the group of 

 oblongus. Moreover the whole shell is thinner thanjin durfeldti, the 

 mouth proportionally larger, the peristome much thinner and the 

 parietal wall more steep. The sculpture of the)last whorl also con- 



