BULIMULUS-BOSTRYX-PERON^EUS. 143 



Irregularly ornamented with longitudinal reddish lines, interrupted 

 into dots, sometimes in pairs. Spire turrited, the apex a little acute, 

 pale. Whorls 8J, convex, the last not attaining one-third the entire 

 altitude, and somewhat attenuated at base. 



Aperture slightly oblique, auriform-oval, white within ; peristome 

 simple, not expanded, acute ; columellar margin very much dilated 

 above, reflexed, almost closing the perforation. Columella somewhat 

 twisted. Alt. 18, diam. 6 mill. ; aperture 6 mill, long, 3 wide. 



Province of Huancayo, Peru. 



B. bisculptus PFR., Malak. BL, xvi, 1869, p. 89 ; Novit. Conch., 

 iii, p. 492, pi. 106, f. 7, 8 ; Monogr., viii, p. 156. 



Similar to B. emaciatus Morel., but differing in the regularly 

 turrited spire and form of the aperture. It differs from B. elatus 

 Phil, in the more convex, shorter whorls, nearly closed perforation, 

 etc. (P/V.). 



B. EMACIATUS Morelet. PI. 45, figs. 27, 28. 



Shell subimperfomte, turrited-subulate ; rather solid, obsoletely 

 ribbed-striate ; opaque, hardly shining, white. Suture impressed. 

 Spire lengthened, the apex pale corneous. Whorls 10, convex, the 

 last not reaching one-fourth the total length of shell. 



Aperture oblique, oblong-oval, attenuated at base, brownish-yellow 

 inside ; peristome simple, not expanded, the columella margin nar- 

 rowly dilated and appressed. Alt. 22, diam. 5 mill. 



A variety is striated longitudinally with reddish. 



Interior vallies and plateaux in the Sierra, from Ayacucho to Cuzco, 

 Peru (Angrand). 



Bulimus emaciatus MOREL., Ser. Couch., iii, p. 201, pi. 11, f. 10 

 (1863). PFR., Monogr., vi, p. 119. 



This species, belonging to the group of B. lic/inium, hamiltoni, 

 rhodacme, etc., is a very much elongated shell, solid, white, moder- 

 ately shining, with rare traces of punctation. The two or three 

 earlier whorls of the spire are smooth and corneous; the following 

 are engraved with oblique and rather wide but superficial stria* ; the 

 last whorl has a moderate aperture, noticeably angular at the base 

 and fawn-colored inside. The columella is nearly vertical, dilated 

 feebly above, forming a triangular lamina which is applied to the 

 umbilical region. When this expansion does not adhere quite 



