BULIMULUS-SCUTALUS. 21 



lated. Whorls, 7, quite convex, the two embryonic whorls smooth 

 and polished, whitish ; last whorl a little shorter than the spire. 



Aperture oval, livid white inside ; peristome thick, reflexed and 

 white ; margins joined by a thin parietal callus ; the columellar 

 margin nearly straight, strongly dilated and covering in part the 

 umbilical perforation ; basal margin wide, outer margin narrowing 

 toward its upper insertion. Alt. 51, diam. 25 mill. ; alt. of aperture 

 24, width with peristome 17 mill. (Crosse). Peru. 



Bulimus pluto CROSSE, Journ. de Conchyl., xvii, 1869, p. 422 ; 

 ]871, p. 62, pi. 2, f. 4. 



Seems to be most nearly allied to B. tupacii Orb. 



B. PETITI (Pfeiffer). PI. 4, fig. 54. 



Shell perforate, ovate-conic, rather solid, longitudinally rugose- 

 striate, very obsoletely subdecussated with irregular concentric 

 striae ; brown. Spire conic, the apex obtuse, pale, suture crenulated, 

 white-edged. Whorls 6, rather flat, the last a little longer than the 

 spire. Columella lightly arcuate. Aperture acute-oval, somewhat 

 shining and livid inside; peristome simple, unexpanded, the right 

 margin acute, columellar margin dilated, white, reflexed and free. 

 Alt. 36, diam. 16 mill; aperture 19 mill, long, 11 wide. (Pfr.). 



Peru (Mus. Cuming). 



Bulimus petiti PFR., P. Z. S., 1846, p. 31 ; Monogr., ii, p. 185. 

 REEVE, Conch. Icon., pi. 37, f. 222. 



B. PURPURATUS (Reeve). PL 4, fig. 57. 



Shell umbilicate, ovate-conic, solid, thick, corrugated ; purple- 

 brown, with whitish streaks and spots. Spire conic, rather acute. 

 Whorls 6?, nearly flat, plicate-crenate at the impressed suture, the 

 last whorl a little shorter than the spire, rotund at base. Aperture 

 nearly vertical, oval, white inside; peristome unexpanded, some- 

 what thickened within, the columellar margin much dilated, vaulted, 

 reflexed. Alt. 36, diam. 16 mill.; aperture 18 mill, long, 9 wide. 



Andes of Catamarca, Peru (W. Lobb). 



Bulimus purpuratus REEVE, P. Z. S., 1849, p. 98 ; Conch. Icon., 

 pi. 71, f. 517. PFR., Monogr., iii, p. 417. 



B. WEDDELLI (Hupe). PI. 3, figs. 32, 33 ; pi. 8, figs. 23, 24. 



Shell oblong acuminate, sub ventricose ; ashy irregularly banded 

 with somewhat squarish brown spots, here and there blotched with 



