170 NEOPETR^EUS. 



the peristome converge strongly, and the umbilicus is deep and 

 widely open. The surface is grooved with very wide superficial 

 strise, more numerous and stronger on the early whorls ; and with 

 sufficient magnification, short concentric impressions crossing the 

 strise may be seen in some places. 



N. CATAMARCANUS (Pfeifferj. PL 29, fig. 21. 



Shell profoundly umbilicate, ovate-conic, rather solid, irregularly 

 plicate and minutely granulate throughout, not shining, whitish ; 

 spire conic, rather obtuse ; whorls 6, convex, the last longer than 

 the spire, ascending in front, rounded at base ; columella deeply and 

 obsoletely folded. 



Aperture vertical, oblong-oval; peristome simple, the margins 

 approaching, the right margin passing outward horizontally from 

 the upper insertion, broadly expanded ; columellar margin very 

 much dilated and spreading. Alt. 42, diam. [excluding expansion 

 of lip] 23 mill, ; aperture with peristome 27 mill, long, 13 wide. 



Andes of the province Caxamarca, Peru (Williams ; Cuming 

 coll.). 



Bulimus catamarcanus PFR., P. Z. S., 1858, p. 256, pi. 42, f. 5 ; 

 Malak. BL, 1859, p. 58; Monogr. Hel. Viv., vi, p. 4l.Bulimu* 

 caxamarcanus MOREL, Ser. Conchyl., iii, p. 158. 



Closely allied, it would seem, to N. millegranus, but with the outer 

 lip near its insertion straightened and the columellar lip straight and 

 vertical, and without the color-pattern of that species. 



N. MILLEGRANUS (v. Martens). PL 31, figs. 24, 25, 26, 27. 



Shell umbilicate, ovate-pyramidal, thin, sculptured with rather 

 close spiral series of granules ; whitish, painted with irregular, more 

 or less streak-like brown spots arranged in 4 or 5 spiral series. 

 Whorls 6j, the first and second constituting a papillar apex, shin- 

 ing, white and sculptured with fine vertical ribs ; third and fourth 

 rapidly increasing, flat, with very oblique, granulose riblets, the 

 suture flat; penultimate whorl a little convex, last whorl rounded 

 basally. 



Aperture subvertical, four-sevenths the shell's length, widely 

 elliptical; peristome broadly expanded, white, rather thin, the con- 

 verging margins separated. Alt. 43, greatest diam. exclusive of 



