STROPHOCHEILUS-THAUMASTU8. 45 



yellowish band, the periphery encircled by a dark girdle between 

 two yellowish bands. Surface somewhat shining, irregularly 

 wrinkled by growth-striae, and having some spaced spiral series of 

 granules on the upper of the body-whorl, more or less distinct on 

 earlier whorls ; the nepionic shell minutely and closely vermiculate- 

 striate. Spire lengthened, regular, having a moderately impressed 

 suture margined below by a puckered or crenulate border; whorls 

 a trifle over 6, the first forming a planorboid obtuse apex, the 

 rest gently convex ; latter half of last whorl obliquely descending. 



Aperture ovate, whitish-brown and lustrous within ; peristome 

 slightly expanded, ivith a wide thickened black-brown rim within ; 

 columellar margin dark brown, reflexed, widened above vaulted over 

 the large, open perforation, with an oblique, feebly convex, long 

 entering fold. Parietal wall covered with a rather thick dark 

 callus. Alt. 80, diam. 38-40 mill. ; alt. of mouth 40 mill. 



" Pampas of South America " (Nyst.) ; Andes of Peru (Swift) ; Par- 

 aguay (Reeve). 



Bulimus melanocheilus NYST, Bull, de 1'Acad. Roy. de Sci. et 

 Belles-Lettres de Bruxelles, xii, pt. 2, p. 149, pi. 2, f. 3a, 36. PFR., 

 Monogr. ii, p. 141. REEVE, Conch. Icon. pi. 28, f. 172. B. melano- 

 chilits Auct. 



Differs from other species of the group in its open umbilicus, dark 

 peristome, etc. Fig. 62 is a copy of that of Nyst. Fig. 63 repre- 

 sents one of the specimens before me, showing the bands much more 

 distinctly. Xo exact localities for the species seem to be recorded. 



S. SANGO.E Tschudi. PI. 24, figs. 64, 65. 



Shell perforate, conic- turrited, the last whorl rapidly increasing, 

 convex. Upper whorls striolate, lower striated, the body-whorl sub- 

 cancellated and somewhat beaded. Reddish-brown with a reddish- 

 yellow band following the sutures, continuing on the body-whorl. 

 [There are two bands : one subsutural, the other at periphery ; the 

 latter being covered on whorls of spire]. 



Aperture acutely ovate, scarlet-reddish ; peristome simple, acute, 

 blackish, the columellar margin shorter, impressed, dilated. 



Alt. 81, diam. 40 mill; whorls 6. (Tschudi). 

 Sangoa, Peru, in primaeval forest (Tschudi) ; Amable Maria (Jehki). 



Bulimus sangoce TSCHUDI, in Troschel, Archiv fur Naturg. xviii, 

 1852, p. 189, pi. 6, f. 1. PFR., Monogr. iii, p. 317. LUBOMIRSKI, 

 P. Z. S. 1879, p. 721. 



