STROPHOCHEILUS-THAUMASTUS. 61 



well reflexed, openly vaulted over umbilicus, widened above, not in 

 the least folded ; parietal callus slight. 



Alt. 61, diam. 27 ; alt. of aperture 29 mill. 



Alt. 56, diam. 25 mill. 



Andahuaylas in rock-crevices (Angrand) and Lima (Bland), 

 Per 1 1 ; (Bo livia /) . 



Bulimus porphyrim PFR., P. Z. S. 1846, p. 114. REEVE, Conch. 

 Icon. pi. 15, f. 89a, b. HUPE in Castelnau's Exped. Moll. p. 31, pi. 

 5, f. 2. B. porphyreus PFR., Monogr. ii, p. 199 ; iii, p. 425, etc. 

 MORELET, Ser. Couch, iii, p. 173. HIDALGO, Viaje al Pacif., Mol. 

 p. 65. MARTENS, Conchol. Mittheil. iii, p. 11, pi. 40, f. 11, 12. 



The rudely wrinkled surface, open umbilical perforation and 

 peculiar sculpture of early whorls are characteristic. The structure 

 of the columella is quite different from that of S. achilles, to which 

 this species is not much allied. 



5. JASPIDEUS Morelet. PL 29, fig. 17. 



Shell narrowly umbilicated, oblong-oval, moderately solid, 

 wrinkle-striated, irregularly granulate and marked with a few con- 

 centric lines. Longitudinally streaked and variegated with whitish 

 and corneous. Spire convex-conic the apex rather acute. Whorls 



6, slightly convex, plicate-crenulate at the sutures, the last whorl 

 shorter than the spire. 



Aperture vertical, ovate ; peristome somewhat thickened, unex- 

 panded, the right margin regularly arcuate; columellar margin 

 dilated, spreading. Alt. 37-47, diam. 18-21 mill. (Morel.}. 



Valley of Yucai; around Huancabelica, on garden walls (All- 

 grand). 



Bui. ja&pid eus MOREL., Ser. Conch, iii, p. 180, pi. 7, f. 7. PFR. 

 Monogr. vi, p. 142. 



