BULIMULUS-BOSTRYX-GEOCERAS. 137 



Anile* of Cn.nniKiri-n (=Catamarca), under stones, 12,000 ft. alt. 

 (W. Lobb) ; on the A/niri/nne Jiin-r, 70 lent/in:* from Cocabambilla, 

 at bases of cacti growing in rock crevices (Angrand). 



I In /him* en/ii me//</ rix REEVE, P. Z. S., 1849, p. 100 ; Conch. Icon., 

 pi. 73, f. 528. PFR., Monogr., iii, p. 403. MORELET, Ser. Conch., 

 iii, p. 211. Cure/in ro/niue//<ir!x PFR., olim ; Sjiirn.rl* co/unie//<tr!x 

 PFR., Monogr., iv, p. 572 ; Nomencl. Hel. Viv., p. 323. Snfui/imi 

 colniiirl/urix H. & A. Ad., Gen. Rec. Moll., p. 111. Mcroeer<nintx 

 (Anomct) colni>ie//<tri* MART., Die Hel. (2), p. 270. 



B. CUSPIDATUS Morelet. PI. 45, fig. 7. 



Shell im perforate, cylindrical, smooth, whitish, obliquely streaked 



with reddish. Spire elongated, forming an acute cone above. 



Whorl* 16, scarcely ro/m-.r, the last scarcely wider than the penulti- 



mate, with close, sometimes confluent streaks, and obtusely angular 



below the middle. 



Aperture small, oblong, subangular ; peristome simple, unex- 

 pauded ; columellar margin very narrowly dilated and appressed. 

 Columella nearly straight, narrow. Alt. 30, diarn. 5 mill. (More/.). 



Bank* of Apur'nnnr Hirer nt Cocabambilla uml in the f/ori/ex oj 

 Clwe/injioi/as, at the bases of cacti of the genus Cerent (Angrand). 



B. cuspidatus MOREL., Ser. Conch., iii, p. 210, pi. 11, f. 7 (April, 

 1863). PFR., Monogr., vi, p. 91. Rnmina (Obeliscu*) c>i*i>i<ltti( 

 PFR.-CLESS., Nomencl. Hel. Viv., p. 318. 



This species is one of a peculiar group, confined to Peru, and re- 

 sembling Cylindrella except in the aperture. The 7 or 8 earlier 

 whorls form an acute cone ; the rest are of nearly equal caliber, 

 forming a cylinder ; on the last there is an obtuse angle which is 

 obsolete on the latter part. The surface appears smooth and shin- 

 ing, but with a lens superficial growth-stride are readily seen. 



B. VERUCULUM Morelet. PL 45, fig. 8. 



Shell subiniperforate, cylindrical, arctispiral, rather thin and 

 smooth, shining, corneous-white, generally banded with reddish. 

 Spire long, perceptibly tapering, brownish above. Whorls 19, 

 nearly Hat, the last c<irin<ite<i, tlte baxe flat or concave. 



Aperture ovate-rounded, vertical, scarcely exceeding one-seventh 

 the total length ; peristome unexpanded, the right margin arcuate, 

 columellar margin narrowly expanded, dilated and somewhat ap- 

 pressed above. Alt. 24, diam. 4? mill. (Morel.). 



Variety : pale corneous, streaked lengthwise with reddish. 



Balsa de Cocharcas, Pern (Angrand). 



