1 90 BULIMULUS-BOSTRYX-LISSOACME. 



expanded. Length 21-24, diara. 13-16J; aperture 12-14 mill, 

 long, 8-9 wide. (JDovring). 



Sierra of Tucuman, Argentina (Hieronyraus). 



Scutalus conospirus D., Bol. Acad. Nac. de Cien. Rep. Argent., 

 iii, 1879, p. 67. 



Jaw with 12 riblets, those at the ends wider, all somewhat prom- 

 inent at the lower edge. Teeth of radula in approximately straight 

 series, as in the typical Bulimuli. 



Var.fasdata. With obsolete and interrupted pale brown, trans- 

 lucent spiral bands. 



B. OXYLABRIS Doering. 



Shell rimate, conic-oblong, subfusiform, irregularly rugose-striate, 

 rather smooth ; opaque-whitish ; spire oblong-conic, the apex pale 

 corneous, rather obtuse. Whorls 6, moderately convex, the last 

 about four-ninths the total alt. Columella obsoletely plicatulate. 

 Aperture subvertical, oval, slightly yellowish inside, shining ; per- 

 istome simple, unexpanded, acute ; columellar margin reflexed, 

 broad, half closing the perforation. Length 17-20, diam. 9-10; 

 aperture, length 9-10, width 42-5 mill. (Doer.*). 



First Sierra of Cordoba, particularly in the calcareous regions at la 

 Calera, San Antonio, Maldonado, Alia Gratia, Argentina. 



Scutalus oxylabris DOERING, Bol. Acad. Nac. Cien. Rep. Argent., 

 iii, p. 65 (1879). 



Jaw with 12-15 riblets. B. oxylabris differs from.B. peristomatus 

 in the smaller size and elongate shape, the unexpanded peristome, 

 more acute and not reflexed. 



B. STELZNERI Dohrn. PI. 51, figs. 20, 21, 22. 



Shell profoundly rimate, ovate-conic, rather thin, densely and irre- 

 gularly rugose-striate ; dull whitish ; apex minute, smooth ; spire 

 conic ; whorls 5-6, moderately convex, the last longer than the spire, 

 effuse in front ; columella deeply and obsoletely folded. Aperture 

 subvertical, oval, whitish within and shining ; peristome simple, the 

 right margin slightly expanded, basal margin dilated, narrowly ex- 

 panded; columellar margin dilated, wide. Length 23-28, diam. 

 14-20; alt. of aperture 13-18, width 8-11 mill. (Dohrn). 



Argentina, at " Cerro de Chepe " (Stelzner) ; Sierra de Catamarca 

 (Jacotula) at about 2000 meters alt. (Doring). 



