BULIMULUS-BOSTRYX-LISSOACME. 191 



Bulimulus (Scittahts) stelzneri DOHRN, Malak. Bl., xxii, p. 202 

 (1875); again iu xxiv, 1877, p. 157. KOBELT, Jahrb. D. M. Ges., 

 y, 1878, p. 149, pi. 6, f. 7. PFR., Monogr., viii, p. 58 ; Novit. Conch. 

 v, p. 164, pi. 137, f. 8-10. DOERING, Bol. Acad. Nac. Cien. Rep. 

 Argent., iii, 1879, p. 66. 



Nearest to B. proteus and derelictus in form, and showing the same 

 range of variation in size and shape, but differing from both in 

 sculpture, thinness, and formation of the umbilical region. (Dohni). 



* 



B. MONTICOLA Doering. 



Shell perforate, ovate-conic, thin, little shining, pellucid-corneous 

 or reddish-corneous (sometimes ornamented with obscure, brownish 

 longitudinal bands), variegated with close, opaque-whitish, wrinkled, 

 elevated and very irregular stria?. Spire conic, apex rather acute. 

 Whorls 6, a little convex, the first buff, smoothish, the last more 

 swollen, over one-half the entire length. 



Aperture oblong-ovate ; peristome simple, thin, acute ; right mar- 

 gin regularly arcuate ; columellar margin reflexed, half closing the 

 perforation. Alt. 13-17, diam. 7-9 mill.; aperture 7-9 mill, long, 

 4-5 wide. (Doer.'). 



Sierra de los Granadillos, prov. Catamarca, and on the styles of 

 Tocina, Sierra de Famatina, at 3300-4000 meters alt. ; darker form 

 from la Quebrada de S. Isidro, prov. Mendoza, Argentina (Stelzner). 



Bulimulus monticola DOER., Bol. Acad. Nac. Cien. Rep. Argent., 

 iii, p. 69 (not Bnlimus monticola Phil., Mai. Bl., 1863, p. 33, see 

 p. 187, nor Bulimus monticola Roth a Buliminus). 



Jaw with 8 thick riblets, the median ones much narrower. Teeth 

 in straight transverse series, relatively large and separated, and com- 

 paratively few in number. 



The species lives only at considerable altitudes. 



B. CORDILLERA Strobel. PI. 51, figs. 5, 6, 7. 



Shell covered-perforate, oblong-turrited, rather thin ; spire turrited, 

 the apex rather obtuse, suture impressed. Whorls 6, moderately con- 

 vex, the first smooth, shining, violaceous, brown or tawny, the rest 

 sculptured with delicate growth-stride, somewhat shining, whitish 

 with longitudinal corneous rays ; last whorl not descending, more 

 than a third the shell's length. 



Aperture slightly oblique, oval ; peristome simple, acute, the mar- 

 gins remote, outer margin unexpanded, columellar reflexed, almost 



