BULIMULUS-BOSTRYX-PERON^US. 139 



weakly convex, the last three of about the same diameter, those 

 above tapering to a slightly mamillar, obtuse, glossy apex; last 

 whorl tapering and somewhat compressed toward the base with a 

 small umbilical excavation. 



Aperture slightly over one-fourth the total altitude, oblique, 

 ovate ; peristome obtuse, the outer lip regularly arcuate, distinctly 

 expanded or spreading below ; columellar lip expanded ; ends con- 

 nected by a white parietal callus. 



Alt. 20, diam. 5*8 mill. ; alt. of aperture 5'3 mill. (Specimen). 



Alt. 18, diam. 5 mill. 



Alt. 22, diam. 6 mill. ; alt. of aperture 6 mill. (Pfr.). 



Huasco (Cuming) and Coquimbo (Paz & Martinez), Chili. 



Bulinus pupiformis BROD., Proc. Zool. Soc., 1832, p. 105. SOWB., 

 Conch. Illustr., f. 27. Bulimus pupiformis PFR., Symb., ii, p. 49; 

 Moiiogr., ii, p. 113. HUPE, in Gay, Historia de Chile, viii, Mala- 

 cologia p. 114, pi. 2, f. H. HIDALGO, Moluscos Viaje al Pacif., p. 

 99.? REEVE, Conch. Icon., pi. 14, f. 85. 



Allied to B. atacamensis, but with wider and more dilated aper- 

 ture. 



B. ANACHORETA Pfeiffer. PI. 45, figs. 11, 12, 13, 14. 



Shell nearly covered rimate, fusiform-turrited, rather solid, smooth. 

 White, sparingly variegated with tawny streaks. Spire convex- 

 turrited, the apex rather acute, suture very superficial. Whorls 10, 

 nearly flat, the last scarcely exceeding one-third the length of shell, 

 attenuated at base. Columella somewhat straightened. 



Aperture oblique, subrhombic-oval, white inside ; peristome white- 

 lipped within, the outer margin acute and narrowly expanded, 

 curved above and then a little straightened; columellar margin 

 dilated, reflexed and subadnate. Alt. 22, diam. 7i mill. ; aperture 

 (with peristome), alt. 8 mill. (Pfr.}. 



Paposo, Atacama desert, Chili (Philippi, Paz). 



B. anachoreta PFR., Malak. Bl., iii, 1856, p. 208 ; Monogr., iv,p. 

 422; Novit. Conch., iii, p. 376, pi. 87, f. 21, 22. PHILIPPI, Reise 

 durch Wuste Atacama, p. 184, pi. 7, f. lla, b. HIDALGO, Journ. 

 de Conchyl., 1870, p. 56. 



According to Philippi, the diameter varies considerable, from 2 

 to 3? lines; and the thickness of the callus within the lip also is 

 variable. His figures illustrating variation are reproduced in f. 13, 

 14. 



