182 BULIMULUS-BOSTRYX-LISSOACME. 



having narrow chestnut bands, and brown around the umbilicus. 

 Morelet considers it a form of B. nigropileatus, but he had seen 

 neither species. 



B. NIGROPILEATUS Reeve. PL 47, fig. 84. 



Shell perforate, oblong-turrited, rather solid, subrugose-striate, 

 white. Spire long-conic, the rather obtuse apex black or corneous. 

 Whorls 7, slightly convex, the last a little shorter than the spire, 

 usually with an interrupted brown band below the middle. Col- 

 umella slightly arcuate. Aperture a little oblique, oblong-oval, 

 brownish inside; peristome simple, unexpanded, the columellar mar- 

 gin dilated and broadly reflexed above. Alt. 21, diam. 9 mill. ; 

 aperture 9s mill, long, 5 wide. (Pf>*-)- 



Chachapoyas (Lobb), and Chota (Stolzmann) Peru. 



Bulimus nigropileatus RVE., P. Z. S., 1849, p. 97 ; Conch. Icon., 

 pi. 73, no. 525, f. 524. PFR., Mouogr., iii, p. 427 ; vi, 137. LUBO- 

 MIRSKI, P. Z. S., 1879, p. 723. 



B. STENACME Pfeiffer. PI. 49, figs. 32, 33. 



Shell umbilicate, ovate-turrited, rather solid, rugulose striate ; 

 whitish, generally variegated with narrow, pale corneous streaks. 

 Spire long, attenuated toward the somewhat acute apex. Whorls 

 7-8, slightly convex, the last about equal to two-fifths the alt., some- 

 what compressed around the narrow umbilicus. 



Aperture oblique, oblong-oval, brown-fleshy inside; peristome 

 simple, unexpanded, the columellar margin dilated above, vaulted 

 and reflexed. Alt. 202-28, diam. 9-11 mill.; length of aperture 

 9-11, width 5-7 mill. (Pfr.). 



Patas (Farris), and Tarma (Isern), Peru. 



BuUmm stenacme PFR., P. Z. S., 1856, p. 333; Monogr., iv, p. 

 492; Novit. Conch., iii, p. 464, pi. 101, f. 12, 13 ("steuaeme" on 

 plate). HIDALGO, Journ. de Conchyl., 1875, p. 130 ; Viaje al Pacif. 

 p. 131. 



The figures do not well show the character of the spire, attenuated 

 toward the apex. 



B. RADIATUS Morelet. PI. 49, figs. 25, 26. 



Shell rimate, ovate-turrited, thin, little shining, obsoletely and 

 irregularly costulate-striate ; whitish with isolated reddish streaks 

 and a very few blackish dots. Spire elongated, the apex acute, 



