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. PI. 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 9? mill, long, 5 wide. (Pfr.). 



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



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

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

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



B. STENACME Pfeiffer. PL 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. 20-1-28, diam. 9-11 mill.; length of aperture 

 9-11, width 5-7 mill. (P/r.). 



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



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

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

 to ward -the apex. 



B. RADIATUS Morelet. PL 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, 



