228 DRYM^EUS, SOUTH AMERICAN. 



conic, acute ; whorls 6, a little convex, the last longer than the 

 spire, somewhat inflated. Aperture slightly oblique, acuminate- 

 oval; peristome thin, expanded, the margins nearly contiguous, 

 joined by a thin callus, right margin dilated in the middle, colum- 

 ellar margin very much dilated. Alt. 39, diam. 19 mill. ; aperture 

 with peristome 23 mill, long, 16 wide (P/V.). 



Andes of Peru (Keppell, in Cuming coll.). 



Bulimus excoriatus PFR., P. Z. S., 1854, p. 123 ; Monogr., iv, p. 

 395. 



Group of D. strigatus. 



D. STRIGATUS (Sowerby). PL 42, figs. 39-52. - 



Shell broadly and openly rimate, ovate-conic, moderately solid ; 

 white or light brown, unicolored or with continuous or interrupted 

 bands, or oblique stripes or streaks. Shining, with slight growth* 

 lines and very minute spiral impressed striae, the latter generally 

 subobsolete. Spire conic, varying a good deal in alt., apex obtuse, 

 often black-tipped. Whorls 5 to 6J, the earlier 1 with minute 

 typical Drymceus sculpture, the rest convex, last whorl well rounded, 

 slightly ascending in front, very convex below, excavated around the* 

 umbilical chink. 



Aperture short, oval, varying from distinctly to but slightly 

 oblique, showing the external coloring within, but becoming purple- 

 tinged toward the lip, inside of which there is a purple streak ; per- 

 istome white, rather flatly reflexed throughout, the terminations ap- 

 proaching ; outer lip decidedly arcuate near its upper insertion, col- 

 umellar lip dilated. 



Alt. 2U, diam. 12 ; alt. of aperture 10 mill. 



Alt. 19, diam. 11 ; alt. of aperture 9? mill. 



Alt. 23, diam. 11 ; alt. of aperture 11 mill. 



Peru : Huallaga [river ?] (Sowerby) ; Maynas (Acad. coll.) ; 

 Moyobamba (Yates) ; banks of Ucayali jR. (Ortou). 



Bulinus strigatus SOWERBY, Conch. Illustr., f. 95, 96. Bulimus 

 strigatus PFR., Monogr., ii, p. 601. REEVE, Conch. Icon., pi. 83, f. 

 613 (not pi. 44, f. 280). Bulimus saccatus PFR., P. Z. S., 1855, p. 

 94, pi. 31, f. 2 ; Novit. Conch., p. 65, pi. 18, f. 9-12 ; Monogr., iv, 

 p. 385. CROSSE, Journ. de Conch., 1871, p. 317. DOHRN, Jahrb. 

 d. D. M. Ges., 1882, p. 107 (unites musivus and saccatus'). Bulimus 

 musivus PFR., P. Z. S., 1855, p. 95, pi. 31, f. 3 ; Novit. Conch., p. 65, 



