DRYM^US, SOUTH AMERICAN. 245 



last a little longer than the spire, attenuated basally. Columella 

 somewhat straightened, receding. Aperture oblique, narrow, acum- 

 inate-semioval ; peristome simple, thin, buff, the right margin 

 broadly expanded ; columellar margin triangularly dilated from the 

 base, broadly reflexed above. Alt. 37, diara. 13 mill. ; aperture 

 20 mill long. (P/r.). 



Bolivian Andes (Pfr.) ; Moyobamba region, eastern Peru (Stiibel). 



BuUmus subinterruptus PFR., P. Z. S., 1851, p. 256 ; Conchyl. 

 Cab., p. 80, pi. 21, f. 20, 21, and var.,f. 22, 23 ; Monogr.,iii, p. 333. 

 Otostomus (Drymceus) subinterruptus MARTENS, Couchol. Mit- 

 theil., p. 160. 



Pfeiffer refers to this species, as a variety, a form (pi. 41, figs. 29 

 30) which is smaller, with wider aperture, the columellar margin 

 less receding, more narrowly reflexed. It is probably an imperfectly 

 developed shell. 



D, L^TUS (Reeve). PI. 43, fig. 72. 



Shell perforate, conic-oblong, rather thin, smoothish, shining; red- 

 dish, with longitudinal pale lines and three butf-white bands ; spire 

 conic, a little obtuse. Whorls 5, slightly convex, the last a little 

 shorter than the spire, rotund at base ; columella plicate above, ar- 

 cuate, roseate. Aperture slightly oblique, oval ; peristome thin, 

 roseate, the right margin slightly arcuate, columellar margin re- 

 flexed, dilated above. Alt. 25, diam. 11 mill. , aperture (measured 

 inside) 12 mill, long, 6f wide in the middle. (Pfr.). 



Sebundoi, northern Ecuador (Cuming coll.) ; Pasto, southern Co- 

 lombia (Lehmann). 



BuUmus lodus REEVE, Conch. Icon., pi. 83, f. 616 (Dec., 1849). 

 PFR., Monogr., iii, p. 343. DUNKER, Jahrb. D. Mai. Ges., 1882, 

 ix, p. 380. Drymceus Icetus DOHRN, Jahrb. D. Mai. Ges., vii, p. 88. 



D. TRIVITTATUS (Mousson). PI. 43, figs. 67, 68. 



Shell subperforate, ovate-fusiform, rather solid, striatulate, irreg- 

 ularly malleated, shining; white, with three wide brown-black 

 bands, the upper one interrupted or ragged. Spire long, conic, reg- 

 ular ; apex small, white; suture little impressed, sublinear. Whorls 

 6-j, a little convex, showing two bands; the last whorl gently as- 

 cending a little in front, lengthened, expanded toward the margin, 

 tapering below, rounded at the region of the perforation. 



