224 DRYM^US, SOUTH AMERICAN. 



like rib-striae with fine, faint spirals between them ; apex light, or 

 black tipped. Aperture vividly showing the external markings in- 

 side, the peristome lilac-pink, fading to white at the outer edge. 

 Whorls 6; alt. 30, diam. 15, length of aperture 17 mill. 



Possibly identical with Sowerby's B. pulchellus var., Conch. 

 Illustr., f. 92, but the specimens before me have a different color 

 pattern. 



D. SCITUS (H. Adams). PI. 32, fig. 45. 



Shell rimate-perforate, ovate-pyramidal, rather thin, irregularly 

 somewhat wrinkled striate, and obsoletely decussated with minute 

 spiral lines; buff-white, sparsely ornamented with interrupted brown 

 bands and spots. Spire conic, the apex acute. Whorls 6, rather 

 flat, the last a little longer than the spire; rotund, compressed at base, 

 obtusely carinated around the perforation. Columella twisted. 

 Aperture vertical, wide, rounded or ear-shaped, violet colored in- 

 side; peristome simple, broadly expanded throughout. Alt. 28, 

 diam. 17 mill. (H. Ad.). 



Eastern Peru (Bartlett). 



Otostomus scitus H. AD., P. Z. S., 1866, p. 442, pi. 38, f. 5. Bull- 

 mus scitus PFR., Monogr.. viii, p. 55. 



Dohrn considers this a synonym of D. expansus. 



D. BARTLETTI (H. Adams). PI. 32, fig. 44. 



Shell umbilicate, globose-conic, rather thin, irregularly striated 

 and closely decussated with very minute spiral lines; whitish, 

 painted with an interrupted, white dotted, chestnut band and brown 

 flames. Spire conic, a little obtuse. Whorls 5, rather flattened, 

 the last ventricose, ascending, a little longer than the spire, obtusely 

 keeled at base. Aperture subvertical, oblique, suboval ; peristome 

 thin, broadly expanded throughout. Alt. 25, greatest diam. 26, 

 least 18 mill. (H.Ad.\ 



Eastern Peru (E. Bartlett). 



Otostomus bartletti H. AD., P. Z. S., 1866, p. 442, pi. 38, f. 4. 

 D. PROTRACTUS (Pfeiffer). PI. 42, figs. 61, 62. 



Shell deeply and widely rimate-perforate, oblong pyramidal, 

 rather thin, pale buff or almost white, uniform or with longitudinal 

 light brown streaks, narrow and subobsolete on the body whorl, the 

 apex black ; surface somewhat shining, closely and rather coarsely 

 striated. Spire long conic, the apex rather obtuse ; whorls 6J, the 



