224 DRYM^US, SOUTH AMERICAN. 



like rib-strise 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. (ff. Ad.}. 



Eastern Peru (Bartlett). 



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

 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 6, the 



