DRY1VLEUS, SOUTH AMERICAN. 303 



individuals they would be overlooked. D. oreades Orb. has a 

 somewhat similar but more developed color-pattern. In D.feriatus 

 Reeve, there is a similar basal band, but the aperture is much 

 larger. D. roseatus also has a longer last whorl and aperture. 

 The type of B. lacteus has been lost from the Lea collection. 



D. MERIDANUS (Pfeiffer). PI. 45, fig. 26. 



Shell perforate, oblong-subfusiform, striatulate, smooth ; buff- 

 whitish, ornamented with narrow blue-brown or wide chestnut 

 bands interrupted by streaks ; spire turrited-conic, rather acute. 

 Whorls 6, a little flattened, the last as long as the spire. Columella 

 lightly arcuate ; aperture oblong-oval, colored within like the out- 

 side; peristome simple, the right margin narrowly expanded, colu- 

 niellar margin dilated, overhanging, reflexed, white ; nearly closing 

 the perforation. Alt. 29, diam. 11 ; alt. of aperture 15 mill. (Pfr.*). 



Merida, Venezuela (Mus. Cuming). 



Bulimus meridanus PFR., P. Z. S., 1846, p. 33 ; Monogr., ii, p. 

 103. REEVE, Conch. Icon., pi. 57, f. 386. 



Pfeiffer assigned this species to " Merida, Bolivian Andes ; ' 

 Reeve to Merida, New Granada, now in Venezuela. Von Martens 

 unites B. primula Rve. as a synonym, but not from having seen 

 specimens, apparently. Pfeiffer observes in the Monographia 

 " compare B. amwnus Pfr." 



D. DESHAYESI (Pfeiffer). PI. 45, fig. 27. 



Shell umbilicate, turrited, solid, striatulate ; violaceous-white, ir- 

 regularly marked with streaks and spots of purple brown. Suture 

 somewhat crenulate; whorls 9, a trifle convex, the last nearly one- 

 third the total alt. Columella nearly straight, aperture oval, vio- 

 laceous within ; peristome simple, uuexpanded, the columellar mar- 

 gin dilated, reflexed, overhanging, not closing the umbilical crevice. 

 Alt. 45, diam. 15, alt. of aperture 16 mill. 



Venezuela (Dyson). 



Bulimus deshayesi PFR., P. Z. S., 1845, p. 73 ; Monogr., ii, p. 

 200; vi, 128. REEVE, Conch. Icon., pi. 40, f. 250. 



D. DUBIUS (Pfeiffer). 



Shell subperforate, oblong- fusiform, thin, striated, a little shining ; 

 whitish-buff, ornamented with spadiceous, somewhat undulating 

 streaks; spire slender, long-conic, the apex rather obtuse, suture 

 submarginate, Whorls 6, slightly convex, the last a Jittle shorter 



