DRYM.EUS, SOUTH AMERICAN. 193 



alt. 47, diam. 21, alt. of aperture 25 mill., and has 7 slightly convex 

 whorls. 



D. BOLIVARII (d'Orbigny). PI. 37, figs. 1, 2. 



Shell oblong, ventricose, thick, covered with small longitudinal 

 depressions which lattice the surface ; soiled white with some light 

 brown marbling and ornamented with three interrupted bands of 

 deep brown, formed of oblong spots, the apex deep yellow ; spire a 

 little inflated, apex acute; composed of 7 slightly convex whorls 

 separated by a shallow suture, the last whorl a little oblique, form- 

 ing two thirds the entire length. Aperture very large, oblong, ob- 

 lique, white within and showing the bands by transparence ; the 

 peristome deep yellow, thick, flattened and strongly reflexed ; col- 

 umella solid, very wide, a little twisted and strongly flattened. Alt. 

 54, diam. 26 mill. (Orb.'). 



Northeastern slope of the eastern Cordillera of Cochabamba, Boli- 

 via, at a place called Seja del Monte, in the country of the Yuracari 

 Indians. 



Helix bolivarii ORB., Mag. de Zool., 1835, p. 17. Bulimus boli- 

 varii ORB., Voy. Amer. Merid., p. 309, pi. 39, f. 5, 6. PFR., Monogr., 

 ii, p. 55 ; iii, 331 ; iv, 393 ; vi, 39. Bulimulus bolivarii BECK, Index, 

 p. 64. 



D. BRACHYSTOMA (d'Orbigny). PI. 37, figs. 7, 8. 



Shell oblong, rather short, inflated, somewhat thick, smooth ; the 

 single somewhat weathered individual of a dirty white, marbled or 

 clouded throughout with reddish-brown, slightly darker markings 

 indicating three transverse bands. Spire short, slightly inflated, 

 acute at the apex, composed of 7 perceptibly swollen whorls, the last 

 somewhat exceeding one-half of the shell's length. Aperture oval, 

 wide, short in comparison to the other species of this series, its width 

 two-thirds its length, slightly oblique; columella straight, much 

 flattened over the slight umbilicus ; peristome thin, strongly reflexed 

 and wide. Alt. 40, diam. 19 mill. (Orb.). 



Forests of the eastern foothills of the Bolivian Andes, 20 leagues 

 west of Santa Cruz de la Sierra. 



Helix brachystoma ORB., Mag. de Zool., 1835, p. 18. Bulimus 

 brachystoma ORB., Voy. Araer. Merid., p. 309, pi. 39, f. y, 10. PFR., 

 Monogr., ii, p. 46. 



More inflated and shorter than D. bolivarii, and of smoother tex- 

 ture. 



13 



