278 BRYM.EUS, SOUTH AMERICAN. 



Aperture wide, oblong, the peristome thin and acute ; columella 

 narrow, subtruncate below. Alt. 25, diam. 1] mill. (Orb.). 



Bolivia : Near Cavari, province of Sicasica (typical form) and on 

 the Rio de Meguilla, between the villages of Lauza and Carcuatu, 

 province of Yungas (variety), under dead leaves in stony places. 

 (Orb.). 



Helix paziana ORB., Mag. de Zool., 1835, p. 12 ; Voy. Amer. 

 Me"rid., pi. 32, f. 10, 11. Bulimus pazianus ORB., t. c., p. 286. 

 PFR., Monogr., ii, p. Ill ; iv, 471 ; vi, 115. REEVE, Conch. Icon., 

 pi. 56, f. 377. 



Allied to D. montagnei and D. torallyi but more fusiform, with 

 more acuminate spire, more conic though relatively not so long, etc. 



The typical form is iraperforate, with the characters described 

 above. A local variety from the coteaux of the Rio de Meguilla is 

 distinctly umbilicate, with the aperture less fusiform and a little 

 angular. 



Pfeiffer also places here the Bulimus montagnei of Reeve (not 

 Orb.). It seems to form a distinguishable variety at least. 



Var. pseudonyma n. n. PI. 44, fig. 6. 



Shell acuminately oblong, rather thin, scarcely umbilicated ; 

 whorls 7, smooth, somewhat rounded ; lip simple. Whitish, painted 

 longitudinally with bluish-black dots and streaks; interior of the 

 aperture yellowish. (Rve.). Alt. 19 mill, (from fig.). 



Chilon, Bolivia, under dead trunks of cacti (Bridges). 



'Bulimus montagnei REEVE, Conch. Icon., pi. 23, f. 146. Not of 

 Orb. 



D. TORALLYI (Orbigny). PI. 44, figs. 97, 98, 99, 1, 2, 3. 



Shell elongate, pyramidal, quite thick, smooth, glossy, noticeably 

 transparent. Color various: (1) entirely whitish, (2) whitish with 

 the umbilicus and apex blackish, having wide red brown longitu- 

 dinal flames, unequally spaced, sometimes represented by series of 

 small spots ; these flames, in others form very distinct bands ; the 

 interior of the aperture generally brownish. Spire lengthened, with 

 noticeably convex lateral outlines, the apex acute ; whorls 8, wide, 

 but little convex, separated by shallow sutures. Aperture small, 

 oblong, subangular; the columellar margin straight and flat ; per- 

 istome acute. Columella not appressed, but leaving the beginning 

 of a narrow umbilicus. Alt. 31, diam. 11 mill. (Orb.). 



