DRYBLU8, SOUTH AMERICAN. 211 



Bulimus signifer PFR., Proc. Zool. Soc. Lond., 1855, p. 8 ; Mon- 

 ogr., iv, p. 393. 



Similar to B. yungasensis Orb. or papyraceus Mawe (Pfr.). It 

 has not been figured. 



D. FELIX (Peiffer). PI. 35, fig. 20. 



Shell compressed umbilicate, ovate-oblong, thin, smooth ; whitish 

 or flesh colored, ornamented with reddish streaks or wide bands, 

 dotted with white ; spire convex conic, the acute apex blackish. 

 Whorls 6, a little convex, the last about as long as the spire, some- 

 what ascending in front, attenuated at base. Columella somewhat 

 twisted, receding, brownish-purple. 



Aperture sub vertical, oval, violet edged inside ; peristome simple, 

 white, the margins joined by a chestnut callus, right margin widely 

 expanded. Coluraellar margin broadly reflexed. Alt. 33, diam. 13 

 mill.; aperture with peristome 17i mill, long, 12 wide (Pfr.), 



United States of Colombia (Cuming Coll.), road from Llanos of 

 St. Martin, and low land and in forest at Lebonday, 2,100 meters 

 alt. (Stiibel). 



Bulimus felix PFR., P. Z. S., 1861, p. 387, pi. 37, f. 2 ; Monogr. vi, 

 p. 36. Otostomus (Drymceus') felix MARTENS, Conch. Mittheil., p. 

 160. 



Pfeiffer describes a variety, shell more slender, whitish, with sparse 

 streaks of pale brown ; alt. 35, diam. 11J, aperture with peristome 

 18 mill, long, 11 j- wide. Von Martens considers B. elegantissimua 

 Mousson a synonym of B. felix. 



D. ELEGANTISSIMUS (Mousson). PL 40, figs. 12, 13. 



Shell narrowly umbilicate or perforate, long ovate, striatulate ; 

 shining; whitish, very elegantly decorated with waved blackish- 

 brown flammules interrupted by white lines and dots. Spire long, 

 convex-conic, regular, the apex minute, white ; suture lightly im- 

 pressed, sublinear. Whorls 7, equably increasing, a little convex, 

 the last somewhat oblique, slightly ascending in front, slender, 

 rounded at base, a trifle compressed at the brown perforation. 



Aperture subvertical (5 from the axis), shorter than the spire, 

 regularly oval, angular above, violaceous-brown within on the palatal 

 and parietal walls ; peristome expanded, slightly reflexed, subacute, 

 white ; right and basal margins regularly curved ; columellar margin 

 proceeding from the columella which is oblique and pliciform far 



