248 DRYM.33US, SOUTH AMERICAN. 



])iirplisli callus. Alt. 35, diam. 16, aperture with peristome 17 mill. 



long, 11 wide, (da Costa). 



Valley of the Cauca River, Colombia 



Bulhnultis (DrymoRUs) caucaensis DACosTA, Proc. INIalac. Soc. 

 Lond., iii, p. 81, pi. 6, f. 3 (July, 1898). 



Very near forms I have referred to D. blandi, from Fresno and 

 Antioquia, but with narrower lip, and plicate-striate instead of mal- 

 leated surface. A comparison of D. smithii, caucaensis and blandi, 

 with abundant material, might possibly cause their consolidation 

 under the former name. 



D. BLANDI Pilsbry, n. sp. PI. 43, figs. 73, 74, 75 (types), 76, 79, 

 80 (var.). 



Shell narrowly perforate or subperforate, obliquely oblong-acu- 

 minate, solid and opaque ; white or nearly so, unicolored (fig. 75) or 

 with irregularly spaced narrow, longitudinal brown or purple-brown 

 streaks and two narrow spiral bands of the same color, becoming 

 interrupted into arrow-shaped spots on the spire (fig. 74), or two or 

 three bands without longitudinal streaks (fig. 73), or with other pat- 

 terns (see below). Surface rather shining, with slight growth- 

 wrinkles, a rather minute malleation which varies from conspicuous 

 to subobsolete, and rather widely spaced, superficially engraved 

 spiral lines, in some specimens scarcely to be detected. Spire rather 

 straightly conic, apex somewhat obtuse with typical Drymceus sculp- 

 ture. Whorls 6, slightly convex. 



Aperture oblique, long-ovate, slightly over half the alt. of shell, 

 broadly bordered within with dull brownish-purple which fades to 

 white toward the outer edge of lip and in the throat ; peristome 

 broadly expanded, columellar margin narrowly expanded, reflexed 

 and a little wider above ; columella slightly concave, purple-brown ; 

 purietal callus dark purple-brown. 



Alt. 30J, diam. 14* ; alt. of aperture 15i mill. 



Alt. 26-], diam. 13 ; alt. of aperture 13 mill. 



Near Fresno, Colombia (Bland). 



A species excessively variable in color-pattern, but with the broad 

 internal lip border, columellar edge and parietal wall constantly 

 dull purple, much as in D. geometricus. It is evidently allied to D. 

 tribalteatus, studeri, smithii, caucaensis, etc. 



Figures 73-75 are from the types collected near Fresno. The 

 aperture is more obliquely prolonged and narrow than in D. smithii. 

 and D. caucaensis. 



