226 DRYM^EUS, SOUTH AMERICAN. 



the corresponding more or less lateral deviation of the aperture. 



(Dohrn). 



D. PUNCTICULATUS (Pfeiffer). 



Shell profoundly and compressedly umbilicate, ovate-conic, rather 

 thin, smoothish, shining ; whitish, with sparsely scattered pellucid 

 dots. Spire long conic, rather acute. Whorls 7, rather flat, the 

 upper buff; last whorl shorter than the spire, ascending anteriorly, 

 slightly compressed basally. Columella somewhat receding, lightly 

 arcuate; aperture subvertical, oblong-oval ; peristome simple, the 

 right margin narrowly expanded, columellar margin very much 

 dilated, somewhat flexuous. Alt. 29, diara. 12i mill. ; aperture with 

 peristome 14 mill, long, 81 wide. (Pfr.). 



Bolivia (Cuming coll.). 



Bulimus puncticulatus PFR., P. Z. S., 1856, p, 390 ; Monogr., iv, 

 p. 404. 



D. HAMADRYAS (Philippi). PI. 41, figs. 32, 33. 



Shell perforate, ovate-fusiform, very thin and very glossy ; whitish, 

 painted with angular red, white-clouded streaks. Whorls 6, rather 

 flat, the last compressed and subangular basally, slightly longer than 

 the spire. Aperture subtriangular, spreading, lilac-margined in- 

 side ; columella slender, very short ; peristome dilated, subreflexed ; 

 columellar lip very oblique, forming an angle with the outer lip, 

 moderately dilated above, half covering the umbilical chink. Alt. 

 31J, oblique diam. 14 mill. ; aperture nearly 17 mill, long, 9 wide 

 (Philippi). 



Chanchamayo, Peru (Raimondi). 



Bulimus hamadryas PHIL,, Malak. Bl., xiv, 1867, p. 68. PFR., 

 Novit. Conch., p. 341, pi. 81, f. 1, 2 : Monogr., vi, p. 79. 



The angular base recalls D. fidaensis, the coloring D. expansus. 

 Philippi remarks upon the resemblance to B. aurisratti. "A dis- 

 tinct though rounded angulation encircles the umbilicus, terminat- 

 ing at the lower angle of the aperture. Embryonal whorls under a 

 strong lens very finely decussated. Colors, especially of the aper- 

 ture, almost as in B. xanthostoma Orb." 



D. CRICHTONI (Broderip). PL 34, fig. 14. 



Shell imperforate, ovate-turrited, the apex obtuse ; longitudinally 

 strongly rib-plicate ; yellow, variegated with dull green. Whorls 

 , a little convex, the last about as long as the spire ; columella 



