254 DRYMA:US, SOUTH AMERICAN. 



/ 



Commonly, but incorrectly, referred to B. papyraceus as a syno- 

 nym. That D. magus belongs to \\iepapyraceus group of species is 

 evident from the similarly formed columella ; but the smoother sur- 

 face, compact form and heavy coloring are sufficiently distinctive 

 differences. I have identified with Wagner's long-lost species a 

 Drymceus sent me by Dr. H. von Ihering from Sao Paulo, which is 

 described below. The wide separation of the localities is the only 

 objection to be raised to tnis identification ; but even this does not 

 cause me to seriously doubt their specific identity. 



PI. 51, fig. 8. Shell narrowly perforate, ovate, of rather short, 

 stout figure ; thin ; cream-colored, heavily painted with longitudinal 

 black stripes which abruptly terminate a short distance from the col- 

 umella, leaving a nearly uniform pink circum-umbilical patch ; aline 

 of the creamy ground tint below the sutures; the stripes becoming 

 obsolete above, several earlier whorls rose-colored. Surface slightly 

 shining, smooth to the naked eye, showing slight growth-wrinkles 

 and faint, superficial spiral striae under a strong lens ; the apical If 

 whorls with typical Drymceus sculpture. Spire short and stout, 

 apex slightly obtuse ; whorls 5J, slightly convex, the last with a 

 somewhat roseate streak behind the lip. 



Aperture ovate, slightly exceeding half the total alt., conspicuously 

 white and dark-brown striped within ; peristome thin, a mere trifle 

 expanded, pale-edged, with an inconspicuous roseate submargin ; col- 

 umella nearly straight, deeply entering, the edge reflexed, almost 

 closing the narrow umbilical fissure. Alt. 23, diam. 13, alt. of 

 aperture 12? mill. 



D. HENSELII (v. Martens). PI. 41, figs. 37, 38. 



Shell perforate, ovate-turrited, irregularly striate and sculptured 

 with very delicate, very close spiral Mnes ; whitish, painted with 

 brown streaks, which are confluent in the middle of each whorl. 

 Apex obtuse, brownish. Whorls 6, rather flattened ; suture irreg- 

 ularly undulating; last whorl little convex below. 



Aperture subvertical, ovate-oblong, nearly half the length of the 

 shell ; peristome a little thickened, lightly spreading, white, the col- 

 umellar margin dilated, not closing the perforation, expanded above 

 in a parietal lamina. 'Columella itself twisted. Alt. 40, diam. 28 

 mill; aperture 20 mill, long, 11 wide. (Mart.). 



Costa da Serra, prov, Rio Grande do Sul, Brazil (Hensel). 



