188 DRYM^US-ZAPLAGIUS. 



the distal portion of the last whorl is pale Isabella yellow, all the 

 rest of the shell including the apex, pure white. 



D. URANOPS Pilsbry, n. sp. PL 27, figs. 24, 25, 26, 27. 



Shell obliquely conic, carinated, perforate and with a semicircular 

 umbilical groove, thin ; white, with a narrow brown band just above 

 the periphery, a wider median blue-black girdle, and some faint 

 scattered markings and dark maculae forming a broad subsutural 

 band, the spire white with black apex, base white with an interrupted 

 brown spiral band. Surface rather lusterless, with coarse, low, 

 oblique waves in the direction of growth striae, conspicuously and 

 coarsely malleated above the carina and over the base as /ar inward 

 as the greatest convexity, showing under the lens rather fine waved 

 spiral lines, subobsolete beneath. Whorls nearly 5, the first black 

 above, the last ascending in front, with a projecting keel, concave 

 below the keel, becoming somewhat swollen around the umbilical 

 perforation. 



Aperture decidedly oblique, looking upward about as in D. navi- 

 cula, triangular, banded within ; peristome expanded throughout, 

 white, the upper margin inserted above the middle of the penultimate 

 whorl, basal lip slightly arcuate, horizontal. 



Alt. 17, greatest diam. 30, least 18 mill. . 



Brazil (Anthony). 



With the texture and coloring of D. lateralis this species combines 

 the general contour of D. involuius. From the latter it differs in 

 being banded and with a black apex, in the quite irregular mallea- 

 tion, more extensive beneath, and in the less ascending last whorl, 

 the upper insertion of the outer lip being somewhat above the middle 

 of the penultimate whorl (and therefore a little lower than in navi- 

 eula) instead of being carried up to the initial whorl as in involutus. 



It differs from D. navicula in the convex base with coarse, wrinkle- 

 like malleation, less reflexed peristome, and numerous other char- 

 acters. The convex base, higher insertion of the outer lip and sub- 

 horizontal basal lip separate D. uranops from D. lateralis. 



D. LATERALIS (Menke). PI. 27, figs. 28, 29, 30, 31, 32, 33. 



Shell obliquely conic, with flattened base and semicircular rima- 

 tion, thin ; white with numerous interrupted spiral brown bands and 

 irregular spots and blotches above, obsolete on the spire, the base 

 with many brown lines, often interrupted or coalescent into bands, 

 liusterless, rather coarsely wrinkle-striate, with subobsolete spiral 



