DRYM^US, SOUTH AMERICAN. 249 



Another specimen, also from Fresno, is probably referable to 

 blandi as a variety, though it differs in the larger size (alt. 33, diam. 

 16, length of aperture 18 mill.), the more open umbilical chink and 

 the color-pattern, which consists of longitudinal brown streaks speck- 

 led with white, and cut into spots by two or three spiral white zones. 

 The lip is very broadly expanded. It has considerable resemblance 

 to the figure of D. caucaensis da-Costa, though the lip is broader and 

 it is heavily plicate-striate. It is evidently the same as a specimen 

 from Antioquia (pi. 43, fig. 76), in which the longitudinal streaks 

 are stronger, not cut by white spiral zones, though the lower part of 

 the base is white, and there are several ill-defined, dark spiral bands. 

 This shell has much the color pattern of D. murrinus Reeve, but not 

 the subangularly prolonged base of that species. 



Fig. 79 is a variety with somewhat open umbilical chink, and 

 light brown longitudinal streaks closely vermiculate-liueolate with 

 white. It is said to be from Bogota. Another Bogota specimen 

 (fig. 80) collected by Bland, has the umbilical chink wholly closed, 

 and there are three faint girdles crossing the equally faint brownish 

 longitudinal streaks. This shell measures: alt. 36, diam. 18, length 

 of aperture 18 mill. 



D. MALLEATUS (da Costa). PI. 50, fig. 86 



Shell ovate-conic, rather solid, slightly umbilicated. Whorls 5, 

 the last crenate at the sutures, peculiarly corrugated, transversely 

 obscurely striated. Columella calloui. Aperture whitish within, 

 oval, " basi partim bisecta," the margins joined by a buff callus, 

 white, variedly streaked with ashy-brownish, the lip roseate. Alt. 

 34, diam. 15, length of the aperture, measured inside, 14, width 6 



mill, (da Costa). 



La Paz, Bolivia, altitude 3,600 meters. 



Bulimulus (Drymceus) malleatus DA COSTA, Proc. Malac. Soc. 

 Lond., iii, p. 82, pi. 6, fig. 7 (July, 1898). 



A beautiful and interesting shell described from a single specimen. 

 The curious malleation of the surface is very peculiar and unique, 

 I believe, in shells belonging to this section (daCosta*). I do not 

 understand just what structure the author intends to be understood 

 by the phrase "Apertura . . basi partim bisecta." 



Group of D. papyraceus. 



Mormus ALBERS, Die Heliceen, 2d edit., p. 216 (1860), type B. 

 papyraceus (Ma we). 



