252 DRYM^US, SOUTH AMERICAN. 



and narrow, inhabits the littoral of Brazil, from the province of Rio 

 Grande do Sul as far as Bahia and Pernambuco. The other [prob- 

 ably = var.papyrifactus], which is always shorter and is larger, with 

 more open aperture, lives in the province of Corrientes and the Mis- 

 sions. We have found the first variety in 1826 in the environs of 

 Rio Janeiro, and the second in the woods bordering the Parana, 

 Rio-Batel, Rio Santa-Lucia, and on the Lake of Hera. 



Var. PAPYRIFACTUS Pilsbry, n. v. PL 51, figs. 4, 5. 



Conspicuously shorter and more inflated, the spire short, conic; 

 whorls 5 to 5s, the last inflated, convex below. Aperture exceeding 

 half the shell's length, the columellar reflection wider, not pressed 

 in at its junction with the body-whorl, leaving a moderate umbilical 

 fissure. Alt. 28, diarn. 16J, length of aperture 17 mill. 



Curitiba, prov. Parana, Brazil (H. von Ihering). 



This form is probably identical with von Martens' var. b, which 

 is described as more ventricose (length 30J, diam. 17, length of 

 aperture 17 mill.), from Porto Alegre, prov. Rio Grande do Sul. It 

 may be what Strebel calls " var. latior Martens ; " but no informa- 

 tion to substantiate this supposition has been published. 



Just what relation B. litus Reeve, not Fer. (pi. 51, fig. 6), bears 

 to var. papyrifactus I have not been able to ascertain, having no 

 specimens like it. It has a longer spire. 



D. POLYGRAMMUS (Moricand). PI. 26, fig. 70. 



Shell umbilicate, small, oblong-conic, thin ; whitish marked with 

 numerous brown longitudinal streaks, which stop short of both suture 

 and base, and are split into lines by the white longitudinal strice, a 

 basal white band, and a dark brown band revolving within the um- 

 bilicus. Surface hardly shining, very coarsely striated with low, 

 white striae as wide as their intervals, no spiral striation. Spire 

 long, rather thick, with slightly convex lateral outlines, the apex 

 obtuse, with typical Drymceus sculpture. Whorls 62, slightly con- 

 vex, the last rounded at periphery, subcompressed below, somewhat 

 angularly rounded at the verge of the rapidly contracting umbilical 

 perforation. 



Aperture small, ovate, but slightly oblique ; brownish with a basal 

 white band within ; peristome thin, almost imperceptibly expanded, 

 white, the columellar margin broadly dilated above, columella 

 concave below, straight above. 



Alt. 13J, diam. 6, length of aperture 5J mill. 



Forests of Caxoeira, prov. Bahia, Brazil (Blanchet). 



