206 DRYM^EUS, SOUTH AMERICAN. 



marked with whitish, and showing two series of arrow-shaped 

 blotches forming interrupted bands, obsolete in some specimens; 

 somewhat shining, with superficial wrinkle stride, becoming conspicu- 

 ous on the latter part of the last whorl, especially below. Spire 

 with slightly convex lateral outlines, apex purple or white. Whorls 

 -6, the upper ones but slightly, the penultimate strongly convex ; 

 last whorl decidedly tapering below, where it is produced and per- 

 ceptibly pinched ; suture slightly ascending near its termination. 



Aperture large, semi-oval, whitish within, somewhat oblique; 

 peristome dee}) lilac or purple, with the blunt outer edge white, the 

 outer lip but slightly expanded above, very broadly expanded and 

 -flaring below where it passes into the oblique basal lip; columella 

 strongly twisted, reversed sigmoid, purplish, its inner edge cord-like ; 

 reflexed and closely appressed, leaving only a small chink at the 

 lower end of the reflexed portion. Parietal callus a mere transpar- 

 ent glaze. 



Alt. 38|, diarn. 16 ; alt. of aperture 20 mill. 



Alt. 42, diam. 18 ; alt. of aperture 21 mill. 



Habitat unknown. 



Peculiar in the oblique passage of the outer into the basal lips, 

 their broadly flaring expansion, and the very strongly sigmoid 

 curvature of the columella, which has not been shown as strongly in 

 the drawings as it is in the shells. The deep-lilac purple of the lip 

 is as prominent as in D. glaucostoma. Described from two specimens 

 of unknown origin, from the collection of Mr. John Ford. 



D. GERMAINI (Ancey). 



Shell oblong-attenuated, shining, very nairowly rimate, showing 

 incised spiral striae under a strong lens ; somewhat bluish-white, with 

 irregularly flexuous or lightning-zigzagged streaks of tawny-bluish. 

 Spire moderately produced, rather obtuse. Whorls 6], convex, 

 separated by rather deep sutures, the last whorl attenuated, oblong, 

 making a short, sudden ascent at the aperture. Aperture a little 

 oblique, oblong, slightly lunate, angular above, patulous ; interior 

 with the parietal wall and columella lilac colored, becoming whitish 

 in the throat, and showing the streaks by translucence ; peristome 

 expanded throughout, the columella a little twisted, nearly straight, 

 a little more dilated, covering the perforation ; terminations remote. 

 Alt. 28, diam. 11 mill.; alt. of aperture 14 mill. {Ancey}. 



Matto-Grosso, Brazil (Germain). 



