96 DRYM^EUS LEIOSTRACUS. 



or spout ; peristome thickened and broadly white-edged within, 

 slightly expanded, the columellar margin with a short triangular re- 

 flexion above, narrow below. 



Alt. 24, diam. 12, length of aperture 11^ mill. 



Bahia, Brazil (Blanchet). 



Helix (Cochlogena) viminea MORICAND, Mem. Soc. Phys. et d* 



Hist. Nat. Geneve, vi, p. 540, pi. 1, f. 5 (1833 ?) Bulimus vimineus 



POT. & MICH., Gal. du Douai, i, p. 150, pi. 13, f. 19, 20. DESK, in 

 Lam., p. 242 REEVE, Conch. Icon., pi. 40, f. 246. PFR., Monogr. 



ii, p. 95 ; iii, p. 375 ; iv, p. 444; vi, p. 80 ; viii, p. 113 HIDALGO, 



Journ. de Conchyl., 1870, p. 59. Bulimulus vimineus BECK, Index 

 Moll., p. 64, with var. normalis and leucostoma (undescribed). 



Closely allied to D. onager ; but the aperture is always produced 

 or channelled more or less at the outer basal portion, there are some 

 ochre-colored stripes among the purplish and white ones, and dots are 

 sparsely scattered over the surface. The pattern of coloring is not so 

 mutable as in onager, the variation being in the width of the stripes, 

 greater or less prominence of the ochre coloring, and number of dots. 

 There is wide variation in the shape of the aperture, but the outer lip 

 is shown too arcuate in fig. 20. 



Hidalgo reports vimineus from Rio Janeiro, on the authority of 

 Paz ; but I do not think it inhabits that province. 



D. MANOELI (Moricand). PI. 14, figs. 23, 24. 



Shell perforate, ovate-conic, rather solid though thin ; fleshy- or 

 yellowish-white, usually with indistinct purplish streaks above, with 

 two rather narrow purple bands, one basal, the other peripheral, as- 

 cending the spire, where it is partially disclosed above the sutures ; 

 the upper part of the spire generally corneous. Surface smooth 

 except for slight growth-lines, shining. Spire conic, the apex rather' 

 obtuse. Whorls 6J to nearly 7, moderately convex, the last well 

 rounded. 



Aperture oblique, ovate, white with two bright chestnut bands 

 within, and often clouded with chestnut above the upper band ; per- 

 ietome white, very narrowly expanded, the columellar margin trian- 

 gularly dilated above. 



Alt. 21, diam. 11^, length of aperture 10 mill. 



Bahia, Brazil (Blanchet, Anthony, Ihering). 



Helix (Cochlogena) manoelii MORIC., Mem. Soc. Phys. et Hist. 



