78 BULIMULUS-RHINUS. 



somewhat undulating vertical striae (fig. 21) with indistinct, fine 

 spiral lines above the suture. Whorls 5f to 6, convex, the last 

 globose, usually a trifle angulated peripherally at its origin, slightly 

 deflexed in front. 



Aperture rounded, oblique, somewhat flesh-tinted within ; peri- 

 stome paler, narrowly expanded ; columellar margin broadly 

 dilated above. 



Alt. 23'7, diam. 15, alt. of aperture 10'5 mill. ; whorls 6i. 



Alt. 17, diam. 12, alt. of aperture 8'5 mill. ; whorls 5f. 



Brazil. 



Helix scobinata Mawe, WOOD, Index Testae. Suppl., pi. 8, f. 77. 

 PFR., Monogr., ii, p. 100 ; iii, p. 338 ; vi, p. 49 ; Conchyl. Cab., 

 p. 253, pi. 68, f. 12, 13. 



The high conic spire and especially the clear-cut but very minute 

 striolation of the apex are leading features of this species. It varies 

 a good deal in size and number of whorls. 



VAR. PI. 15, figs. 21, 22. 



Fragile, with the sculpture and slight anterior peripheral angula- 

 tion of scobinatus; but decidedly more globose with shorter spire; 

 whorls 5|. Alt. 19, diam. 15 mill. 



B. CILIATUS (Gould). PI. 13, figs. 17, 18 ; pi. 15, fig. 24. 



Shell thin and fragile, ovate-conic, acute at summit, covered with 

 minute, crowded longitudinal and revolving striae. On the revolv- 

 ing striae are seated series of dark, stiff, tapering, slightly recurved 

 hairs of unequal length ; there are about eight series of the long 

 ones on the penult whorl, and about twenty on the last whorl, 

 between two of which are either two or three series of shorter and 

 finer ones, the whole resembling coarse velvet. Whorls six, con- 

 vex ; [nepionic whorls densely and minutely vertically striolate, the 

 striae clear-cut, somewhat beaded by the crossing of equally fine 

 incised spiral lines] ; the last one large, ventricose, and subcarinate. 

 Suture profound ; aperture subovate, slightly angular at base, lip 

 simple, acute; columella straight, white, reflected over a small, deep 

 perforation. Length of axis five sixths of an inch, breadth six- 

 tenths of an inch. (Old.). 



Alt. 19, diam. 15, alt. of aperture 10 mill, (specimen). 



Brazil, Province Rio de Janeiro, Organ Mountains, on bushes 

 near the water (Dr. Pickering), and San Domingo, a suburb of Rio 

 Janeiro, on the trunks of trees (A. D. Brown). 



