BULIMULUS-RHINUS. 81 



fiir Naturg., 1841, i, p. 278. pi. 11, f. 3 (immature). B. constrictus-' 

 PFR.-CLESS., Nomencl. Hel. Viv., p. 228. 



Distinguished from the closely allied B. pubescens by its larger- 

 size, somewhat stouter form and lack of the strong columellar fold 

 of that species. It is also geographically separated from pubescens. 

 Guppy has described a slightly smaller form as var. tateanus. Alt. 

 17, diam. 8, alt. of aperture 6 mill. The locality given is " Vene- 

 zuelan Guiana." Typical constrictus, however, ranges at least as 

 far west as La Guayra, and the alleged varietal characters of tate- 

 anus quite disappear when a large series of well-preserved specimens 

 is examined. The length varies from 17 to 23 mill. B. angosturen- 

 sis Gruner (pi. 13, figs. 13, 14) was based upon immature shells. 



The jaw has 11 wide folds, and like the radula, is of the typicall 

 Bulimulus type. 



The localities New Granada and Upper Marankon have bee- 

 reported on the evidence of Cumingian labels. They remain doubt- 

 ful. 



B. PUBESCENS (Moricand). PI. 13, figs. 15, 16, 19 ; pi. 15, fig. 23. 



Shell perforate, oblong, the length generally exceeding twice the 

 diameter, rather thin but moderately solid, light buff or corneous- 

 buff; surface with close, irregular growth-striae and close fine spiraL 

 lines of minute hairs, giving a velvet-like surface to which earthi 

 adheres. Spire long, convex-conic, the apex very obtuse, nepionie 

 whorls densely sculptured with conspicuously sinuous, often inter- 

 rupted striae (fig. 19). Whorls 6, quite convex, separated by deep 

 sutures. 



Aperture small, slightly oblique, whitish inside ; peristome rather 

 narrowly reflexed, white ; columella concave below, with a rather 

 strong fold above. 



Alt. 16, diam. 7? ; alt. of aperture 6 mill. 



Alt. 131, diam. 6? ; alt. of aperture 5 mill. 



Bahia, Brazil (Blanchet). 



Helix (Bulimus') pubescens MORIC., Mem. Soc. Phys. et Hist. 

 Nat. Geneve, xi, p. 157, pi. 5, f. 21-23 (1846). Bulimus pubescent 

 PFR. in Conchyl. Cab., p. 150, pi. 39, f. 10, 11 ; Monographia, ii,. 

 p. Ill ; vi, p. 57. KEEVE, Conch. Icon., pi. 63, f. 437. 



Smaller than B. constrictus Pfr., and with a stronger columellar 

 fold. 



UNIVERSITY 



