HELIX-PAPUINA. 13 



zonule white. Spire conic, apex submamillate ; whorls 5, a little 

 convex, separated by moderately impressed sutures, the last whorl 

 rounded at the periphery, flattened beneath. Aperture rhombic- 

 semi-ovate, very oblique ; peristome a little thickened, white, upper 

 margin straight, arched forward ; the lower margin shortly ex- 

 panded ; columellar margin straightened, very oblique, attenuated 

 at the insertion. 



Alt. 20, greater diam. 28, lesser 22 mill. (Mart.) 



New Ireland. 



H. MACFARLANEI Cox. Unfyured. 



Shell imperforate, thin, globosely conical, smooth, white, orna- 

 mented with one broad black band encircling the last whorl at the 

 middle, and a broad blackish-brown zone around the umbilical 

 region, also with dark brown or black interrupted broad zigzag lines, 

 running interruptedly across the last three whorls, with additional 

 isolated, irregularly disposed, round black spots, principally on the 

 body-whorl ; apex pale, denuded of color ; transversely finely striated 

 above and below, and concentrically striated at the base ; whorls 6, 

 rounded, gradually increasing in size, last slightly deflected in front 

 at its termination ; base convex ; aperture obliquely ovate-lunate ; 

 peristome slightly thickened and everted, margined internally with 

 white, and externally with orange, the external dark band on the 

 body-whorl showing through ; margins approximating, joined by a 

 very thin callus ; columella dilated externally, adnate over the um- 

 bilical region, internal margin descending, straight. 



Diam. greatest 0'92, least 0'68 ; height 0.72 of an inch. (Cox.) 



Solomon Islands. 



H. (Geotrochus) macfarlanei Cox, P. Z. S. 1873, p. 567. PFR., 

 Monog. vii, p. 315. 



It is somewhat allied to H. coxiana Angas. 

 H. COXIANA Angas. PL 3, figs. 36, 37. 



Shell imperforate, trochiform, rather thin, obliquely finely striated, 

 polished, creamy- white, the lower whorls ornamented with irregular 

 chocolate-brown spots ; spire conical, apex rather obtuse ; whorls 6, 

 flatly convex, the last scarcely descending, obtusely angled at the 

 periphery, convex at the base, the umbilical region pale purplish- 

 brown, with the central portion chocolate-brown ; columella sloping, 

 flattened, chocolate-brown ; aperture very oblique, ovate ; peristome 



