10 HELIX-PAPUINA. 



dark callus over the excavated umbilical region ; inner edge of the 

 columella straightened, thickened, deeply entering. 



Alt. 21, greater diam. 25, lesser 2H mill. 



Alt. 19, greater diam. 21, lesser 18 mill. 



Bougainville, Faro and Short land Is., Solomon Group. 



H. hargreavesi ANG., P. Z. S. 1869, p. 625, t. 48, f. 2. PFR. 

 Mon. vii, p. 310. SMITH, P. Z. S. 1885, p. 591. " H. Hargravesii 

 Cox, " PAETEL, Catal., p. 90. 



The broadly brown-bordered lip, polished surface destitute of an- 

 teriorly descending wrinkles, and the small sparsely scattered bluish- 

 translucent dots, are the more prominent characters of the species. 

 H. gamelia is closely allied, but it lacks the dark lip, and has the 

 upper lip more arched forward ; H. hargreavesi further differs from 

 H. gamelia in having the last whorl abruptly and considerably 

 deflexed in front. 



H. GAMELIA Angas. PL 3, figs. 44, 45, 46, 47. 



Imperforate, low-turbinate, thin ; spire conical, apex light, obtuse; 

 whorls 5-2, slightly convex, the last either rounded or subangular at 

 the periphery, not descending in front; surface smooth, lightly 

 striatulate, color cream white, becoming light brown on the latter 

 half of the body-whorl, white on the spire, encircled by a narrow 

 dark brown band bordering the suture below, a wider band at the 

 periphery, and another on the base midway between axis and peri- 

 phery ; all visible within the aperture. Aperture very oblique, sub- 

 rhombic ; lip white or light brown, the columella brown. 



The lip is bordered behind by a light and then a dark stfreak. 

 The upper lip is slightly expanded, notably arched forward, reced- 

 ing toward the outer angle of the mouth. The columellar lip is 

 spread in a thin brown callus over the impressed umbilical region. 

 The edge of the columella is thickened ; it is not truncated at the 

 base. Alt. 18-1 greater diam. 21, lesser 17$ mill. % 



Stephen, Ysabel, Shortland and Treasury Islands, Solomon Group. 



Geotrochus gamelia ANG., P. Z. S. 1867, p. 888, t. 43, f. 1-3. H. 

 gamelia PFR., Mon. vii, p. 313. SMITH, P. Z. S. 1885, p. 591. 



Thinner, less elevated than II. hargreavesi, differently colored, and 

 having the last whorl not descending to the aperture. 



H. BRODIEI Brazier. PL 6, fig. 9. 



Shell imperforate, flatly conical, thin, shining, obliquely faintly 

 and irregularly plicately striated ; white, with a chalk-white band at 



