HELIX-PAPUINA. 17 



the suture broad white opaque band ; spire conoid, apex rather 

 obtuse ; whorls 6, moderately convex, base convex ; aperture diagonal, 

 triangularly ovate, peristome white, thickened and reflected ; mar- 

 gins distant, columellar margin broad and expanded over the perfor- 

 ation. (Braz.} 



Alt. 25, greater diam. 21, lesser 16 mill. 



Maru Sound or Caracoa Harbor, Guadalcanar Island, Solomon 

 Archipelago. 



H. Brenchleyi BRAZ., Proc. Linn. Soc. N. S. Wales, i, p. 3, 1875. 

 Pfr. Monogr. vii, p. 582 (not H. brenchleyi Angas, P. Z. S. 1878, 

 p. 861, =H. walleri Brazier.) 



H. MENDANA Angas. PI. 8, figs. 55, 56. 



Narrowly, obliquely umbilicated, elevated trochiform, the periph. 

 ery rounded. Surface striatulate, nearly smooth ; buff, with three 

 chestnut bands, the lower one occupying the greater part of the 

 base ; suture with a broad white or buff margin. Lip well expanded, 

 white. 



The shell is thin, not so strong as H. meta. The upper band is 

 often faint ; and frequently no bands are seen on the spire. The 

 apex is rather acute ; the last whorl has no trace of a keel. Aper- 

 ture oblique, rounded-subtriangular, white inside and showing the 

 three dark bands. Lip white, well reflexed all around. 



Alt. 28, diam. 23 mill. 



Bougainville Id., Shortland Id., Stephen's Id. (and Ysabel Id.f), 

 Solomon Group. 



H. mendana ANGAS, P. Z. S. 1867, p. 889, t. 43, f. 11, 12. 

 PFR., Monogr. vii, p. 384. DOHRN in Contin. of Kiister's Conchyl. 

 Cab., p. 571, t. 168, f. 14, 15. SMITH, P. Z. S. 1885, p. 591. 



The shell is less solid, and the upper whorls of the spire rather 

 slenderer than H. meta and its varieties. The color pattern is very 

 different, also. The broad basal band is sometimes replaced by a 

 number of narrower stripes. 



H. META Pfeiffer. PI. 9, figs. 59, 60, 61, 63, 70. 



Obliquely, narrowly perforated, elevated trochiform, smooth, 

 shining. The last one or two whorls are dark olive, brown or pur- 

 plish-brown, or clear yellow, becoming blue or purple on the spire ; 

 the suture has a conspicuous snow-white border ; periphery rounded 

 or bluntly angular ; face and back of the lip dark brown. 



