HELIX-PAPUINA. 21 



H. BLAND A Cox. Unfigured. 



Shell imperforate, conical, very thin, translucent, obliquely finely 

 striated, of a pale brownish-yellow ; spire with the apex acute ; 

 whorls 7, gradually increasing in size, the last moderately inflated 

 and sharply carinated at the periphery; base flattened; suture not 

 margined ; aperture subrhomboidal, margins somewhat approximat- 

 ing, not united by a callus, subangulate at the periphery of the last 

 whorl ; margins simple, slightly everted, columellar margin descend- 

 ing vertically, joining the basal margin at an obtuse angle. (Cox.) 



Alt. '92, greater diam. '76, lesser *64 inch. 



Solomon Is. 



H. blanda Cox, P. Z. S. 1873, p. 147. 



This species is closely allied to H. adonis of Angas, but after com- 

 paring it with a number of specimens of that species I feel sure that 

 it has permanent differences ; it is a much thinner and lighter shell, 

 much more sharply keeled, and much less coarsely sculptured. 

 (Cox.) 



H. MEXDOZA Brazier. PI. 10, fig. 87. 



Shell narrowly perforate, conical, rather thin, very finely obliquely 

 striated, light-straw color throughout; spire conoid, apex rather 

 obtuse; whorls 6 to 62, slightly convex, narrowly channelled at the 

 suture, sharply cariiiated and angled at the periphery, base rather 

 flat ; aperture oblique, triangularly ovate ; peristome thin, white, 

 right margin a little expanded, columellar margin reflexed, and ex- 

 panded over the perforation. (Brazier.) 



Alt. 16, greater diam. 13, lesser 11 mill. 



Choiseul Island, Solomon Group. 

 H. mendoza BRAZIER, P. Z. S. 1872, p. 21, t. 4, f. 8. 



Evidently allied to H. adonis, but more acutely keeled. 



H. HERMIONE Angas. PL 9, figs. 73, 74. 



Narrowly, obliquely perforate, thin, elevated trochoidal, the last 

 whorl carinated, base rather flattened ; surface obliquely striatulate, 

 nearly smooth. Dark purplish-brown, with a buff band a short dis- 

 tance below the carina, and generally another midway between carina 

 and suture. Earlier two or three whorls deep blackish-purple. 



Spire conical, rather slender ; whorls 6, convex, the last not 

 descending in front. The rather flat base is bounded by an angle. 

 Aperture oblique, rounded-subtriangular, showing the bands within. 



