8 HELIX-PAPUINA. 



Aperture oblique, subrhombic, banded within ; lip slightly 

 expanded, its face and reverse white ; columella wide, flat, its inner 

 edge slightly arcuate, scarcely truncate below. 



Alt. 24, greater diam. 20 J, lesser 18 mill. 



Alt. 22, greater diam. 25, lesser 22 mill. 



Malanta Is., Solomon Group. 



H. malantensis ANGAS, P. Z. S. 1876, p. 488, t. 47, f. 1-3. 



Closely allied to H. ambrosia var. ramsdeni, but lacking hydro- 

 phanous patches, and having a greater number of bands. It differs 

 from H. guadalcanarensis in being somewhat more elevated, and f 

 not angled at the periphery. Figures 20, 21, 22 and the measure- 

 ments last given above are from Angas. The other figure repre- 

 sents the shell before me, described above. 



H. PHILOMELA Angas. PI. 4, figs. 66, 67. 



Shell im perforate, trochiform, moderately solid, obliquely obscurely 

 striated ; whitish, the whorls ornamented in the middle with a broad 

 fascia composed of numerous purplish chocolate bands with a similar 

 fascia below the periphery, and crossed obliquely with close narrow 

 white lines corresponding with the lines of growth ; spire conical, 

 apex obtuse, purplish-black, whorls 6, moderately convex, sutures 

 impressed, last whorl rather inflated descending in front, and con- 

 tracted behind the aperture, base somewhat flattened ; aperture sub- 

 ovate, very oblique, peristome thickened expanded and slightly 

 reflected, the right margin a very little sinuated ; columellar margin 

 dilated, and furnished within with a prominent callus terminating 

 abruptly within the aperture; the columella and the interior of the 

 aperture dark chocolate-brown, the inner edge of the lip orange, and 

 the reflected portion white, immediately behind which is a pigment- 

 like black deposit on the whorl. (Angas.) 



Alt. 20, greater diam. 25, lesser 20 mill. 



Ysabel Island, Solomon Group. 



H. philomela ANGAS, P. Z. S. 1872, p. 610, t. 42, f. 2, 3. 



Differs from H. guadalcanarensis in the form of the columella. 



The form figured by Angas is said by Cox to be the rarest 

 variety of this species, and cannot be regarded as an ordinary rep- 

 resentative. It is found abundantly at the Louisiade and Solomon 

 Is. ; and the prevailing color is white, with a dark black edge behind 

 the reflexed lip. (See Cox, P. Z. S. 1873, p. 566, under H. re- 

 dempta.~) 



