HELIX-PAPUINA. 



15 



XANTHOCHILA Pfeiffer. PI. 9, figs. 67, 68, 69. 



Shell obliquely, narrowly perforated, elevated trochiform, smooth, 

 ilabastrine-white ; spire conical, apex dark ; periphery rounded ; lip 

 >roadly expanded, of a yellow color. 



The shell is rather thin, but strong, having slight wrinkles of 



:owth, but no other sculpture ; shining, white ; spire conical ; whorls 



>, but slightly convex, the last not descending in front. Columella 



widely expanded, its inner edge nearly straight and sub-vertical. 



.pert are quite oblique. The axis is very narrowly perforated 



throughout. Young shells are keeled. 



Alt. 46, diam. 29 mill. 



Solomon Is. 



H. xanthochila PFR. P. Z. S. 1861, p. 192 ; Novit. Conch, p. 175, t. 

 t7, f. 5, 6 ; Monogr. v, p. 334. DOHRN in continuation of Krister's 



Dchyl. Cab. p. 584, t. 172, f. 7, 8. Cox, P. Z. S. 1873, p. 567, t. 



S, f. 7. (variety.) 



A beautiful species, easily known by the size, form and the yellow 

 ip. Part of the specimens before me are marked Bougainville Island. 



Variety. Lip generally pure-white, and converted into broad 



jnulated frill. Fig. 69. 



[. BEATRIX Angas. PL 14, figs. 59, 60, 61, 62, 63. 

 Shell narrowly perforate, ovately conical, rather thin, not shining, 

 lely obliquely striated, variously colored ; spire conoidal : whorls 

 , rounded, narrowly margined at the sutures, the last non-descend- 

 ig, somewhat inflated and obtusely subangulated at the periphery 

 front, moderately convex at the base ; aperture subcircular; the 

 niter lip very slightly expanded and reflected ; the columella 

 lescending vertically and callously reflected over the perforation. 

 {Anga.8.} 



Var. a. Rich orange-yellow throughout, inner lip white, apex 

 nnetimes of a carnelian color. 



Var. 6. Bright yellow, apex orange, with a narrow black band 

 imediately below the suture of the last whorl, lip black. 

 Var. c. Pellucid- white, upper whorls yellow or orange. 

 Var. d. Upper whorls white, last whorl light brown, with a nar- 

 >w pale band below the suture, lip white stained inside with purple. 

 Var. e. Very dark purplish-chocolate color, reddish toward the 



