HELIX-PAPUINA. 15 



H. XANTHOCHILA Pfeiffer. PL 9, figs. 67, 68, 69. 



Shell obliquely, narrowly perforated, elevated trochiform, smooth, 

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

 broadly expanded, of a yellow color. 



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

 growth, but no other sculpture ; shining, white ; spire conical ; whorls 

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

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

 Aperture 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. 



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

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



48, f. 7. (variety.) 



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

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



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

 crenulated frill. Fig. 69. 



H. BEATRIX Angas. PI. 14, figs. 59, 60, 61, 62, 63. 



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

 finely obliquely striated, variously colored ; spire conoidal : whorls 

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

 ing, somewhat inflated and obtusely subangulated at the periphery 

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

 outer lip very slightly expanded and reflected; the columella 

 descending vertically and callously reflected over the perforation. 

 (Angas.) 



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

 sometimes of a carnelian color. 



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

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



Var. c. Pellucid-w r hite, upper whorls yellow or orange. 



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

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



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

 apex. 



