50 HELIX-PAPUINA. 



sort of obtuse fold near its insertion, which is rather deep in the axis 

 (see fig. 69.) 



Alt. 21, greater diam. 23, lesser 28 mill. 



Alt. 26, greater diam. 27, lesser 19i mill. 



Solomon Is. 



H.flexilabrisPFR.,P.Z. S. 1856, p. 382; Malak. Bl. 1856, p. 

 239 ; Mon. Hel. Viv. iv, p. 199. DOHRN in Contin. Conchyl. Cab., 

 p. 587, t. 172, f. 14, 15. 



The locality given by Pfeiffer, Admiralty Is., is probably erroneous. 

 Three trays before me are from the Solomons. Figures 68, 69 are 

 a little flatter than Pfeiffer's type. Numerous shells before me agree 

 in characters ; others are more elevated (figs. 70, 71), but I am un- 

 able to separate them specifically. There is considerable variation in 

 the convexity of the whorls, but it is probably never so marked as in 

 H. coniformis, which is from another island group, and doubtless dis- 

 tinct specifically. 



There is a translucent-bluish patch around the columella, faint, but 

 well-defined against the opaque cream ground-color of the shell. 

 This occurs also in H. gamelia. All of the specimens seen are two- 

 banded. 



H. CONIFORMIS Ferussac. PI. 4, figs. 78, 79 ; pi. 17, fig. 43. 



Imperforate, orbiculate-conic, smooth, whitish-brown, ornamented 

 with brown bands which are often articulated. Suture deep ; whorls 

 5, convex, the last flattened beneath, descending in front. Aperture 

 very oblique, large, oval ; peristome thin, white, broadly expanded, 

 the margins converging, basal lip reflexed, columellar lip dilated, 

 appressed. Alt. 18, greater diam. 24, lesser 18 mill. (Pfr.) 



Port Pralin, New Ireland. 



H. (Helicostyla) coniformis FER., Hist. 1. 108, f. 1. H. coniformis 

 DESH. in Lam., An. s. V. p. 103; PFR., Monogr. i, p. 229 ; Conchyl. 

 Cab. p. 435, t. 151, f. 9, 10. REEVE, Conch. Icon. f. 101. H. 

 turbinata DESH., Encycl. Meth. ii, p. 265. H. tuffetii LESS., Voy. de 

 la Coquille, p. 313, t. 10, f. 3. 



The whorls are more convex than in H. flexilabris, and the bands 

 are often articulated. PI. 17, fig. 43, is one of Ferussac's original 

 illustrations. 



