34 HELIX-PAPUINA. 



H. vitrea FER., Hist. t. 64, f. 4 (bad). PFR., Conchyl. Cab. p. 70, 

 t. 76, f. 18, 19, (copy of Ferus.) ; Monogr. i, p. 326. TAPPARONE- 

 CANEFRI. Ann. Mus. Civ. Genov. xix, p. 116, 1883. H. albula 

 LE GUILL. Kev. Zool. 1842, p. 139. PFR., Monogr. i, p. 328. 

 MARTENS Ostas. Exped. Landschn. p. 319, t. 17, f. 6. Geotrochus 

 vitracea BECK, Index, p. 48. 



H. ARROWENSIS Le Guillou. Unfigured. 



Shell trochiform, carinated, subumbilicate, white, hyaline ; whorls 

 5, a little convex, the base depressed ; substriate ; last whorl having 

 an acute carina, convexly depressed below. Spire conical, apex 

 obtuse. Aperture subsemiovate, margin reflexed ; lip broad, nearly 

 covering the umbilicus. Alt. 12, diam. 17 mill. ((?.) 



Aru Islands. 



H. arrowensis LE GUILL., Rev. Zool. 1842, p. 139. PFR., Monogr. 

 i, p. 327. Papuina arrowensis WALLACE, P. Z. S. 1865, p. 411. 



Known to me by the original description only. 



H. LANCEOLATA Pfeiffer. PI. 11, figs. 4, 5. 



Shell half-covered perforate, pyramidal, acutely carinated, obliquely 

 striate and very delicately undulate-granulose ; above pale brownish, 

 obsoletely banded, below of a blackish blood-red, the keel pale. 

 Spire moderately elevated, apex subglobose ; whorls 5, the two 

 earlier convex, the rest flat above, the last whorl a little convex 

 beneath, descending a little below the carina in front. Aperture 

 oblique, triangular-trapezoidal; peristome violet, margin at the 

 upper insertion slightly expanded, broadly revolute at the outer 

 angle, distinctly reflexed below, and dilated at the columellar inser- 

 tion. (Mis.') 



Alt. 17i greater diam. 28, lesser 22 mill. 



Alt. 17, greater diam. 26, lesser 21 mill. 



Halmaheira, Ternate, Tidore and Moti, Moluccas; Angate, New 

 Guinea. 



H. lanceolata PFR., P. Z. S. 1861, p. 386, t. 37, f. 6 ; Monographia 

 v, p. 328, 501. v. MARTENS, Ostas. Exped. Landschn. p. 320, t. 17, 

 f. 7. DOHRN in Conchyl. Cab. p, 567, t. 168, f. 1, 2. TAPPARONE 

 CANEFRI, Ann. Mus. Civ. Genov. xix, p. 117. 



