46 HELIX-PAPUINA. 



Only one specimen of this species was found. It has a thick, 

 solid, white reflected lip 5 mill, broad, and the interior of an intense 

 purplish-chestnut. 



It also resembles, in its markings, Helix Brazierce Braz., from 

 Yule Is., and Helix tawnantias Tapparone Canefri, from the Fly 

 and Katau Rivers, New Guinea. (Brazier.) 



Alt. 24, greater diam. 39, lesser 30 mill. 



Maclay Coast, North-eastern New Guinea. 



H. maclayiana BRAZ., Proc. Linn. Soc. N. S. Wales, x, p. 841, 

 1886. H. maclayana TAPP. CAN., Ann. Mus. Civ. Genov. 2d. Ser. 

 iv, p. 138, 1887. 



(9.) GROUP OF H. FLEXILABRIS. 



Im perforate, turbinate, the surface corrugated by oblique, forward- 

 descending wrinkles. This group is very closely allied to the fol- 

 lowing one. 



H. VEXILLARIS Pfeiffer. PI. 14, figs. 4, 65, 66, 67. 



Imperforate, elevated, trochoidal, sculptured with rather coarse 

 forward-descending wrinkles ; opaque white above, the base olive or 

 olive-brown. 



The spire is conical, straight-sided; whorls 5J, slightly convex, 

 the last bluntly angular at the periphery, rather flattened beneath, 

 not descending in front. The surface has rather separated and 

 coarse obliquely descending wrinkles, the base polished, with fine, 

 subobsolete spiral striae. Aperture very oblique, white within ; 

 peristome white, expanded, reflexed, the outer and basal lips narrow, 

 columella white, long, sloping, dilated into a flat plate and appressed 

 to the base, deeply inserted. 



Alt. 22, greater diam. 20, lesser 16 mill.. 



Alt. 21, greater diam. 20, lesser 17 mill. 



New Georgia, /Solomon Is. 



H. vexillaris PFR., P. Z. S. 1855, p. 113 ; Novit. Conch, i, p. 109, 

 t. 31, f. 5, 6 ; Mouogr. iv, p. 201. DOHRN, Contin. of Conchyl. Cab. 

 p. 593, t. 174, f. 5-7. H. phthisica PFR., P. Z. S. 1856, p. 383; 

 Mai. Bl. 1856, p. 239 ; Novit. Conch, i, p. 110, t. 31, f. 7, 8 ; Mon. 

 Hel. Viv. iv. p. 201. 



The contrast between the olive base and white or bluish upper 

 surface, and the coarse wrinkling are the more striking characters 

 of this shell. Pfeiffer described the narrower form as a distinct spe- 





