14 DRAPARNAUDIA. 



Key to Species of Draparnaudia. 



a. Last whorl acutely carinate, at least in front. singularis, p. 14. 

 a. 1 Last whorl rounded, or at most bluntly angular in front. 



b. Whorls 5^, the last depressed; aperture rounded oval ; 

 alt. 4-5 mill. turgidula, p. 16. 



b. 1 Whorls 6^-7 ; size larger. 



c. Last whorl depressed, expanding toward the aper- 

 ture ; peristome thin, well expanded; diam. about 

 four-fifths the alt. st'nistrorsa, p. 15, 



c. 1 Last whorl rounded or somewhat flattened peripher- 

 ally, not dilated toward the aperture. 



d. Pointed-ovate, dark brown, the diam. two- 

 thirds the alt.; umbilicus narrow ; lip 

 narrowly expanded and thickened. 



crossei, p. 17. 



d. 1 Short and stout, the lip not expanded or 

 thickened ; diam. three-fourths the alt. 



lifuana, p. 17. 

 D. SINGULARIS (Pfeiffer). PI. 3, fig. 1. 



Shell sinistral, openly umbilicate, trochiform, yeUoivish-chestnut 

 colored. Surface rather glossy, sculptured with rather coarse, very 

 oblique wrinkles of growth, and fine spiral lines on the base. Spire 

 conic with noticeably concave lateral outlines. Whorls 6|, the last 

 depressed, acutely carinated at the periphery, the keel usually serrated 

 a little ; suture descending a little below the keel in front. Aperture 

 extremely oblique ; peristome well expanded, white, the upper mar- 

 gin arched, basal more or less straightened. 



Alt. 10, diam. 9.4; longest axis of aperture 6.5, width 4.5 mill. 

 (Kanala). 



Alt. 8.5, diam. 7.5 mill. (Prony Bay). 



New Caledonia: Tsle of Pines (Lambert); Prony Bay (Brazier) ; 

 Kanala (Dupuy). New Hebrides : Aneiteum (Macgillivray, Layard). 



Helix singularis PFR., P. Z. S., 1854, p. 290; Mai. Bliitf. 1855, 

 p. 145; Monogr. iv, p. 255. Pseudopartula sini/iilnris CROSSE, 

 Journ.de Conchyl. 1894, p. 24s Draparnaudia singularis AXCEY, 

 Nautilus, July, 1897, p. 27 ; Ann. Mus. d' Hist. Nat. Marseille, 

 Bull., i, p. 147 (1898), with var. major Anc. Bnliinm sinistrorsus 

 var. carinafits, magis striatus, GASSIES, Faune Conch. N.-Calrd, ii, 

 p. 92 (1871). 



