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-J, the last depressed ; aperture rounded oval ; 

 alt. 45 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. sinistrorsa, 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, yellowish- 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 6j, 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: Isle of Pines (Lambert); Prony Bay (Brazier); 



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



Helix singulars PFR., P. Z. S., 1854, p. 290 ; Mai. Blatf. 1855, 



p. 145; Monogr. iv, p. 255. Pseudopartula singularis CROSSE, 



Journ. de Conchyl. 1894, p. 248 Draparnaudia singularis ANCEY, 



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

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

 var. carinatus, magis striatus, GASSIES, Faune Conch. N.-Caled, ii, 

 p. 92 (1871). 



