68 PLACOSTYLUS, NEW CALEDONIA. 



of Mont Dor, in the interior (E. Marie) ; Prony Bay (Brazier); ar- 

 boreal. 



Bidimus pancheri CROSSE, Journ. de Conchyl., 1870, p. 137, 411, 

 pi. 13, f. 7 ; var. /3, CROSSE, J. de C., 1872, p. 226 ; 1874, p. 102, 

 pi. 2, f. 5. GASSIES, Faune Conch. N. Caled. ii, p. 91, pi. 8, f. 17 



(1871). PFR., Monogr. viii, p. 60 Placostylus pancheri KOBELT, 



Conch. Cab., p. 12, pi. 1, f. 6, 7, and var. (3, p. 13, pi. 1, f. 8, 9. 

 CROSSE, J. de C., 1894, p. 295, with var. Candida. 



Not closely allied to any other species except the more slender P. 

 loyaltyensis. In the typical form the columella is orange-brown, but 

 in the more abundant color-var. Candida Crosse (pi. 33, figs. 1, 4) the 

 whole peristome and shell are white. 



P. LOYALTYENSIS (Souverbie). PI. 43, figs. 7, 8, 9, 10. 



Shell perforate, fusiform, thin, grayish-white with sparsely scat- 

 tered translucent gray dots and spots or streaks, bordered on the left 

 with opaque white. Surface shining, lightly striate, and inconspicu- 

 ously grooved spirally, the spirals often subobsolete. Spire slender, 

 the apex obtuse; early whorls very superficially pitted. Whorls 4J, 

 moderately convex, the last oblong, slender. Suture narrowly 

 margined. 



Aperture oblong-ovate, white within ; peristome expanded, white ; 

 columella dilated above, with a weak entering fold. 



Alt. 29-32, diam. 13, length of aperture 17-18J mill. 



Mare, Loyalty Is. (Montrouzier). 



Bulimus loyaltyensis Souv., Journ de Conchyl., 1879, p. 25, pi. 3, 

 f. 1, and var., f. 2 GASSIES, Faune, iii, p. 42, pi. 4, f. 2 (var.). 

 Placostylus loyaltyensis KOBELT, Conchyl. Cab. p. 32, pi. 7, f. 6-9. 

 CROSSE, J. de C., 1894, p. 296, with varieties sulaurantiaco- 

 fulvida and lactea. 



Allied to the preceding species, but of much more slender form. 

 The typical form is white with an orange-brown collumella ; the 

 variety subaurantiacofulvida is a pale orange-fawn tint with numer- 

 ous small fawn or transparent white spots, the columella orange- 

 brown ; var. lactea is milk white with inconspicuous translucent 

 spots, the entire aperture white. These are doubtless mere varia- 

 tions, not truly varieties. In one of the specimens before me there 

 is a faint sulphur tint within the outer lip. 



