54 PLACOSTYLUS, NEW CALEDONIA. 



mella spreading, with a conical descending fold, and connected with 

 the outer lip by a thick callus ; throat orange. Length 85, diam. 42, 

 apert. 46 mill. (Gassies). 



Ouen Island, New Caledonia (Deplanches, type locality) ; Isle of 

 Pines (De" planches). 



Bidimus buccalis GASSIES, Journ. de Conchyl., xviii, p. 141 

 (1870); Faune Conch. Nouv.-Caled., ii, p. 58, pi. 5, f. 1 (1871). 

 PFR., Monogr. viii, p. 20. Bulimus buccalis var. ft scalaris, GAS- 

 SIES, Journ. de Conchyl., xviii, p. 141 (1870) ; Faune Conch. Nouv.- 

 Caled. ii, p. 58 (1871). Placostylus buccalis Gass., CKOSSE, Journ. 

 de Conchyl., 1894, p. 268. 



A " var. scalaris " (undescribed) and a sinistral specimen are on 

 record. The color varies from that described to white under a yel- 

 low epidermis with spaced and strongly contrasting brown stripes, 

 the epidermis being usually much worn. The peristome is very 

 thick, the outer lip strongly thickened within in the middle, often 

 more than shown in the figure, and the short columellar fold and 

 parietal tooth are well developed. The peristome and parietal callus 

 are sometimes almost white, and the interior a fine brownish-orange 

 color. It is close to P. guestieri, but the epidermis is far paler, and 

 the callosities of the somewhat less open mouth are better developed. 



P. GOROENSIS (Souverbie). PI. 13, fig. 5. 



Shell imperforate (subrimate), ovate-conic, compressed, solid, lon- 

 gitudinally rugulose-striate ; white, covered with a somewhat oliva- 

 ceous tawny epidermis, with occasional darker brown or more green 

 streaks. Spire rather long, sub-convexly conic, the apex subacute ; 

 suture impressed, destitute of cuticle. Whorls 7, a little convex, the 

 first 4 destitute of cuticle, whitish, the penultimate whorl subspirally 

 malleate-striate, last whorl slowly ascending, longer than the spire 

 (in the type, being 13-21 the length of the shell), spirally malleated, 

 compressed, tapering basally. 



Aperture subvertical, auriform, bluish-white within, porcellanous ; 

 peristome obtuse, scarcely reflexed, thickened, dull yellowish, glossy, 

 the ends joined by a thick callus bearing a strong, rather deeply 

 placed tubercle in the middle ; right margin broadly sinuated above, 

 basal margin produced forward, columellar margin subvertical, with 

 a long fold above. (Souv.) 



Length 105, diam. 54, length of aperture within 52 mill. 



Goro, New Caledonia (Lambert). 



