PLACOSTYLUS, NEW CALEDONIA. 51 



P. GUESTIERI (Gassies). PL 10, fig. 27 ; pi. 24, figs. 9, 1] ; pi. 25, 



figs. 15, 16. 



Shell imperforate, ovate-conic, compressed from front to back, 

 solid ; white under a yellowish-chestnut cuticle, streaked with darker 

 reddish or blackish chestnut. Surface sculptured with longitudinal 

 growth-wrinkles (much too prominent in the figures) and lightly 

 malleated spirally. Whorls 6J-7, but slightly convex, the last one 

 oval, ascending in front. 



Aperture ovate, deep orange within or pale and ochreous in the 

 throat; peristome yellowish-white or fleshy-white, broad, though 

 hardly reflexed. thick, and blunt or keeled ; the outer lip with a 

 shallow sinus above ; columella whitish, having a strong callous fold ; 

 parietal callus whitish, with a small or moderate whitish tubercle. 



Length 86, cliam. 40 mill. (type). 



Length 97, diam. 53, aperture 63 mill. 



Ouvea, Loyalty h. (Lambert); Mont-Dor (Marie). 



Bulimus guestieri GASSIES, J. de C., 1869, p. 72 ; Faune Conch. 

 N.-C., ii, pp. 74, 192, pi. 3, f. 11 ; iii, p. 46. PFR., Monogr. viii, p. 

 20. Placostylus guestieri KOBELT, t. c., p. 69, pi. 17, f. 1. CROSSE, 

 Journ. de Conchyl., 1894, p. 266. Bulimus souvillei var. gatopensis 

 CROSSE, J. de C., 1870, p. 242 and 414 Plac. guestieri v. gato- 

 pensis CROSSE, J. de C., 1894, p. 267, pi. 10, f. 2. Bulimus cica- 

 tricosus GASSIES, Faune, ii, pi. 4, f. 2 (but not the descriptive text). 

 Placostylus cicatricosus KOBELT, t. c., p. 90, pi. 22, f. 3, with var. 

 orientals, f. 1, 2. CROSSE, J. de C., 1894, p. 269. ? Placostylus 

 (bavayi var.?) rhinocheti KOBELT, t..c., p. 75, pi. 18, f. 1 (1891). 



A smaller species than P. souvillei, with thicker peristome, and 

 pallid columella and parietal callus. It is closely allied to P. boul- 

 ariensis, goroensis and buccalis, and its union with the latter two may 

 become necessary. Fig. 11 of pi. 24 is a copy of the original figure, 

 which however represents a small form rather than the usual develop- 

 ment of the species, which ordinarily attains a length of 90 to 100 

 mill. The var. alba is merely a white-lipped specimen ; var. major 

 being larger, length 110 mill. It is from Mont Dor. Which of the 

 two localities given supplied the type is not known. 



Var. gatopensis Crosse. (PI. 24, fig. 10.) " A shell of medium 

 size, with the spire denuded and roseate, the latter two whorls (and 

 particularly the last) covered with a very peculiar greenish-olive 

 epidermis, upon which some brownish and inconspicuous transverse 



