66 I'LACOSTYLUS, NEW CALEDONIA. 



BuJimus scarabus ALBERS, Malak. Bl. i, p. 219 (1854). PFR., 

 Novit. Conch, i, p. 12, pi. 4, f. 12, 13 ; Monogr. iv, p. 447 ; vi, 84; 

 viii, 120 GASSIES, Faune, i, p. 46, pi. 5, f. 2; ii, p. 82. CROSSE, 



J. de C., 1864, p. 123 MARIE, J. de C., 1870, p. 385. FISCHER, 



J. de C., 1871, p. 161-166, pi. 7, f. 5-8) (jaw, teeth and genitalia). 

 Placostylus scarabus SCHMELTZ, Mus. Godeffroy Catal. v, p. 



93 KOBELT, t. c. p. 10, pi. 1, f. 2, 3 CROSSE, J. de C., 1894, 



p. 286, with var. tanouensis^ pi. 10, f. 3 B. scarabus var. tanouensis 



CROSSE, J. de C., 1869, p. 179. 



A more compact, stouter species than P. pseudocaledonicus, always 

 ornamented with bands and lines. Kobelt mentions a specimen 65 

 mill. long. 



Var. tanouensis Crosse (pi. 31, fig. 15). Aperture pale buff inside, 

 the peristome entirely milk white, except that the interior of the 

 columella is purple-brown. Length 53, diam. 31 mill. 



Tanou, one of the Nenemas Is., New Caledonia (Marie). 

 Var. Smithii Kobelt. PI. 33, figs. 5, 6. 



Shell imperforate, ovate, thick, ponderous, rudely obliquely pli- 

 cate-striate, the lower whorls made granulous by very delicate, 

 waved lines, visible under the lens ; whitish covered with a greenish- 

 brown, well-preserved epidermis, which is indistinctly zoned spirally 

 and distinctly streaked and banded with chestnut-brown on the ante- 

 penultimate whorl. Spire convexly conic, the apex buff, slightly 

 obtuse. Whorls 6, regularly increasing, separated by an impressed, 

 strongly crenulate and white-margined suture ; the last whorl sub- 

 angular, slightly compressed, strongly ascending in front. 



Aperture vertical, the base receding, elongate, ovate-auriform, 

 vivid orange-brown within ; peristome reflexed, very much thick- 

 ened, white, the ends joined by a very thick, toothless callus, ridged 

 longitudinally; white outwardly, brownish inwardly; outer lip sin- 

 uated above ; columellar lip depressed, dilated, armed with a com- 

 pressed, but little prominent columellar fold, white outwardly, orange- 

 brown within. Alt. 73, diam. 45, alt. aperture 48 mill. (Kobelt). 



West coast of New Caledonia (Saxton.) 



Placostylus smithii KOBELT, Conchyl. Cab., p. 105, pi. 26, f. 1, 2 

 (1891). CROSSE, J. de C. 1894, p. 287. 



Described from a single specimen in Layard's collection. It differs 

 from P. scarabus in wanting distinct spiral color bands on the last 

 whorl, in the convex columellar fold and in the larger size. 



