PLACOSTYLUS, NEW CALEDONIA. 57 



cending, dilated, armed at its insertion with a thick, indistinctly 

 doubled fold. Length 92, diam. 46, length of aperture with peri- 

 stome 53 mill. (Kobelt.^ 



Neckliai, on the west coast of New Caledonia. (Unique type in 

 Layard's collection.) 



Placostylus (mariei var.?) necUiaiensis KOBELT, Conchyl. Cab., 

 Placostylus, p. 116, pi. 28, f. 5, 6 (1891). P. neckliaiensis CROSSE, 

 J. de C., 1894, p. 279. 



More lengthened than P. mariei, and differing in the spiral sculp- 

 ture, which resembles that of P. imbricatus. It is probably nearest to 

 P. porphyrostomus. 



P. PORPHYROSTOMUS (Pfeiflfer). PI. 28, figs. 31, 32, 33, 34. 



Shell imperforate, oblong-conic, very solid and heavy, whitish or 

 flesh-pink, with slight traces of a thin yellow or brownish cuticle, 

 which is completely or almost worn off in adults. Surface dull, rudely 

 wrinkle-striate. Spire conic, the apex rather obtuse. Whorls about 

 6J, slightly convex, the last not ascending in front. 



Aperture vertical, contracted, deep blood-red or chocolate inside ; 

 peristome white, somewhat expanded, very much thickened and built 

 forward, the outer lip with a moderate rounded sinus above, thicker 

 toward the insertion, calloused again below the sinus ; columella very 

 broad, with a very heavy oblong tubercle above ; parietal callus 

 white, bearing a rather narrow tubercle, which is deeply placed and 

 sometimes is small or wanting. 



Alt. 74, diam. 32 mill. 



Alt. 72, diam. 34 mill. 



Alt. 59, diam. 28 mill. 



Southern New Caledonia, from Bourail on the west to Goro on the 

 east coast, including the southern islets, but wanting in localities de- 

 ficient in lime, notably at South Bay. Common at Noumea and the 

 I. of Nou (Marie). 



Bulimus auris-bovina REEVE, Conch. Iconica, Bulimus, f. 185, 

 1848 (not of Bruguiere). Bulimus porphyrostomus PFEIFFER, Proc. 

 Zool. Soc. London, p. 261 (1851); Monogr. iii, p. 377; iv, p. 446; 

 vi, 82; viii, 117 Bulimus lessoni PETIT, Journ. de Conchyl., iv, p. 

 404, pi. 11, f. 6 (T853). Bulimus porphyrostomus GASSIES, Faune, 

 Conch. Nouv.-Cal6d., i, p. 43, pi. iv, f. 3, 1863; ii, p. 77, 1871. 

 CROSSE, J. de C., xii, p. 119, 1864 MARIE, in J. de C., xviii, p. 



