50 PLACOSTYLUS, NEW CALEDONIA. 



P. BOULAKIENSIS (Souverbie). PI. 13, fig. 4. 



Shell imperforate, ovate-conic, elongate, solid, subcompressed, 

 longitudinally rugose-plicatulate, striate ; pale fleshy, covered with a 

 tawny-chestnut cuticle, streaked with darker, and encircled' with a, 

 few inconspicuous blackish spiral lines. Spire conic, with slightly 

 convex outlines, the apex sub-acute ; suture impressed, delicately 

 crenulated, more or less denuded of cuticle, and whitish. Whorls 7, 

 but little convex, the earlier 3 or 4 denuded of cuticle, pale fleshy, 

 the penultimate whorl spirally obsoletely malleate striate ; last whorl 

 ascending, longer than the spire (being three-fifths the total length), 

 rather long ovate, tapering basally, spirally inconspicuously striated 

 or more or less malleate. 



Aperture nearly vertical, rather long ear-shaped, angular above, 

 vivid purplish-orange inside, becoming paler and somewhat green 

 tinted far within, very glossy ; peristome obtuse, scarcely reflexed 

 outwardly, somewhat orange-tinted fleshy ; the ends joined by a thick 

 callus which bears a strong and rather acuminate tubercle in the 

 middle ; the right margin obtuse, thickened within at the insertion 

 above the aperture, then narrower, broadly sinuated, and again thick- 

 ened vertically ; columellar margin nearly flat, bearing a long fold 

 ascending to the tubercle. 



Length 96, greater diam. 43, lesser 34; aperture 45 mill, long, 19 

 wide. 



Length 95, greater diam. 44, lesser 36 ; aperture 48 mill, long, 18 

 wide. 



Length 78, greater diam. 38, lesser 29; aperture 37 mill, long, 14 

 wide. 



Woods around the Bay of Boulari (Lambert). 



Bulimus boulariensis Souv., Journ. de Conchyl. 1869, p. 417; 

 1870, p. 81, 422. GASSIES, Faune Conch. N. C., ii, p. 60, pi. 1, f. 

 12, 1871. PFR., Monogr. viii, p. 18. Placostylus boulariensis 

 CROSSE, J. de C., 1894, p. 265.? ? KOBELT, 1. c., p. 83, pi. 20, f. 

 1, 2, 1891. 



This may prove to be a form of P.jibralus. Souverbie's type in 

 the Bordeaux museum has not been figured, but Gassies figures a 

 specimen from the same locality and doubtless authentic. I share 

 Cross e's doubts of the authenticity of the specimens figured by Ko- 

 belt. 



