PLACOSTYLUS, \F.\V CALEDONIA. G7 



Iii many specimens of P. s<-arat>nx the parietal callus lias a low 

 longitudinal ridge, inside of which the color abruptly changes. 

 Var. <i<>i<lraiiifns!s Kohelt. PI. .'!;>, fig. 7. 



Rudely and irregularly costate-striate. malleated ; rose-white cov- 

 ered witli a yellowish-brown epidermis streaked with darker. Last 

 whorl compressed, distinctly annulate*! on the left side, ascending in 

 front. Aperture bright orange-brown inside, peristome scarcelv 

 e.\[ianded, thickened, white; parietal callus reddish changing to 

 brownish within. Columellar margin dilated, bearing a prominent, 

 compressed, hardly entering fold. 



Alt. ; 1. iliam. ;>S, alt. apert. 39 mill. 



Near Cap?. (Jim/rain, west coast of New Caledonia (Saxton). 



rinmsh/liis ijnulraiiiensis KOI'.F.I.T, t. c., p. 109, pi. 2C>, f. .3, 6 

 (1891). P. smilln'i var. gonh-alneiisis Cijosse. .]. de ('., 1894. p. 287. 



Section LcucochariK Pilsbry, 1900. 



Slender, thin, arboreal forms, white or but slightly gultate, only 

 H apical irhorh pitted. 



These forms have no close relationship with Chan's ami As/xtxt/m, 

 with which (.'rosso associates them. They are peculiar in the reduc- 

 tion of the nepionic pitted shell to 1^ whorls. They seem to have 

 no closer aih'nity with species of other island groups than the common 

 bond uniting all the Placostyles ; the slender contour, light texture 

 and pale color being purely adaptive characters, assumed with arbor- 

 eal habits and independently, by various species of Placostylus and 

 of other groups of land snails. 



P. PAXCIIKRI (Crosse). PI. 33, ligs. 1-4. 



Shell compressed-umbilicate, oblong-fusiform, thin, gray-white; 

 surface shining, sculptured with slight growth -strire and on the last 

 whorl, close, irregular, frequently anastomosing or interrupted, spiral, 

 white wrinkles. Spire rather slender, the apex rather obtuse ; early 

 whorls hardly punctate. Whorls 4^, quite convex, the last more in- 

 flated ; suture often narrowly margined. 



Aperture oval, gray-white inside; peristome thin, narrowly re- 

 flexed, white ; columella dilated aboye, typically orange-brown ; the 

 fold not visible from in front, being slender and deep-seated. 



Alt. 36, diam. 16|, length of aperture 21 mill. 



New Caledonia: Boulari, in the mountains (Pancher) ; environs 



