ZONITES. 167 



*** New Caledonian Species. 

 H. SUBNITENS, Gassies. PI. 52, figs. 76, 77. 



Narrowly umbi Heated, minute, discoidal, shining, very lightly 

 strinlate, brownish corneous; whorls 4, subhorizontnl, flattened, 

 suture well impressed, last whorl not descending. 

 Diam. 2-2'5 mill. 



New Caledonia. 

 IF. HAMELTANA, Crossc. PI. 52, figs. 78, 79. 



Narrowly nmbilicated, depressed, discoidal, lenticular, thin, 

 translucent, smooth, shining, reddish corneous, suture impressed ; 

 whorls 3^, the last large, base planate, aperture subhorizontal, 

 brownish within. Diam. 3 mill. 



New Caledonia. 

 H. NOUMEENSIS, Crosse, PI. 52, figs. 80-81. 



Shell with moderate umbilicus, depressed, discoidal, tliin, 

 fragile, scarcely striulate, dark violaceous brown, spire planate, 

 the apex a little concave, suture impressed ; whorls 6, slowly 

 increasing, the last inconspicuously angulated, aperture brown. 



Diam. 6 mill. 



Noumea, N. Caledonia. 



II. XANTHOCHROA, Crosse. PL 52, figs. 82, 83. 



Widely umbilicated, depressed, planorbiform, smooth, corneous 

 yellow, apex concave, blackish; whorls 7, slowly increasing, with 

 deep suture, the last rounded, with flattened base. 



Diam. 3'5 mill. 



Hab. unknown. 

 H. PERROQUINTANA, Crosse. PL 52, figs. 84, 85. 



Narrowly umbilicated, depressed, planulate, thin, translucent, 

 a little shining, olivaceous, spire depressed, the apex barely 

 prominent, suture deep; whorls 4, regularly increasing, the last 

 large, depressed, rounded, base lighter colored, aperture still 

 lighter. Diam. 7 '75 mill. 



South Bay, N. Caledonia. 



A variety has been described, lighter colored, a little larger, 

 the peristome whitish, the basal and columellar lips a little 

 thickened within. Diam. .9 mill. 



II. BOURAILENSIS, Gassies. PL 52, figs. 86, 87. 



Ver}' narrowly umbilicated, convex, thinly striulate, yellowish 



