168 ZONITES. 



corneous or brownish, translucent, spire convex, apex scarcely 

 elevated, suture deep; whorls 4J, regularly increasing, the last 

 not descending. Diam. 4 mill. 



Bourail, N. Caledonia. 



H. KOUTOUMENSIS, Gassies. PI. 52, lig. 88. 



Moderately, deeply umbilicated, sublenticular, convex, verj* 

 minutely striate, yellowish corneous, obsoletely brown-zoned ; 

 whorls 4, regularly increasing, last whorl descending, scarcely 

 larger than the penultimate, suture moderate. Diam. 2 5 mill. 



Ins. Koutoumo, N. Caledonia. 



Subfossil. 



H. DESMAZURESI, Crosse. PI. 52, lig. 89. 



Imperforate or scarcely subrimate, thin, translucent, smooth, 

 shining, brownish corneous, suture submargined, impressed ; 

 whorls 4J, regularly increasing, the last subrotund, somewhat 

 flattened on the base. Diam. 8'5 mill. 



Noumea, N. Caledonia. 

 H. SAVEST, Gassies. PI. 52, figs. 90, 91. 



Scarcely subrimate, orbicularly depressed, thin, translucent, 

 smooth, shining, orange-corneous, suture submargined; whorls 

 4-5, regularly increasing, subrotund, aperture light brownish. 



Diam. 10 mill. 



Thio, N. Caledonia. 



II. ARTENSIS, Souverbie. PL 52, figs. 92, 93. 



Narrowly perforate, orbicularly depressed, thin, subpellucid, 

 orange-corneous, lightly obliquely striulate, subplicatulate to- 

 wards the suture, very thinly spirally striulate above, suture 

 simple, submargined ; whorls 4^, regularly increasing, the last 

 subrotund, periphery obtusely subangulate, base more convex. 



Diam. 75 mill. 



Ins. Art, N. Caledonia. 



%*% Australian and New Zealand Species. 

 H. GEORGIANA, Quoy. PI. 52, figs. 94-90. 



Umbilicated, subdiscoidal, thin, fragile, translucent, brownish 

 yellow, thinly striate above, smooth below ; whorls 4-|, the last 

 obtusely subangulated, depressed in front. Diam. 10*5 mill. 



Port George, Australia. 



