74 NERITINA. 



Von Martens separates ^V. vespertina on account of a slight differ- 

 ence in convexity of whorls, and habitat, but in the large series 

 before me from both Taheiti, and Sandwich Is., the supposed local 

 peculiarities disappear. 



N. CHKISTOVALENSIS, Reeve. PL 21, figs. 68, 69. 



Convex, striulate, yellowish, with spiral bauds of reddish chestnut 

 markings ; aperture yellowish, columellar area slightly arcuate and 

 minutely dentate in the middle. Diam. 19 mill. 



San Christoval, Solomon' 's Is. 



N. BICANALICULATA, Recluz. PI. 21, fig. 70. 



Rather depressed and somewhat widely winged ; olive brown, 

 rather closely reticulated and sometimes banded with reddish chest- 

 nut ; aperture bluish white clouded or changing to greyish yellow, 

 columellar margin without teeth, area minutely punctate. 



Diam. 15-20 mill. 



Philippines, Viti Is. 



The ears are usually broader than in the specimen figured, but 

 the depressed form and markings are pretty constant in the series 

 before me. It is N. biauriculata , Reel. 



IS". LECONTEI, Recluz. PI. 22, figs. 74, 75, 76. 



Very convex, with numerous elevated close spiral lines, olivaceous 

 brown, spirally more or less lineated with black ; aperture lead color 

 or yellowish grey; columellar margin incised, minutely and reg- 

 ularly dentate in the middle, area rugose and minutely granular. 



Diam. 1 in. 



New Caledonia. 



N. Novas- Caledonica, Reeve, (fig. 76) is a synonym. 



N. ACICULATA, Morch. PI. 22, figs. 77, 78. 



With small, distinct, obliquely lateral spire, closely radiately 

 striated, dark olivaceous, uni colored ; columellar margin arcuate 

 and dentate in the middle. Diam. 17 mill. 



Nicobar Is.; Sumatra ? 



It is N. navicularis, Morch (undescribed). 



N. MARMORATA, Brazier. Unfigured. Neiv Guinea. 



