70 NERITIXA. 



or two short spines above, but mostly without them ; aperture bluish 

 white, columellar area flattened, subrugose, sometimes bounded by 

 a callous orange-brown fasciole, edge incurved in the middle and 

 dentate there, and slightly so above the curve. Diam. 15-24 mill. 



Moluccas, Philippines, Viti Is. 



N. inconspicua, Busch is a juvenile, and N. subocellata, Schepmann 

 (fig. 70). a spinose specimen ; other synonyms are^\ T . solium, Recluz, 

 =X. dolium, Rve., (fig. 72). I suspect that this will, after all, prove 

 a smooth form of N. bicolor, Recluz. Mousson has described a var. 

 VitiaiKi. 



N. FLAVOVIRENS, Busch. PL 26, figs. 76, 77. 



Lightly striulate, shining, greenish with yellow, black-margined 

 maculations, sometimes a few spines at the suture ; aperture bluish- 

 white, columellar margin with a denticulate sinus, terminated by a 

 larger tooth above and below, area convex, very slightly punctate 

 rugulose, Diam. 15 mill. 



Java, Borneo, etc. 



The synonyms are N. emergens, Mouss., N. Cochinsince, Recluz, 

 N. cyanostoma, Morelet (fig. 77). 



N. SPIXIPERDA, Morelet. PI. 26, fig. 78. 



Uniform olive green, roughly longitudinally ridged, ridges some- 

 times articulated, young shells with an obtuse shoulder bearing an 

 occasional short spine ; aperture bluish or livid white, columellar 

 area callous, dilutely maculated with orange color or greyish green, 

 margin arcuated and dentiulated, with a median larger tooth and 

 another below. Diam. 18 mill. 



Ins. Nossi-be, near Madagascar. 



Perhaps a variety of N. bicolor, Recluz. 



N. FULIGIXOSA, Busch. PI. 26, fig. 79. 



Plicately striate, shining, olivaceous brown, with numerous pallid 

 dots scarcely visible ; aperture whitish, black-bordered ; columellar 

 area white, plane, faintly rugose, margin arcuate and dentate in the 

 middle, with a larger tooth above and below. Diam. 13-15 mill. 



Batavia. 



X. Bataviemis, Mousson, is a synonym. 



N. ACULEATA, Gmelin. PL 26, figs, 80, 81. 



Shell with revolving ridges elevated into nodes and short spines, 

 olivaceous brown ; aperture bluish white with yellowish bands, col- 



