NERITINA. 71 



umellar margin slightly concave, multidentate, area flattened, mi- 

 nutely punctate. Diam. 18-25 mill. 



Indian Archipelago. 

 It is N. squamcespina, Moussoii and N. sulqtta, Nyst. 



N. CIRCUMVOLUTA, Kecluz. PL 26, fig. 82. 



Smooth, fulvous, or pink, with minute white maculations, with 

 two or three spiral black bands articulated with white; aperture 

 bluish white, the columellar margin slightly arcuate and minutely 

 dentate in the middle, with a stronger tooth at either extremity. 



Diam. 18 mill. 



Ins. Negros, Philippines ; on stones in a mountain stream. 



N. LUCTUOSA, Kecluz. PL 26, fig. 86. 



Shell small, smooth, greyish, with close undulating black striga- 

 tions ; columellar area plane, narrow, whitish defined on the middle 

 and base by n semicircular line, margin slightly arcuate in the 

 middle, the tooth above the sinus prominent. Diam. 3'5-7 mill. 



Neiv Guinea, Norfolk Island. 



N. PEGUENSIS, Blanford. PL 26, fig. 87. 



Striulate, shining, greenish or yellowish olivaceous, sometimes in- 

 distinctly darker banded, covered with minute white dots, shaded in 

 front with brown or black ; aperture bluish white, columellar area 

 bluish grey, slightly corrugated, margin slightly sinnousjn the mid- 

 dle, the sinus and above it minutely toothed, with a stronger tooth 

 between. Diam. 14 mill. 



Irawadi River, Pegu, Burmah. 



It is N. fuliginosa, Theobald. 



N. RETIFERA, Benson. PL 26, figs. 88, 89. 



Lightly striulate, yellowish olivaceous or greenish, with oblique 

 angulated reddish or blackish lines, sometimes forming a coarse re- 

 ticuliitioii ; aperture bluish white, columellar margin incurved and 

 minutely dentate in the middle with a stronger tooth at the top, 

 area somewhat convex, wide, whitish. Diam. 9-12 mill, 



Calcutta, Madras. 



The synonyms are N. Michaudi, Kecluz, (fig. 89) N. retieularis, 

 Sowb., N. capillulata, Gould, of Sowb., N. Morchiana, Fraueu., N. 

 huineralis, Theob. Perhaps N. fulgetrum, Keeve (PL 12, fig. 30) 

 which I have described on p. 38, and for which no habitat is given, 

 should also be referred here. 



