NERITINA. 59 



aperture yellowish, with marginal border of blood red, the latter 

 color extending over the columellar area, edge edentulous. 



New Ireland, on stones in mountain streams. 



N. POWISIANA, Recluz. PL 19, figs. 28, 29. 



Last whorl partially enveloping the spire, raised into a ridge 

 towards the aperture, yellowish olivaceous, reticulated or spotted 

 with black, sometimes faintly banded with violaceous upon which 

 are nebulous light spots; aperture and area olive yellow, columellar 

 margin edentulous. Diam. 20 mill. 



New Ireland, on stones. 



Var. IMMERSA, Martens. Fig. 29. 



Pale violaceous with darker bands, with white, black-bordered 

 triangular markings; aperture yellowish. . 



Japan ? 



N. ASPEBULATA, Recluz. PI. 19, figs. 30, 31 ; PL 20, fig. 32. 



Whorls very rapidly increasing, somewhat flattened above a very 

 obsolete shoulder-angle, spire minute, but visible, not raised, spirally 

 and longitudinally somewhat roughly striate, the spiral lines im- 

 pressed, olivaceous brown, transversely reticulated with black, 

 epidermis thin, rough, not shining, aperture bluish white to light 

 yellowish, columellar margin edentulous. Diam. 16-25 mill. 



East Indies, N. Caledonia, Philippines. 



I think that N. arcifera, Morch (fig. 32), will prove synonymous, 

 or at most a variety with somewhat more produced spire. 



N. PENNATA, Born. PL 20, fig. 33. 



Semiglobose, slightly striate, somewhat shining, olivaceous or 

 brownish with subtriangular black spots often in oblique series; 

 aperture and columellar area yellowish to orange color, margin 

 concave, numerously minutely toothed. Diam. 16-25 mill. 



East Indian Archipelago. 



N. piperina, Chemn. is the young of the species. 



N. HIEROGLYPHICA, Wattebled. PL 20, fig. 34. , 



Conically globose, solid, shining, scarcely striulate longitudinally, 



brownish olivaceous, with zigzag dark brown or blackish markings; 



aperture and columellar area bluish white or slightly yellowish, 



columellar margin concave, minutely dentate. 

 Diam. 22, alt. 34 mill. 



Annam. 



