NERITINA. 61 



N. AFRA, Sowb. PL 20, figs. 42-44. 



Very slightly striulate, spire somewhat prominent, partially en- 

 veloped by the last whorl, yellowish olive to brownSgr nearly black, 

 reticulated with black, often forming obscure spiral bands; aperture 

 bluish white, columellar area yellowish brown, flattened, the margin 

 finely toothed. Diam. 15-20 mill. 



West Coast of Africa. 



As in most similarly marked species, the interspaces of the reticu- 

 lations sometimes have the appearance of nebulous spots on a dark 

 surface. The synonyms are N. cequinoxialis, Morelet, ^7". Listeri, 

 Reeve (figured), N. Africana, Recluz, N. rubricata, Morelet (figs. 43, 

 44), and N. Calabarica, Mousson. 



N. FRASERI, Reeve. PI. 20, fig. 45. 



Olive black, longitudinally ridged-striate, spire but little exserted; 

 aperture bluish white, columellar margin sinuous arid minutely 

 dentate in the middle, area flattened, yellowish. Diam. 14 mill. 



West Africa. 



This species is unknown to me. 



K SANDALINA, Recluz. PL 20, figs. 46-48. 



Growth strise crossed by ve*ry faint impressed lines, last whorl 

 obtusely shouldered, slightly concave above the shoulder, more or 

 less enveloping the rather high spire, brown to black, sometimes 

 obscurely reticulated; aperture and columellar area bluish white or 

 yellowish, columellar margin sinuous and dentate in the middle. 



Diam. 16-22 mill. 



Sandalwood Bay, Malaysian Archipelago, Viti Is. etc. 



N. cholerica, Gould (fig. 47), N. Vanicorensis, Hombr. (fig. 48), 

 and N. Cajfra, of Garrett are synonyms. There is but little differ- 

 ence between this species and N. propinqua, Mousson in the appear- 

 ance of the shell: the latter has not columellar teeth. 



N. ADUMBRATA, Reeve. PL 20, fig. 49. 



Last whorl a little depressed around, but not enveloping the spire, 

 smooth, shining, yellowish olivaceous to brown, closely or coarsely 

 reticulated with black, or appearing nebulous on a darker ground; 

 aperture bluish white, columellar area flattened, posteriorly orange 

 brown, edge slightly sinuous and minutely dentate in the middle. 



Diam. 18-30 mill. 



Solomon's Is. 



