TRITIA. 57 



middle, and the other somewhat below ; aperture bluish white, 

 showing the external banding. Length, 13'5 mill. 



Patagonia. 

 N. T^NIOLATA, Phil. PI. 18, fig. 373. 



Yellowish brown, tipped with chocolate on the nodules. 

 Length, 11-16 mill. 



Chonos Isl. and So. Patagonia. 

 Is not jV. Coppingeri the same ? 



* Japan, Philippines, Indian Ocean, W. Africa. 

 N. NIVEA, A. Ad. PI. 17, fig. 326. 



White, solid. Length, 1 inch. 



Philippines. 

 Very like N. reticulata, Linn., of Europe. 



N. MUNIERIANA, Crosse. PI. 17, fig. 331. 



White, with a scarcely apparent pale brown revolving band. 

 Length, 16 mill. 



So. Australia. 

 N. SIGN ATA, Bunker. PI. 17, figs. 327, 328. 



Yellowish brown, with a pale central band. Length, *4 inch. 



So. Africa. 



Very like N. incrassata, but without the external lip-varix. 

 N. regularis^ Kiister (fig. 328), is probably the same. 



N. TURBINEA, Gould. PI. 17, fig. 329. 



Shell white. Length, '9 inch. 



Africa. 



I am not acquainted with this species. The precise locality 

 is unknown. 



N. ROISSYI, Deshayes. PL 17, figs. 330, 332. 



Whitish, rather thin ; clathrate. Length, 15 mill. 



East Indies. 



N. dominula, Tapparone-Canef'ri (fig. 332), does not appear to 

 differ. 



N. PUMILIO, E. A. Smith. PI. 17, fig. 333. 



Whitish corneous. Length, 3*5 mill. 



Wydah, W. Africa. 



Is this really distinct from the preceding species? At any 

 rate the shell is so decidedly immature that it ought not to have 

 been described. 



