36 zEixis. 



common. It has many synonyms: N. JiloKa, Gray (tig. 134), 

 N. graphite.ra^ Beck (fig. 185). N. Reeveana, Dnnker (fig. 13fi), 

 N. dispar, A. Ad. (fig. 187', N. lurida, Gould (fig. 138), N. 

 musira, Gould (fig. 139), as well as probably the the following 

 unfigured species , N. Kieneri, Anton, N. ohliquata, A. Ad., N. 

 plicatula, Dnnker. 



The three following species appear to me to be mere varieties 

 of N. picta, perhaps connecting it with N. gaudiosa: 

 Var. MARMOREA, A. Ad. Fig. 140. 



Whitish, marbled Avith yellowish l)rowij, the maculations some- 

 times disposed in two or three bands. Tjength, 1 inch. 



Philippines, sandy mud, at 25 fathoms. — ('umiiig. 

 Tar. ALGiDA. Reeve. Fig. 141. 



Livid olive, blotched with white, and painted longitudinally 



with waved brown streaks. Length, 1 inch. 



Morcton Bay, Australia. 

 Ya.Y. BicALLOSA, P]. A. Smith. Fig. 142. 



Whitish, livid at the sutures. Length, 1 inch. 



West Australia, Swan River, (Jape Natal. 



The double tubercular callus at the base of the columella is 

 not unfrequently developed in very hetivy specimens of other 

 species, and is an individual rather than specific character. 

 N. CONSPERSA, Phil. PI. 11, figs. 143. 144. 



Shell ver}- small, smooth, thick; yellowish or white, maculate 

 with chocolate, forming on the body whorl two irregular bands. 



Length, •4--5 inch. 



Canary Islands. 



Does not difier essentially from N. picla, except by its much 

 smaller size and heavier structure : it maj^ well be a dwarf form 

 of that species. N. Pfeifferi, Phil. (fig. 144), is synonymous. 

 Several authors have recognized this shell as N. glaberrima, 

 Grael., but the description is indefinite, and the figures referred 

 to are unrecognizable. 



N, Haldemani, Dunker. PI. 11. figs. 145, 14B. 



Whitish, marbled with yellowish brown or chestnut zebra-like 

 markings, smooth and polished, initial whorls longitudinally 

 plicate, base of body wliorl with revolving impressed lines. 



Length. "5 inch. 



East Indies. 



