30 NANINA. 



brown ; whorls 44, rapidly increasing, the last obliquely de- 

 pressed, dilated in front; aperture oblique, lip white, inflexed 

 nnd thickened in old specimens, the extremities connected by a 

 parietal callus. Diam. 52, alt. 25 mill. 



Caroline Islands. 



The synonyms are N. Hogoleuensis, Le Quill., and N. pachis- 

 toma, Hombr. et Jacq. 



N. DISTINCTA, Pfr. PI. 8, fig. 26. 



Umbilicated, rather thin, witli growth-lines, and lightly im- 

 pressed spiral striae, slightly vermicularly rugose above, less 

 distinctly so below; varying- from light yellowish brown to 1 

 salmon-brown, the darker colored specimens with a light band 

 on the scarcely angulated periphery ; whorls 5^, lip thin.' 



Diam. 56, alt. 32 mill. 



Cochin China, Siam. 

 X. OVUM. Yal. PI. 8, fig. 29. 



Imperforate when adult, solid, obliquely striate, sparsely 

 spirally lineate and very lightly venniculate ; yellowish brown 

 or chestnut-brown, unicolored, or with n light band above the 

 periphery, and a darker band below it; whorls 5, the last with 

 an obtuse peripheral angle, above which it is obliquely de- 

 pressed, suture well impressed, base excavated around the 

 umbilicus, into which a columellar callus is deeply impressed; 

 aperture white. Diam. 115, alt. 70 mill. 



/>. of Luzon tirul Fancy, Philippines. 



It is N. meridionalis, Wood, N. Otaheitana, Fer., N. Tahei- 

 tana, Hartm. 



N. RHEA, Pfr. PI. 9, fig. 30. 



Imperforate when adult, solid, siriaic and with deeply .im- 

 pressed vermicular sulci, giving the surface a rugose appear- 

 ance ; chestnut-colored, darker on the b.-tse, the periphery with 

 a light colored band, and a darker one below it ; whorls 5, round- 

 shouldered below the suture, the last obsoletoly angled at the 

 periphery, obliquely flattened above, rounded beneath; aperture 

 white, the columellar callus deeply impressed into the umbilicus. 



Diam. 69, alt. 37 mill.. 



/*/. Panay, Philippines. 



Much more rugosel}' sculptured than .V. orum, with more 

 shouldered whorls. 



