4h HI MA. 



N. SCABRIUSCULA. Powis. PI. 14, figs. 2oo-2.>f). 



Brownish, or 'usually ash-color, with a superior white band, 

 which is occasionally visible on the spire ; revolving lines some- 

 times chestnut-brown. Length, M5--7.") inch. 



Panama. 



X. collaria, Gould (fig. 234), and X. Stimpwntana, C. H A-!. 

 (fig. 235), appear to be equivalent forms. 



N. NODATA, Hinds. PI. 14. fig. 2:jr>. 



Yellowish brown, with one or two faint chocolate bunds. 



Length, *8 inch. 



Mraitx of Malacca. 

 X. FASCTATA, Lam. PI. 14. figs. 0^7. 2;$s. 



Whitish, with a central chestnut band, tinged with chestnut 

 at the base. Length, M)5-'9 inch. 



The whole surface of this species is beautifully gnmulated. 



X. FKSTIVA. Powis. IM. 14, figs. 2;U)-242. 



Longitudinal ribs coarsely latticed by strong, close, rounded, 

 revolving riblets. Whitish, interstices of riblets chestnut or 

 ehocolate color; columella and lip white. Length. '7-'85 inch. 



\. fcalniu is said to have been dredged by C liming at Panama 

 and St. Elena (in sandy mud at six to ten fathom*:, but i 

 not aware that either locality has been confirmed. The next 

 species (N. dent if cm. Powis) is a native of those regions, but is 

 constantly distinguished by being thinner, more swollen, and 

 dark chocolate color within and without. The Japanese habitat 

 is undoubted. The synonyms are X. lirata, Dunker (fig. 240). 

 A'. (It'.albrifti, A. Ad. (fig. 241 I,M somewh;it narrower form, usually 

 white, with a central brown baud it might perhaps be dis- 

 tinguished as a variety, and N. actftidextata, K. A. Smith (fig. 



X. DKNTIKKKA. Powis. PI. 14. figs. "2 4o - I?4.~>. 



( 1 hocolate-brown within and without, witli occasionally an 

 obscure lighter central band. Length. -T-'S") inch. 



l*iinnnm to < 



A", nn'ul f.ntaia. Powis ( fig. 244), is an immature shell, and a 

 -till younger one is .V. T^-hmiii. Troschel (fig. -24.". . To th 



