NANINA. 83 



below ; chestnut-colored, lighter and more yellowish on the base, 

 whorls 6J, the last with a peripheral narrow yellowish white 

 band. Diam. 22, alt. 15 mill. 



Ceylon, alt. 8000 ft. 

 N. DOHRNIANA, Pfr. PL 16, figs. 20-22. 



Perforate, rather thin, striulate, smoothish, subdiaphanous, 

 base smoother and more shining ; yellowish gray ; whorls 6J, 

 the last obsoletely angulated on the periphery. 



Diam. 31-5, alt. 15 mill. 



Siam. 

 N. TEXTRINA, Benson. PI. 16, figs. 23, 24. 



Narrowly perforate, rugosely decussated above, smoother 

 below ; light brownish white, becoming milk-white on the base ; 

 whorls 5 J, periphery subangulated. Diam. 29, alt. 13 mill. 



Burmah. 

 N. THBODORI, Phil. PL 16, fig. 25, 



Perforate, thin, subdiaphanous, closely costulate above, decus- 

 sated by concentric impressed lines, base smoother, the sculp- 

 ture being slighter ; yellowish corneous, obsoletely chestnut- 

 margined at the suture, base lighter colored ; whorls 6J, the last 

 obsoletely angulate. Diam. 26, alt. 13 mill. 



Mergui, Burmah. 



N. SOPHIJE, Gaskoin. PL 16, fig. 26. 



Perforate, thin, pellucid, obliquely rugose, very lightly decus- 

 sated by very close spiral lines, smoother below ; light yellowish 

 brown or light reddish brown ; whorls 5, periphery angular. 



Diam. 26, alt. 11-5 mill. 



Lord Howe's Island. 



N. ALBATA, Blanford. PL 21, fig. 14. 



Subperforate, moderately solid, rugosely striate, with distant 

 impressed spiral lines above, smoother below; ivory-white; 

 whorls 5 J, the last subangulate at the periphery. 



Diam. 29, axis 17*5 mill. 



Tinnevelly, India. 



N. BISTRIALIS, Beck. PL 16, fig. 27. 



Very narrowly perforate, thin, fragile, subpellucid, finely 

 striate and with obsolete spiral impressed lines, smoother and 

 polished below ; yellowish corneous, with two approximating 



