NANINA. 21 



N. NASUTA, Metcalfe. PL 3, fig. 42. 



Subiinperforate, very thin, obliquely striated, with light, very 

 small concentric lines, waxy pellucid, very light greenish cor- 

 neous ; whorls 5^, suture ridge-margined, last whorl not descend- 

 ing in front, acutely carinated. Diam. 36 mill. 



Borneo. 



Unfigured Species. 



N. TAIVANICA, Mollend. Formosa. 



N. LINDSTEDTI, Pfr. Malacca. 



N. SARAWAKANA, Dohrn. Borneo. 



Subgenus CCELATURA, Pfr., 1877. 



N. C(ELATURA, Fer. PI. 3, fig. 43. 



Imperforate, rather solid, the incremental strise distinct, 

 crossed by irregular distant revolving lines ; whorls 4 or 5, dark 



brown ; lip somewhat thickened. Diam. 28 mill. 



7ns. Bourbon. 



The synon}^my includes N. exarata, Wiegm, and N. rufina, 

 Jay. 



N. DUPONTI, Morelet. PL 3. figs. 44, 45. 



Imperforate, solid, with crowded oblique striae, and distant 

 spiral sulci ; reddish brown; whorls 5, the last deflected in 

 front; lip thickened, its extremities connected by a parietal 



callus. Diam. 40 mill. 



Mauritius (subfossil I. 



N. sulcifera, Barclay (fig. 45), is considered a synonym. 



N. BEWSHERIANA, Morelet. PL 3, fig. 48. 



Imperforate, arcuately costate-striate ; whorls 5^, the last ob- 

 tusely angulated on the peripher}', angle evanescent towards 

 the aperture ; peristome angularly incurved above ; bleached 

 white. Diam. 33, alt. 19 mill. Ins. Rodriguez. 



Subfossil. 



N. SIMPLEX, Lam. PL 3, fig. 47. 



Imperforate, obliquely striate, light reddish brown, with 



darker fasciations, apex reddish. Diam. 40 mill. 



Amboina. 

 A doubtful member of the group. 



