NANINA. 25 



N. MAUBITIANELLA, Morelet. PL 6, figs. 96, 97. 



Imperforate, umbilical region impressed, upper surface rather 

 rugosely striate, base smoother ; horn-color or yellowish brown, 

 the peripheral angle often a narrow darker band, lip flesh-brown. 



Diam. 17, alt. 10-12 mill. 



Mauritius. 



Is very like a N. inversicolor in miniature. 



N. RUFOZONATA, H. Adams. PL 6, fig. 100. 



Scarcely perforate or imperforate, umbilical region impressed, 

 closely rugosely arcuately striate above, smoother below ; light 

 yellowish brown, with a dark chestnut band on the obtusely an- 

 gulated periphery, and a broader band at the suture ; whorls 6. 



Diam. 15, alt. 8*5 mill. 



Mauritius. 



N. NEVILLI, H. Adams. PL 6, fig. 98. 



Scarcely perforate, somewhat solid, closely arcuately striated 

 above, the striae granulose ; yellowish brown ; whorls 8, the last 

 not descending at the aperture, subangulate on the periphery ; 

 margin of aperture acute, labiate within. Diam. 12, alt. 7 mill. 



Mauritius. 



Differs from N. rufozonata in having no bands, but two ad- 

 ditional whorls, although smaller, and in some minor particulars. 



X. DETECTA, Fer. PL 5, figs. 75-77 ; pi. 6, figs. 3, 4. 



Imperforate, lenticular, strongly keeled, costulately striate; 

 whorls 5i, keel prominent, in all the whorls appressed to the 

 suture; yellowish brown. Diam. 14, alt. 6 mill. 



Ins. Bourbon. 



N. Bewsheri, H. Adams (fig. 77) is certainly a synonym, and 

 I think that N. Frappieri, Desh. (figs. 3, 4) ma}' also be placed 

 here. 



X. BARCLAYI, Benson. PL 6, figs. 1, 2. 



Minutely umbilicated, horny, rough, rudely obliquely lightly 

 striated; whorls 5 to 6, with margined suture, last whorl ob- 

 tusely keeled, more convex beneath. Diam. 5, alt. 3 mill. 



Mauritius. 



N. Eudeli, Desh. (fig. 2), the sole example of which was 

 crushed after being drawn, but prior to description, may possi- 

 bly be this species as surmised by Nevill; it appears, however, 



