24 NANTNA. 



N. RECEDENS, Pfr. PL 5, fig. 78. 



Imperforate, solid, closely costulately striate above, light flesh 

 color; whorls 6, narrow, carina brown-banded, base flattened and 



striate. Diam. 12 mill. 



Hob. unknown. 

 N. KASHMIRENSIS, Nevill. PL 5, figs. 13-15. 



Umbilicus narrow, subplicate above, smoother below, minutely 



punctate. Diam. 7'5, alt. axis 3*75 in. 



Sonamarg, Kashmir. 

 N. IMPLICATA, Nevill. 



Shell like N. semicerina, but entirely smooth, whorls more 

 depressed and concave, the last scarcely carinate ; coloration 



similar. 



Peter Botte Mt., Mauritius. 

 Unfigured. 



Section PACHYSTYLA, Morch, 1852. 



N. INVERSICOLOR, Fer. PL 6, figs. 89-92. 



Imperforate, acutely carinate, striate and spirally lineate ; 

 light chestnut-colored to dark chocolate, almost black, the 

 lighter colored specimens having a darker base, unicolored or 

 obscurely darker-banded at the suture and below the periphery, 

 or sometimes angularly and irregularly marked and clouded 

 with gray on the upper surface ; aperture from chestnut-color to 



dark purple. Diam. 39, alt. 22 mill. 



Mauritius. 



It is N. bicolor and N. Mauritiana of Lamarck, and N. Puero- 

 cunx, Peron ; the juvenile is N. plebeja, of the Berlin Museum, 

 teste Anton. 



N. MAURITIANA, Pfr. PL 6, figs. 93, 95. 



Imperforate, rather solid, finely striated, microscopical^ 

 decussated by close, slight spiral impressed lines ; yellowish 

 brown, often lighter colored below, columella white, interior of 

 aperture flesh-color. Diam. 22, alt. 17 mill. 



Mauritius. 



This is N. stylodon of Reeve, not Pfeiffer. The description is 

 from the adult, described by Pfr. as N. leucostyla (fig. 95), that 

 of the juvenile N. Mauritiana having priority; the latter is 

 snbperforate. 



