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. Diain. 12 mill. 



Hob. unknown. 

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



Umbilicus narrow, subplicate above, smoother below, minutely 

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



Sonamarg, Kashmir. 

 N. IMPLIOATA, Nevill. 



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

 depressed and concave, the last scarcely carinate ; coloration 

 similar. 



Peter Botte Mt., Mauritius. 



Unfigured. 



Section PACHYSTYLA, Morch, 1852. 

 N. INVERSICOLOR, Fer. PI. 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- 

 cunae, 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, microscopically 

 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 

 subperforate. 



