128 NANINA. 



N. PELLUOIDA, Gould. PI. 42, fig. 14. 



Perforate, thin, very lightly, minutely decussated, pellucid, 

 shining, light corneous ; whorls 5^, suture submargined, periph- ] 

 ery angnlated. Diam. 20'5, alt. 10 mill. W. Africa. 



Is perhaps a not fully grown state of the next species, but is i 

 more distinctly angulated than the incomplete stage of N. troglo- j 

 dytes before me; if identical, Gould's name has priority of ! 

 publication. 



N. TROGLODYTES, Morelet. PI. 42, figs. 18-20. 



Perforate, thin, shining, very lightly, minutely decussated ; 

 3'ellowish or brownisti 1 corneous; whorls 7, suture submargined, ] 

 periphery obtusely angulated, becoming rounded in front. 



Diam. 26, alt/13 mill. Guinea. I 



N. Africana, Pfr., is a synonym. According to Dr. von 

 Martens this species has also been observed at Bonjongo, Mozam- I 

 bique, but his figure differs, and Bourguignat has given it a new I 

 name. 



N. BUCHHOLZI, Bourg. PL 42, fig. 90. 



This is the N. troglodites of Dr. von Martens, not Morelet. 



Bonjongo, Mozambique. I 



N. NYASSANA, E. A. Smith. PI. 42, figs. 15-17. 



Perforate, thin, rather glossy, growth-lines rather prominent, 

 crossed by close concentric microscopic striae ; brownish corne- J 

 ous ; whorls 5j, the last-with a prominent keel. 



Diam. 25, alt. 13 mill. 



Between L. Nyassa and the East Coast of Africa. 1 



Perhaps should be united with Martensia (p. 50). 



N. BIGOTI, Crosse. PI. 42, fig. 10. 



Scarcely perforate, thin, shining, very obsoletely distantly 

 striate ; olive-fulvous; whorls 5, suture submargined, periphery 

 very obsoletely angulated. Diam. 23, alt. 11 mill. 



Ins. Mayotte.M 



N. LIBERIA, A. D. Brown (unfigured = ? a young troglodytes, 



Morel. CapePalmas. | 



N. CEREA, Gould (unfigured). Gape Palmas. 



N. GLOMUS, Albers (unfigured. Perhaps a Streptaxis). Liberia. 



