lIELICIDiE, 45 



233. Nanina bifilaris, Semper. 



{EupJeda sp., fide Semper.) 

 3 Arayat; coll. Prof. C. Semper. 



Sub-Genus TROCHONANINA, Mss. (type N. mozamhicensis.) 

 [= MARTEN SI A, Semper, type N. mozamhicensis. '\ 



234. Nanina (Trochonanina) jenynsi, Pfeiffer. 



2 Zanzibar ; ex c. Dr. Ed. von Martens. 



Sub-Genus THAPSIA, Albers. (type N. troglodytes). 



235. Nanina (Thapsia) troglodytes, Moreiet. 



1 Coast of Guinea ; ex c. A. Moreiet, Esq. 



Sub-Genus ACUSTA, Albers. (type N. ravida). 

 Acusta is ranked of late as a Sub-Gemis of Helix and not 

 of Nanina, but I am unable to find any distinct statement that 

 the animal is without a mucous pore. 



236. Nanina (Acusta) ravida, Benson. 



3 China; ex c. G. Nevill, Esq. 



237. Nanina (Acusta ?) nora, h. A. Adams. 



2 Ichang Gorg<», China ; ex e. H. A. Adams, Esq. 



238. Nanina (Acusta) brevispira, h. a. Adams. 



1 Ichang Gorge; ex c, H. A. Adams, Esq. 



239. Nanina (Acusta) assimilis, H. A. Adams. 



1 Formosa ; ex c. H. A. Adams. 



Sub-Genus CALDWELLIA, H. A. Adams (type iV^. phily. 

 rina). 



240. Nanina (Caldwellia) imperfecta, Deshayes. 



6 Mauritius ; coll. G. Nevill, Esq. 

 4 Bourbon ; coll. G. Nevill, Esq. 



241. Nanina (Caldwellia) cernica, H. A. Adams. 



20 Vacoa, Mauritius (type) ; coll. G. Nevill, Esq. 



