104 NANINA. 



constitutes a new group described by Mr. C. F. Ancey under 

 tha name Armandia; whether they are members of the Zonitidse 

 or true helices remains uncertain. 



N. DISCUS, Mollendorff. PI. 35, figs. 13, 14. 



Narrowly perforate, thin, pellucid, shining ; very slightly 

 striulate and spirally lineate ; light fulvous ; whorls 5^, suture 

 obsoletely crenulated. Diam. 4-25, alt. 2-33 mill. 



Hongkong. 

 N. EASTLAKEANA, Mollendorff. PL 35, figs. 15, 16. 



Very narrowly perforate, irregularly arcuately striate above, 

 smoother and shining below, thin, pellucid, yellowish corneous; 

 whorls 6, periphery sharply angulated. 



Diam. 15*5, alt. 8 mill. 



Province of Fudshien, China. 



I place this species here in deference to the indications of its 

 author ; to me, the figure appears to ally it to Trochonanina. 



N. KATHOUISII, Heude. PI. 35, figs. 17, 18. 



Scarcely perforate, striated above, less distinctly so below, 

 diaphanous; whorls 7, suture profound, last whorl with a 

 peripheral thread-like carina. Diam. 6, alt. 3'5 mill. 



Yang-tcheou fou, China. 



This, like the preceding species, recalls Trochonanina. 



N. SUPERLITA, Morelet (unfigured). Whampoa and Canton. 



N. NITIDISSIMA, Mollendorff (unfigured). 7ns. Hainan. 



N. JAPONICA, Mollendorff (unfigured). Japan. 



*** Species of Philippines, Australia, etc. 

 N. HENRICT, Semper. PI. 35, figs. 19-21. 



Imperforate, very slightly, minutely, spirally striate, thin, 

 diaphanous ; orange-brown ; whorls 5, periphery obtusely angu- 

 lated. Diam. 19'5, alt. 11 mill. 



Ins. Luzon. 

 N. CREBRISTRIATA, Semper. PI. 35, figs. 22-24. 



Very narrowly perforate, striulate, light yellowish brown, 

 becoming lighter below; whorls 5J, suture submargined. 



Diam. 22, alt. 11 mill. 



Is. of Basilan and Mindanao. 



