44 NANINA. 



nut band below the carina ; whorls 6, the last with strongly angu- 

 lated peripher} 7 . Diam. 44, alt. 26 mill. 



Ins. Leyte and Samar, Philippines. 



A variety has the last whorl more inflated, and is darker 

 colored. Closely allied to the next species, but the shell is 

 thinner, spire more convex, carina obtuse, the umbilicus not 

 closed, etc. 



N. PANAYENSIS, Brod. PL 14, figs. 96, 97. 



Imperforate, moderately thick, body-whorl concave above the 

 carina, very minutely granularly decussated by close impressed 

 spiral lines and close growth-lines ; yellowish or orange-brown 

 or light-chestnut above, darker and olivaceous below, smooth and 

 shining; whorls 6, peripheral carina acute. 



Diam. 44, alt. 21 mill. 



Ins. Panay, Philippines. 



The darker colored variety, with somewhat higher spire, 

 occurs on the Island of Luzon. 



N. BLAINVILLEANA, Lea. PL 15, figs. 1, 2. 



Narrowly perforate, sometimes covered in the adult, moderately 

 thin, very finely decussately granular above, smooth and polished 

 below; olivaceous brown, dilutely darker banded below the 

 periphery; whorls 6, the last strongly angulated, base usually 

 darker colored. Diam. 36, alt. 20 mill. 



Ins. Labaan, Philippines. 



Generally known as N. xemigranosa, Sowerby, but Dr. Lea's 

 name has clear priority, and I am glad to have the opportunity 

 of restoring it. Dr. Lea was one of the pioneers in opening up 

 to science a knowledge of the manj' beautiful terrestrial and 

 fluviatile mollusks of the East Indies and Philippines, and he 

 did his work well, both by description and illustration, yet his 

 labors have been slightingly treated by European naturalists, 

 and often ignored. 



N. Moussoni, Semper, is a synonym. 



N. COMPLUVIATA, Cox. PL 14, fig. 100. 



Umbilicus narrow, shell thin, smoothish ; chestnut-color, lighter 

 on the carina and around the umbilicus ; whorls 6, the last with 



