NANTNA. 121 



N. VITRININA, Liardet. PL 40, figs. 41, 42. 



Perforate, thin, translucent; yellowish corneous; whorls 4J, 

 the last subangulated and obscurely brown banded on the 

 periphery, suture margined. Diam. 9 mill. 



7ns. Taviuni, Viti Is. 



Animal black, the mantle covering two-thirds of the shell 

 which it cannot enter at first. 



N. RAMSAYI, Liardet. PI. 40, fig. 52. 



Shell like the preceding species. 



Animal red ; a protuberance on the back rests against the 

 shell. Like the preceding species it cannot at first recede into 

 its shell ; its mucus is of a brick red color. The creature walks 

 by a series of loop or arch-like progressions. 



N. RAMBURTANA, Mabille and Le Mesle. PI. 40, figs. 76, 77. 



Perforate, smoothish ; thin, a little shining and numerously 

 arcuately striate above, polished, and obsoletely striate below ; 

 corneous; .whorls 6-7, the last angulate. Diam. 10, alt. 5 mill. 



Cambodia. 

 N. MYOPS, Dohrn and Semper. PL 40, figs. 53, 54. 



Very narrowly perforated, thin, pellucid, shining; grayish 

 corneous; whorls 4|, suture submargined, periphery obsoletely 

 angulated. Diam. 6, alt. 4 mill. Ins. Mindanao, Philippines. 



N. SONAMARGENSIS, Nevill. PL 40, figs. 68-70. 



Narrowly perforate, thin, closely ribbed above, obsoletely so 

 below; horny brown; whorls 7, narrow periphery obtusely 

 angulated. Diam. 11'5, alt. axis 4'5 mill. 



Sonamarg, Kashmir. 



N. STENOMPHALA, Mollcndorff. PL 40, figs. 71, 72. 



Narrowly perforate, thin, pellucid, lightly striulate, and with 

 slightly stronger decussating spiral lines ; yellowish corneous ; 

 periphery very obtusely angulated. Diam. 3'25, alt. 2 25 mill. 



Ins. Hongkong. 

 N. MINENSIS. Mollendorff. PL 40, fig. 58. 



Narrowly perforate, lightly striulate, shining, pellucid ; light 

 fulvous ; whorls 5, periphery obtusely subangulated. 



Diam. 3'5, alt. 2'5 mill. Prov. Fudshien, China. 



Is N. glaberrima, Moll, not Semper. 



