NANINA. 117 



1ST. SUBTILISSIMA, Gould. PI. 39, figs. 92-94. 



Imperforate, very fragile, polished ; whorls 5, periphery 



very acutely carinated. Diam. 3, alt. 1*5 mill. 



Sandwich Is. 



N. ANGUSTIVOLUTA, Garrett. PL 39, figs. 83-85. 



Imperforate, thin, smooth, shining ; pale amber-colored, with 

 or without small, irregular opaque white spots; whorls 5J-6, 

 suture narrowly margined, periphery subangulated. 



Diam. 4'5, alt. 2'5 mill. 



Moorea, Society Islands. 



N. CLAUSA, Heude. PL 39, figs. 86-88. 



Imperforate, rather solid, minutely striated; whitish ; whorls 

 7, periphery angulated. Diam. 7'5, alt. 4 mill. 



Houang-tcheou fou, China. 



B. Perforate, 

 a. Periphery not carinated. 



N. GEMMA, Pfeiffer. PL 39, figs. 95-97, 



Subperforate, thin, smooth, shining, pellucid ; greenish hya- 

 line ; whorls 4, suture submargined. Diam. 9, alt. 5 mill. 



Ins. Luzon and Camiguing, Philippines. 

 It is N. suturalis. Beck. 



N. TEBSA, Issel. PL 39, figs. 1-3. 



Very minutely perforate, very glossy ; light yellowish ; whorls 



5J. Diam. 7, alt. 6 mill. 



Borneo. 



N. PERLUCIDA, Issel. PL 39, figs. 8-10. 



Very minutely perforated, very fragile, pellucid, lightly 

 obliquely striulate ; yellowish corneous ; whorls 5. 



Diam. 2-3, alt. 2 mill. 



Sarawak, Borneo. 



N. MACDOUGALLI, Issel. PL 39, figs. 11-13. 



Subcovered perforate, very fragile, translucent, a little shining, 

 obliquely striulate ; yellowish corneous ; whorls 4J, periphery 

 sometimes obscurely subangulated. Diam. 2, alt. 1*5 mill. 



Sarawak, Borneo. 



