EAST INDIAN NESOPUP^E. 337 



Key to Vertiginince of the East Indies. 



t 1 . Angular and parietal lamellae diverging forward, the for- 

 mer connecting with the outer lip. 



& 1 . Angular lamella small and low; 5 or 6 teeth. 



N. malayana, 110. 39. 



fe 2 . Angular lamella strongly developed; 5 to 10 teeth. 

 c 1 . Shell cylindric-oblong, palatals readily visible. 

 d 1 . Irregularly striate with largely cutic- 

 ular riblets at intervals, often fuga- 

 cious; frequently minutely pitted. 

 e 1 . Without interpalatal folds. 

 /'. Length 1.8 to 2.15 mm. 



N. moreleti, no. 36. 

 f~. Length 1.5 mm. 



N. moellendorffiana, no. 37. 

 e 2 . With 1 or 2 interpalatal folds, 7 

 to 10 teeth in all ; Guam. 



N. quadrasi, no. 32. 



d 2 . Having fine, close rib-striae without 

 cuticular edges; length 1.4 to 1.6 mm.; 

 Philippine Islands. N. nunnodes, no. 38. 

 c 2 . Shell globose-ovate ; palatals, except the upper, 

 deeply immersed ; 1.36 x 1.12 to 1.45 x 1.1 mm. 



N. molucccwa, no. 35. 



Angular lamella short, remote from the upper termina- 

 tion of the outer lip. 



6 1 . Diam. less than half the length; 2.25x0.9 mm.; 

 Christmas Island. N. proscripta, no. 41. 



Z> 2 . Diam. more than half the length; 2 x 1.2 mm. 



N. selebeiisis, no, 40. 



No angular lamella ; parietal and columellar lamellae pres- 

 ent (Costigo). 



b\ One or two palatal folds; striate, with spaced hair- 

 like riblets ; Moluccas. Costigo sapwruana, p. 366. 

 b 2 . No palatal folds ; no cuticular riblets ; Busuanga. 



Costigo catomanica, p. 367. 





