( 552 ) 



allied genns Maasscnia there is often a small dot present behind W. The fonr dots 

 are all marked in X. dcnsoi (PI. liXV. f. 4). 



The distal marginal area of the forewing is generally limited by a cnrved line 

 running from apex to hinder angle ; this line, which we call postdisco-snbmarginal, 

 is composed of a snbmarginal line and a postdiscal one joining each other : the free 

 costal portion of the postdiscal line is often vestigial. 



Key to the species : 



a. Forewing, above, with a white snbmarginal 

 line forming a right angle with an 

 oblique white line crossing wing from 

 middle of costal margin to hinder angle . 



Forewing with a black band from middle 

 of costal margin to hinder angle ; 

 abdomen withont black side-patches 



Abdomen with black side-patches 

 h. Forewing with a white cnrved discal and 

 a white antemedian baud, converging 

 posteriorly ; stigma large, triangular 



Forewing with a straight discal band which 

 is at right angles to hinder margin 



Forewing withont that band 

 r. The band edged with white proximally, 

 4 mm. from lower angle of cell 



The band edged with white j)roximally, 

 at least 6 mm. from lower angle of cell . 



The band not edged with white proximally ; 

 stigma consisting of several dots . 

 (I. A large triangular brown discal area on 

 forewing, inner edge obliqne, outer edge 

 sharply marked, quite straight from R- to 

 hinder margin of wing, stigma V-shaped 



A blackish band across wing from middle 

 of costa to distal margin before angle, 

 space between this band and distal 

 margin blackish, excepting patches in 

 costal area, contrasting sharply with 

 middle area of wing ; no stigma 



Forewing not so ; with or without stigma . 

 e. Postdisco-snbmarginal line straight from 

 R' backwards, sharply marked 



Postdisco-snbmarginal line obviously den- 

 tate; irregular, often very feebly marked 



Forewing with sharply defined clayish patch 

 in middle of hinder margin . 

 /. Comb of short terminal spur of hindtibia 

 vestigial ; Oriental species 



Comb of short terminal .spur of hindtibia 

 well developed ; African species 



487. N. rectangulata. 



488. N. aequivalens. 

 . b. 



483. N. argentifera. 



c. 

 . d. 



486. iV. rosae. 



48.5. N. oenopion. 



484. X. (lenHoi. 



470. X ran. 



479. N. hipartita. 



