ACEONYCTA. 99 



a^. Fore wing with the orbicular well- 

 deieliipecl. 

 a\ Fore wing witli the orbicular round ... auricoma. 

 h~. Fore wing with the orbicular quadrate, 



whitish pidverosa. 



h^. Fore wing with the orbicular minute. 

 a?. Fore wing with the antemedial line 



double, distinct menyanthidis. 



f. Fore wing with the antemedial line 

 single, obsolescent. 

 a!^. Fore wing with the basal streak 

 reaching antemedial line. 



«". Fore wmg blue-grey canadensis. 



b^. Fore wing grey-white, 

 a'". Fore wing thickly irrorated with 



I'uscous Cinderella. 



h^°. Fore wing sparsely irrorated with 

 fuscous. 

 «ii. Fore wing creamy-white, the 

 postmedial line incurved in sub- 

 median fold '. le2msoulina. 



611. Fore wing chalky white, the 

 postmedial line angled inwards 



in subinedian fold chionochroa. 



b^. Fore wing with the basal streak not 

 reaching antemedial line, 

 a". Fore wing white irrorated with 



fuscous populi. 



h^. Fore wing brown irrorated with 



white similana. 



b". Fore wing without black sti-eak in sub- 

 median fold crossing postmedial line. 

 a^. Fore wing with tne postmedial line 

 sti'ongly dentate. 

 a''. Hind wing with the ground-colour 



whitish gastridia . 



W. Hind wing with the ground-colour 



orange metaxantha. 



b^. Fore wing with the postmedial line 

 minutely dentate. 

 a'^. Fore wing blue-grey ; hind wing white 

 in male. 

 a^. Fore wing with prominent white 

 lunule on postmedial line in sub- 

 median fold iiigfi'tcans. 



b^. Fore wing without prominent white 

 lunule on postmedial line in sub- 

 median fold emacidata. 



W . Fore wing pale grey ; hind wing tinged 

 with brownish ochreous. 

 «*. Fore wing with fuscous shade on 



inner area impressa. 



b^. Fore wing without fuscous shade on 



inner area distans. 



Fore wing with series of dark streaks in inter- 

 spaces of terminal area. 

 t^. Fore wing with the postmedial line with 

 strong whitish teeth interrupted by dark 

 streaks at discdl and submedian folds edola.ta. 



h2 



