212 THE CANADIAN KNTOMULUGLST. 



Middle and hind tibiie without a lateral spur ; hind wings with two 

 discal cells, the first much larger than the second. 



Hind wings with a lanceolate cell Ptilia, Lepel. 



( = Didy?nia, Lap.) 



Hind wings without a lanceolate cell Gymnia, Spinola. 



8. Hind wings with two discal cells, the first much smaller than the 



second, the anal cell present Trichor/iachus, Kirby. 



9. Second submarginal cell receiving two recurrent nervures, or the 



second recurrent is interstitial 11. 



Second and third submarginal cell each receiving a recurrent nervure ; 

 hind wings with two discal cells. 



Hind and middle tibiae with lateral spurs 10. 



Hind tibiae without lateral spurs. 



Third submarginal cell much shorter than the second ; hind 



wings without an anal cell He?nidianura, Kirby. 



Third submarginal cell as long as the second or nearly so ; 

 hind wings with an anal cell Athermantus, Kirby. 



10. Third submarginal cell shorter than the second ; hind wings with an 



anal cell Caloptilia, Ashm., n. g. 



(^Type C. Townsendi, Ashm.) 



1 1. Hind tibije with apical spurs 12. 



Hind tibite without apical spurs. 



Head large, quadrate, the temples full and very broad ; mandibles 

 acute at tip ; tarsal joints very short, joints 2-5 trans- 

 verse Pac/iylota, Westwood, 



12. Second submarginal cell receiving both recurrent nervures; middle 



and hind tibial without lateral spurs 13. 



Second submarginal cell receiving only one recurrent nervure, the 

 second recurrent interstitial. 



Middle and hind tibiae with a lateral spur; third submarginal 

 cell much larger than the first and much broader at apex than 



the second Acanthoptenos, Ashm., n. g. 



(A. IVeithii, Ashm.) 



13. First and third submarginal cells rather small, subequal, the second 



elongate, the third quadrate or nearly so. 



Claws simple Ptenos, Norton. 



Claws bifid , IVefnatoneura, Andre'. 



