234 THE CANA.mAN ENTOMOLOGIST. 



Primaries broader, trigonate, apices marked ; secondaries 



proportionate Callirnorpha 



10. Tongue weak and short ii 



Tongue moderate or long 12 



11. Fore tibia with a small spine at tip, wings broad and \dt.rgt..Euprepia 

 Fore tibia unarmed. 



Wings broad, size large Platarctia 



Wings moderate, size smaller \ ^ ., . 



12. Primaries broad, apices not produced, secondaries propor- 



tionate •. Ejuhcetes 



Primaries broad, apices produced, acute, secondaries 



small Eupseiidosoma 



Primaries narrow, with greatly produced apices, sec- ( Halisidota 



ondaries still smaller j Euhalisidota 



Primaries still narrower, size smaller Nelphe 



13. Vein 8 of secondaries wanting Euerythra 



Vein 8 of secondaries present 14 



14. Median spurs of hind tibia wanting 15 



Median spurs of hind tibia present 18 



15. Anterior tibia armed at tip 16 



Anterior tibia unarmed at tip .17 



16. Tibial armature consisting of a long claw \ F t i) 



Tibial armature consisting of a stout spine each side of 



tip ; $ antennae pectinated Eeucarctia 



Tibial armature consisting of a small spine at each side 



of tip ; % antennae simple Hyphaiitria 



17. Primaries broad and obtuse, secondaries proportionate. . . .Leptarcti<^ 

 Primaries long, apices acutely produced ; secondaries 



small, caudate Ecpantheria 



18. Antennae of ^ pectinated 19 



Antennae simple in both sexes 20 



19. White species with more produced apices SpUosoma 



Tawny species with broader, more obtuse wings A7itarctia 



20. Primaries narrow, elongate, apices acute ; secondaries 



rounded ; vestiture dense ; color tawny Pyrrharctia 



