4 AMERICAN LEPIDOPTERA. 



23. Veiu 7 of primaries wiven off beyond vein 10 24/ 



Vein 7 given off before 10 (further from the apex of wing) 26. 



24. Apex of primai'ies slightly acute Fentonia. 



Apex more distinctly rounded Harpyia. 



25. Tongue present IVIetaschalis. 



Tongue absent Thanmetopcea. 



26. Secondaries with veins 7 and 8 (ii-iii) bent upward toward the costa. 



L<iparopsJs. 

 Secondaries with veins 7 and 8 not so bent 27. 



27. Male antennse pectinated on the basal two-thirds or ciliate • . -Stauropiis. 

 Male anteunje pectinated to the tip Glupliisia. 



28. Vein 10 of primaries arising from the top of the accessory cell 29. 



Vein 10 arising beyond the end of the accessory cell 35. 



29. Primaries with vein 6 (Vi) from the angle of the cell Zaiia. 



Primaries with veiu 6 stalked 30. 



.30. Accessory cell long, vein 6 arising before the end of it 31. 



Accessory cell short, vein 6 from its tip Cerura. 



31. Antennte fasciculate or ciliate 32. 



Antennte of % pectinate for the basal two-thirds 33. 



Antennae of % broadly pectinated to the tip Hyparpax. 



32. Primaries acute at apex Aiiticyra. 



Primaries rounded at apex C^hadisra. 



33. Head without a distinct vertical tuft ; anal tuft simple in % 34. 



Head with a slight vertical tuft ; anal tuft of % furcate Schizura. 



Head with a distinct vertical tuft ; palpi long Dasylopltia. 



34. Accessory cell moderately long Kiihyparpax. 



Accessory cell reaching half way to apex of wing Heterocaiiipa. 



35. Vein 6 of primaries arising beyond the angle of the cell 36. 



Vein 6 arising from the angle of the cell 41. 



36. Primaries with vein 5 from near the upper angle of the cell 37. 



Primaries with vein 5 from the middle of the cross-vein 38. 



37. Antennse pectinated in both sexes; wiiigs white Aiidria. 



Antennae of ^ shortly pectinated ; of 9 simple Syninieriisita. 



38. Palpi short and porrect 39. 



Palpi upturned, reaching the vertex of the head ... 40. 



39. Antennae of the % pectinate-fasciculate Ailtlieiia. 



Antennae fasciculate only Dataiia. 



40. Thorax not crested Soiiiera. 



Thorax crested anteriorly Neriee. 



41. Primaries with a short accessory cell, vein 7 from the end of it- . -Nadaja. 

 Accessory cell long, vein 7 from before the end of it; thorax not crested. 



Cleapa. 



42. Apex of primaries rounded 43 



Apex of primaries acute and produced Hapigia. 



43. Primaries broad, excised before the apex Pygtera, 



Primaries narrow, the margins even illelaloplia. 



Primaries long and narrow Euiiystalea. 



44. Secondaries with veins 3 and 4 from the cell 45 



Secondaries with veins 3 and 4 stalked Megaceramis. 



