4 ARCTIADiE. 



B. Hind wing with vein 4 present. 



a. Hind wing with veins 6, 7 coincident, 



a}. Fore wing with veins 4, 5 stalked Cissura, p. 70. 



h^. Fore wing with veins 4, 5 from cell. 

 a?. Hind wing with vein 8 stalked with 7, rarely 

 obsolete. 



w^. Proboscis aborted, minute Euerythra, p.^254, 



63. Proboscis fully developed Melese, p. 72. 



b^. Hind wing with vein 8 from the cell Behtholdia, p. 78. 



h. Hind wing with veins 6, 7 not coincident. 

 a}. Fore wing with vein 11 stalked with 10. 

 a?. Fore wing with veins 10, 11 stalked from 



7, 8, 9 Syntarctia, p. 98. 



6^. Fore wing with veins 10, 11 stalked from cell. 



d^. Hind wing with vein 8 absent Caratiiis, p. 95. 



h^. Hind wing with vein 8 present, 

 a*. Fore wing with vein 6 from upper angle of 



cell or stalked with 7, 8, 9 Pachydota, p. 92. 



h^. Fore wing with vein 6 from below angle of 



cell Baritius, p. 99. 



c^. Fore wing with vein 10 from 11 anastomosing Z_7? ! 



with 7, 8, 9 to form the areole Tyria, p.^185. 



h^. Fore wing with vein 11 from the cell. 

 a-. Both wings with vein 6 from or from close to 

 angle of cell. 

 a^. Fore wing with veins 7 and 10 stalked ; 



8, 9 absent Arctagyrta, p. 173. 



*6^. Fore wing with veins 7, 8, 9, 10 stalked. 

 a^. Proboscis more or less aborted. 

 «\ Hind tibiae with the medial spurs absent. 

 a^. Fore tibiag with curved apical claw. 

 a? . Head with corneous process on vertex . Acantharctia, p. 321, 

 //. Head without corneous process on 

 vertex. 

 a^. Head and thorax clothed with rougli 

 hair. 



aP. Eyes small Ocnogyna, p. 225. 



b^. Eyes large Hyphantria, p. 335. 



b^. Head and thorax smoothly scaled Amsacta, p. 322. 



b'^. Fore tibiae without apical claw. 



a^. Eyes hairy Leptarctia, p. 220. 



b''. Eyes smooth, 

 a^. Head and thorax clothed with rough 



woolly hair M/ENAs, p. 247. 



b^. Head and thorax smoothly scaled. 

 aP. Fore wing narrow ; abdomen 



smoothly sealed at base Creatonotus, p. 331. 



b^. Fore wing broad; abdomen with 



some rough hair at base of dorsum . EcpantheriA, p.' 365. 

 6'. Hind tibiae with the medial spurs present. 



a^. Fore tibiae with curved apical claw Estigmene, p. 338. 



b^. Fore tibiae without apical claw. 

 a7 . Eyes hairy. 



a^. Eyes small Hyphoraia, p. 222. 



¥, Eyes large Ardices, p. 245. 



b'^. Eyes smooth. 

 a^. Thorax clothed with rough woolly hair. 

 a^. Eyes small. 

 a'°. Thorax and abdomen clothed with 



very long hair Laors p. 225. 



* In the male of Tricypha vein 10 is from the cell. 



