b". Hind wiug with vein 8 present, 

 a". Palpi with the 2nd joint reaching 

 vertex of head. 

 a^°. Palpi with the 3rd joint upturned . Pelochyta, p. 103. 

 6^°. Palpi with the 3rd joint porrect ... Opiiarus, p. 117. 

 6". Palpi with the 2nd joint not reaching 

 vertex of head, 

 a^o. Palpi with the 3rd joint upturned, 

 a^i. Hind wing with veins 4,5 stalked. IlYrERTHiEMA, p. 88. 

 b^^. Hind wing with veins 4, .5 from 



cell Tessellarctia, p. 90. 



h^°. Palpi with the 3rd joint porrect ... Hemihyalea, p. 129. 

 b''. Fore wiug with vein 3 from well before 



angle of cell. 

 «'*. Palpi with the 2nd joint reaching 



vertex of head Elysius, p. 105. 



i*^. Palpi with the 2nd joint not reaching 

 vertex of head. 

 a^. Palpi with the 3rd joint upturned. 



a^". Hind wing with veins 6, 7 stalked . Brycea, p. 187. 

 ^b^°. Hind wing with veins 6, 7 from cell. Halisidota, p. 145. 



b^. Palpi with the ord joint porrect Amastus, p. 134. 



6*. Abdomen smoothly scaled at base Protomolis, p. 182. 



b*. Palpi porrect. 



a*. Hind wing with, veins 6, 7 stalked Cyanarctia, p. 206. 



b^. Hind wing with veins 6, 7 from cell. 

 a^. Hind wing with veins 3, 4 stalked to 



near termen, 5 from cell Ciiloriioda, p. 421. 



b'^. Hind wing with veins 4, 5 stalked, 3 

 from cell. 

 a''. Fore AN-ing with vein 6 from upper angle 

 of cell ; hind wing with vein 8 obso- 

 lescent Emilia, p. 182. 



h~. Fore wing with vein 6 from well below 

 angle of cell ; hind wing with vein 8 



fully developed Stenarctia, p. 417. 



c'^. Hind wing witli veins 3, 4, 5 from cell. 

 a'. Hind tibiae with the medial spurs absent. 

 a'*. Fore tibiae with curved apical claw. 

 a^. Head and thorax clothed with rough 



hair Seirarctia, p. 422. 



6®. Head and thorax smoothly scaled ... DiONYCiiorus, p. 424. 



6*. Fore tibi;\i without apical claw Turui'TIana, p. 425. 



b''. Hind tiljite with the medial spui's 

 present. 

 a*. Fove tibia; with curved apical claw ... Pyoauctia, p. 415. 

 b^. Fore tibiii; without apical claw. 

 a^. Fore wing with vein 3 from near angle 



of cell. 

 a}°. Fore wing narrow. 

 a^-. Head and thorax clothed with 



woolly hair Codiosoma, p. 413. 



6^'. Head and thorax smoothly sealed. STENOPiiiEA, p. 215. 

 b^°. Fore wing broad. 

 a^^. Proboscis aborted, minute. 

 a^^. Abdomen dorsally clothed with 



rough hair Apantesis, p. 395. 



/)'-. Abdomen smoothly scaled Eucii^tes, p. 417. 



Except in H. sthcnia. 



