KOCTUID^. 



b*. Eyes not. overluiiig by cilia. 

 a^. Thorax clothed with hair aud hair-like 



scales and with spreading crests Manobia, p. 276. 



b^. Thorax clothed with hair only and without 



crests Thysetica, p. 444. 



!**. Fore tarsus with short thick claws on ] st three 

 joints ; frons with rounded prominence with 

 curved corneous plate below it from middle 

 of frons and a plate below frons produced to 



lateral wings Omychestra, p. 223. 



r^ Fore tarsus without claw-like spines on outer 



side of Ist joint. , 



a^. Eyes overhung by long cilia. 



a^. Proboscis aborted, minute Triciiopolia, p. 3(il. 



b'^. Proboscis fully developed, 

 w*. Tegulie dorsally produced into a ridge. 



«\ Abdomen with dorsal series of crests Pomodestra, p. 359. 



6\ Abdomen with dorsal crest on 1st segment 

 only. 

 «". Palpi fringed with long hair in front ... Stretchia, p. 363. 

 ¥'. Palpi f ringed with short hair in front ... HvnKOiCioDES, p. 253. 

 b^. Tegulffi not produced into a ridge, 

 rt'. Abdomen with dorsal series of crests. 

 a". Thorax clothed chiefly with scales. 

 a^. Thorax with ridge-shaped dorsal crest. Tuyrestra, p. 6. 



b'' . Thorax with spreading crests Tricuestra, p. 8. 



b^. Thorax clothed with hair and hair-like 



scales Lasionycta, p. 53. 



c". Thorax clothed with hair only Lasiestra, p. 47. 



¥. Abdomen with dorsal crest on 1st segment 



only ScRiPTANiA, p. 404. 



c\ Abdomen without dorsal crests Strigania, p. 466. 



1r. Eyes not overhung by long cilia, 

 a'. Proboscis aborted, minute, 

 a*. Abdomen witli dorsal crest on 1st segment, 

 a'. Frons with disk-shaped prominence with 



central truncate prominence Aspidifrontia, p. 450. 



i\ Fruns with rounded prominence with 



corneous plate below it Odontei-ia, p. 219. 



c'. Frons without prominence. 

 a'^. Pro- and metatliorax with spreading 



crests TiioLERA, p. 216. 



b*^. Pro- and metathorax without crests Britiiys, p. 447. 



//. Abdomen without dorsal crest. 

 a\ Frons \\\\\\ disk-shaped prominence with 



central truncate process Metopiora, p. 452. 



i''. Frons with prominence with lateral walls 



and roughened or convoluted centre Diaphone, p, 453. 



c''. Frons with rounded roughened promi- 

 nence with corneous plate below it. 

 «". Head and thorax clothed chiefly with 



scales PoEYTELonE.s, p. 454. 



//. Head and thorax clothed with hair 



only PoLYTEi/A, p. 456. 



d''. Frons without prominence Xanthopasti.s, p. 458. 



b^. Proboscis fully developed. 

 «'. Frons with truncate conical prominence. 

 a'. Abdomen with dorsal series of crests. 

 «". Frons with semilunar corneous promi- 

 nence Discestra, p. 14. 



J", Frons with circular prominence Craterestua, p. 17. 



