48 Mr. Butler's Feviftio'n of Genera of 



GENUS 27. IXIAS. Hiihner. 



Type /. Pyrcne. Cramer. 



Frontwings siil)trianpiilar ; neiiration almost as in 

 Tcracol'us hut first discoidal nervure emitted l:teyond end of 

 cell ; upper disco-cellular half the lengtli of lower, hoth 

 strongly arched : also in all species except T. yEnijype, G\\, 

 and Moriamne, the second subcostal is nearer to the end 

 of cell and the upper discoidal branches from the sub- 

 costal. 



Hindwings rounded; upper disco-cellular one third or one 

 fourtli the length of lower, which is strongly angulated. 

 both oblique. 



Body covered with very short hair ; palpi moderately 

 long, rather hairy ; antennae slender with slightly com- 

 pressed club. 



GENUS 28. HEBOMOIA. Hilbncr. 



Type H. Glauci'p'pc. Linnseus. 



Frontwings elongated; first and second subcostals 

 emitted near together before end of cell ; third and fourth 

 sul)costals forming a short fork before apex ; first dis- 

 coidal nervure springing from upper disco-cellular ; upper 

 disco-cellular rather shorter than lower, angulated and 

 arclied ; lower disco-cellular strongly arched. 



Hindwings. Upper disco-cellular about half tiie length 

 of lower and slightly arched, lower disco-cellular waved, the 

 two together forming an irregular oblique line : a thickened 

 longitudinal central streak from base to outer margin as in 

 Ftiicliopteryx. 



Body robust, clothed with long straggling hairs ; palpi 

 short, la'istly; antemiic moderately long, the club ill- 

 defined, merely a thickening of the shank. 



GENUS 29. HELIOCHKOMA. Bullrr. 



Type H. Idiotica. Butler. 



Frontwings subtriangular ; first subcostal emitted at 

 some distance before end of cell, second at a great distance 

 beyond and near to third and iburth which form a short 

 fork to apex ; first discoidal nervure springing from up])er 

 disco-cellular which is about two thirds the length of lower 

 and obli(pie ; lower disco-cellular oblique, slightly arched. 



Hindwings. Upper disco-celhdar rather more tlian half 

 the length of lower, the two togetlier foi'ming a slightly 



