18 KEY TO THE FAMILIES. 



i*. Hind wing with vein 8 cou 

 nectecl with the cell by a bar 



near base 25. Endromidse. 



6*. Hiud wing with vein 8 curved and 



approximated to or anastomosing 



with 7, or connected with it by a 



bar. 



a'. Hind wing with a precostal spur 



to vein 8 42. Callid\llid8e. 



6'. Hind wing with no precostal spur 

 to vein 8. 

 a^. Hind wing with vein 1 a 



absent, or not reaching tornus. 43. Drepanidse. 

 b^. Hind wing with vein 1 a 

 reaching tcn-nus. 



a7. Frenulum present 44. Thyrididae. 



b''. Frenulum absent 24. Lasiocampidae. 



b^. Fore wing with vein 5 from middle of 

 discocellulars, or nearer 6 than 4. 



a^. Antennae clubbed 40. Euschemonidae. 



b^. AntenniE witli the shaft filiform or 

 fusiform. 

 a*. Hind wing with vein 8 diverging 

 from the cell from base. 

 a'. Fore wing with vein 7 connected 

 with 8, 9. 

 a^. Proboscis absent ; tibia with- 

 out spurs 13. Satumiadse. 



b^. Proboscis present ; tibia; with 



spurs U). Ceratccampidae. 



6'. Fore wing with vein 7 remote 



from 8, 9, usually stalked with 6. 17. Uraniadae. 

 b*. Hind wing with vein 8 connected 

 with or appro.ximated to the cell 

 or vein 7. 

 a\ Hind wing with vein 8 remote 

 from 7. 

 a®. Proboscis absent. 



a''. Frenulum absent 14. Bombycidae. 



b~. Frenulum present 10. Eupterotidae. 



b^. Proboscis present. 



a'. Hind wing with vein 8 con- 

 nected with tlie cell near 



middle; vein 5 obsolescent . 11. Notodontidae. 

 b''. Hind wing with vein 8 con- 

 nected with the cell near 

 base only, or vein 5 fully 



developed 12. Geometridae. 



i'. Hind wing with vein 8 approx- 

 imated to or anastomosing 

 with 7. 



a®. Frenulum absent 15. Brahmaeidae. 



A*. Frenulum present. 



a'. Hind wing with vein 8 con- 

 nected with the cell by a bar 



near base 8. Sphingidae. 



b'. Hind wing with vein 8 not 



connected with the cell 9. Cymatophorid ae. 



