210 THE CANADIAN ENTOMOLOGIST. 



The following table is based on the work of Prof. J. B. Smith, which 

 appeared in Can. Ent. some years ago, and was worked over in the re- 

 vision of Bombyces by Mr. Neumcegen and myself. Following the table 

 is a list of genera and species ; italicized names are North American. 

 Bibliographical references are omitted, and they can readily be found in 

 Kirby's catalogue if wanted. The types of genera are recognized as deter- 

 mined by Kirby. 



Key to the Genera. 



1. Head prominent, tongue moderate or strong 2. 



Head more or less retracted, tongue weak or small 13. 



2. Secondaries large and ample, habitus lithosiiform 3. 



Secondaries trigonate, often small, primaries pointed at apex . . . .44. 



3. Vein 5 of secondaries faint or absent 4, 



Vein 5 distinct 5. 



4. Primaries long and narrow Coscinia. 



Primaries broad, trigonate Eubaphe. 



5. Primaries broad, trigonate : 6. 



Primaries narrow, apices rounded Utetheisa. 



6. Vein 5 of secondaries arising close to vein 4 7. 



Vein 5 of secondaries from near the middle of the cell Doa. 



7. No accessory cell ; veins 7 to 10 of primaries stalked 10. 



No accessory cell ; vein 10 free, from the discal cell Axiopcena. 



Accessory cell present, vein 10 arising from it 8. 



8. Anal angle of secondaries rounded in the male, spurs of tibise long.. 9. 

 Anal angle produced to a point ; spurs very short Argina. 



9. Vein 6 arising beyond the angle of the discal cell Macrobrochis. 



Vein 6 arising from the discal cell Callimorpha. 



ID. Vein 1 1 free from vein 10 11. 



Vein 1 1 almost or quite touching vein 10 12. 



11. Secondaries over three-fourths the length of primaries Haploa. 



Secondaries less than three-fourths the length of primaries .... Areas. 



12. Secondaries with veins 6 and 7 from the cell Sebastia. 



Secondaries with veins 6 and 7 stalked Calpenia. 



13. Vein 8 of secondaries wanting Euerythra. 



Vein 8 present 14. 



14. Veins 7 to 10 of primaries stalked from apex of cell 15. 



Vein 10 arising from the discal cell 38. 



1 5. Vein 1 1 free 16. 



Vein II joined to vein 10 to form an accessory cell Hipocrita, 



