124 Journal New York Entomological Society. [Vol. xin. 



in which he puts some of Godman and Salvin's species of Bittleria, so 

 that I presume he intends his genus to replace Butleria as used by them. 



Synopsis of Species. 



1. Hind wings with spots below 2. 



Hind wings immaculate pirus. 



2. Many small spots on hind wings below microsticta. 



A few large spots on hind wings below polingii. 



D. pirus Edwards. 



Occurs in Colorada, Utah and New Mexico. 

 D. microsticta Godman & Salvin. 



Reported from our southern border. 

 D. polingii Barnes. 



Occurs in southern Arizona. 



SECTION B. 

 Key to the Genera. 



1. Antennae with the point of the club absent ; end obtuse 2. 



Antennse-with the point of the club present ; end sharp 6. 



2. Fore wings of male with a linear stigma 3. 



Wings without a stigma 5- 



3. Stigma nearly longitudinal Copseodes. 



Stigma oblique, normal 4. 



4. Fore wing with vein 2 nearer base than end of cell Adopaea. 



Fore wing with vein 2 at middle of cell Chasrephon. 



5. Fore wing with vein 12 short, the wing enlarged costally Ancyloxypha. 



Fore wing with vein 12 longer ; wing normally shaped Oarisma. 



6. Antenna 1 wi:h the point of the club short, less than width of club 7. 



Point of club long, equal to or greater than the width of the club 12. 



7. Antenna' short, equal to the width of the thorax Hylephila. 



Antenna longer, twice the width of the thorax S. 



S. Vein 3 of fore wings well before the end of the cell Polites. 



Vein 3 of fore wings near the end of the cell 9. 



9. Male stigma with modified scales below 10. 



Male stigma without modified scales below Ochlodes. 



10. Stigma apparently continuous II. 



Stigma divided by raised silky scales , Catia. 



11. A large black patch below stigma Atalopedes. 



A small black area below stigma Thymelicus. 



An obscure, weak fulvous area below stigma Erynnis. 



12. Mid tibiae with long distinct spines 13. 



Mid tibia not, or very feebly spined 24. 



13. Fore wings of male with a stigma 14. 



Fore wings without a stigma 20. 



