120 Journal New York Entomological Society. [Vol. xiii. 



Genus PHOLISORA Scudder. 

 P. catullus Fabricius. 

 P. mejicanus Reakirt. 



I am unable to distinguish these forms except by the locality. 

 Specimens from Arizona, New Mexico, southern California and Mexico 

 I have referred to the latter ; those from the rest of the United States 

 to the former. Godman and Salvin give genitalic differences, which 

 I have not looked for. 



Genus MELANTHUS Mabille. 

 M. brunnea Herrich-Schaeffer. 



Occurs on the Florida Keys. Mabille places Melanihus in the sec- 

 tion of the table that has the point of the antennal club obtuse, but 

 it appears to me to be sharp and I have placed it accordingly. Dr. 

 Skinner is responsible for the determination. 



Genus THANAOS Boisduval. 

 Synopsis of Species. 



1. Fore wings with rows of black-edged spots without hyaline centers 2. 



Fore wings with some of the spots white-hyaline centered 5. 



2. Male darkly blackish, the spots not contrasting somnus. 



Male less dark, the spots more relieved 3. 



3. Larger species brizo. 



Smaller species 4. 



4. Bands normal, the outer one well beyond the cell icelus. 



Rands abnormal, the outer one composed of clavate rays ausonius. 



5. Fringe of fore wings dark 6. 



Fringe of fore wings white 15. 



6. Smaller species, the white dots mostly punctiform 7. 



Larger species, some of the white dots of large size 13. 



7. Markings strongly contrasted martialis 



Markings not well contrasted 8. 



8. A discolorous brownish patch over end of cell naevius, terentius. 



This patch not distinct, or absent 9. 



9. Male very dark with marks nearly obscured 10. 



Male less dark with the markings more contrasted II. 



10. Wings brownish tinted, markings legible, though obscure persius. 



Wings densely black, the markings nearly completely lost per ngra. 



11. Fore wings hoary gray powdered afranius. 



Fore wings not gray powdered 12. 



12. Smaller species lucilius. 



Larger species. lilius. 



13. Fore wings hoary gray powdered propertius. 



Lore wings not gray powdered 14. 



