660 



WILLIAM T. M. FORBES 



in the male. Scape densely sealed; but shaft in the North American 

 forms with a few scattered and fugitive scales (Automeris) or none. 



FIGS. 419-424. SATL-RXIOIDEA 



419, Citheronia regalis, venation: 420. Eacles imperial is, venation of costal part 

 of fore wing; 421, Adelocephafa bicol&r, venation of costal part of fore wing; 

 422, Anisota virginien#is, venation (The dotted outline indicates the wing form of 

 A. rubicunda, magnified to approximately the same proportions.) ; 423, Citheronia 

 regalis, seta map, showing spines only, 424, Anisota rubicunda, seta map, showing 

 spines only. 



Legs stout, the s^>urs inconspicuous or absent. Abdomen usually rela- 

 tively short, but exceeding the hind wings in the more primitive 

 species. Fore wings densely scaled, with heavy veins; one radial at 

 least lost (possibly "B, 5 if the family is related to the Epiplemidae) ; Mo 

 more or less definitely associated with R-stem ; the cell weakly closed 

 or open below it. Bases of R and Cu closely approximate, often 

 for a considerable distance ; 1st A lost, 2d A normal. Hind wing 

 without any trace of frenulum, with a broadly expanded humeral 



