ANCESTR Y AND CLASSIFICA TION. 241 



crowded toward the front edge, at the middle of 

 which the costal vein terminated ; the subcostal 

 vein ran to the outer border just below the apex of 

 the wing and had four upper branches and one 

 lower branch, none of them forked, the last upper 

 branch striking the front edge just before the tip 

 of the wing ; the median had four equidistant 

 branches, the last branch uniting by a cross vein 

 a little beyond the middle of the wing with the 

 lowest subcostal branch ; the submedian ran to 

 the inner angle and the internal was soon lost in 

 the membrane. In the neuration of the hind wing 

 the subcostal and median veins with their branches 

 occupied the middle and larger part of the wing ; 

 each divided into three branches, all, excepting 

 perhaps the first branch of the subcostal vein, 

 originating beyond the middle of the open cell ; 

 the costal and subcostal veins were connate at the 

 base, suddenly diverging when they parted, the 

 former just reaching the costal margin, but not 

 extending beyond it ; the submedian and inter- 

 nal were simple and of nearly equal length. 



In coloring and pattern they might have been 

 divided into three general types : first, those 

 whose wings were uniformly dark brown, darker 

 above than below ; second, those of similar ap- 

 pearance, but more or less enlivened in the middle 

 with tawny above and yellow below, and having, 

 besides, minute spots bare of scales near the 



