1912] Pupal Wings of Hepialus Thule 241 
a 
branches arising from this trachea. The cross-veins are all 
without trachee as is the usual condition in generalized 
wings. The posterior branch arising at the first dichotomy of 
media in Hepialusis undoubtedly the homologue of the posterior 
branch at the first dichotomy of media of the hypothetical type. 
This branch in the hypothetical type divides dichotomously 
Fig. 1. Hepialus thule, pupal wings. 
