GENUS PYRRHOPYGA 255 



Genus PYRRHOPYGA. 



481. Pyrrhopyga Araxes. 



Plate XXXII; Figure 481, Female, Southern Arizona, 

 1903 ; Stephens. 

 This Araxes was taken in the Santa Rita Mountains near 

 Tucson, in July, I believe, at an estimated altitude of 5,000 feet. 

 It is another Mexican species, and comes not west of the moun- 

 tains where this one was taken. 



Genus MEGATHYMUS. 



483. Megathymus Neumcegeni. 



Plate XXXII ; Figure 483, Female, Southern California, 



July, 1903; Stephens. 



This Megathymus is not previously noted as coming from any 



locality but Arizona, but it has been taken for several seasons 



along the border of the Colorado Desert in California, where the 



larvae feed upon the pith inside the stems of Yucca Deserti. 



The eggs of Megathymus and of Pyrrhopyga are pitted or 

 indented like a thimble. 



