222 LKPrnOPrERA. 



in his Butterflies of the Eastern United States and 

 Canada, with Special Reference to New England, de- 

 scribes the curious, transparent, crescent-shaped bands 

 at the base of the antenn?e in the chrysalis, which 

 have facets hke the outer covering of the faceted eyes 

 of the adults, but have no corresponding internal 

 structures. This eminent entomologist points out 

 that such structures indicate the former presence in 

 the pupa of faceted eyes of which these cuticular 

 organs are the surviving remnants. This would lead 

 to the supposition that the pupal stage in the ances- 

 tors of these existing forms must have led an active 

 existence, and that. one of the results of the incoming 

 of the quiescent pupal habit made their eyes useless, 

 and they were lost except in so far as the crescent- 

 shaped bands are concerned. The archaic butterflies, 

 therefore, probably had direct metamorphosis like the 

 first series of orders. 



