Vol. xxi] ENTOMOLOGICAL NEWS 443 



lay along the dark colored twigs or ate the bur oak catkins. 

 It is a little strange that these branches would convert untamed, 

 restless "crawlers" into docile, lazy "worms," but so it seemed 

 for in 1909 the whole brood died of over exertion and failure 

 to take proffered nourishment. 



The eggs of Catocala unijuga, secured by the junior author, 

 hatched on the 8th and 9th of April. These larvae did well 

 from the beginning, feeding on willow and differed in no wise 

 from the brood fed by the senior author in 1907 and described 

 in a paper that year. 



From the ilia larvae, seventeen reached maturity and spun 

 pupal cases but only fourteen imagoes emerged, eleven males 

 and three crippled females, all of uniform color, rather dark, 

 and of the normal form. The female that laid the thirty eggs 

 producing this brood, was a plain ilia. That there was no 

 variation in these bred moths was a source of some disap- 

 pointment but, after all, it strengthened the belief that when 

 individuals of a variety are common they are the offspring 

 of varietal parents. 



The first moths, three in number, from the brood in doors, 

 emerged on the I3th of June and the last one on the I7th, 

 while the first seen in the woods was on the i6th of the same 

 month. From this fact, it would seem that the ilia larvae in 

 the woods passed through the freezing weather of the first 

 two weeks of April. 



Of the fourteen bred imagoes, three were so badly crippled 

 as to be worthless, a lone female with a very small hind wing 

 having been kept as an oddity. 



About fifty per cent, of the eggs yielded chrysalids, thirty 

 three and a third per cent, of the eggs gave fine cabinet speci- 

 mens. On June 23d the senior author took in the woods a 

 specimen each of Catocala ilia and innubens, the latter ragged. 



A number of ilia were seen at that time. 



On the next day in company with Harold Davenport, a young 

 Catocala enthusiast, he took six ilias and one polygama, one 

 of the former being uxor or the white spotted variety, while 



