97 



on the 25th of that month. The dates of capture of a large col- 

 lection obtained by miscellaneous work during two successive years 

 in Central Illinois, ranged from July 13 to August 24. 



The Yellow-headed Cutworm. 



(Hadena arctica, Boisd.) 



This is likewise apparently a single-brooded species, occasionally 

 very injurious to corn, still destructive, according to our observa- 

 tions, the last of May, at which time, however, many of the 

 larvse are full grown. We have collected the imago at Champaign 

 in the middle of July. 



The larva is grayish white (often with a smoky tinge), with 

 transluscent skin, easily showing the tracheso, the movepients of 

 the heart, and the tubular Malpighian bodies within. The head 

 is bright reddish brown or bay, darker than the cervical shield^ 

 which is a pale, dirty yellowish brown. Mouth, parts yellow; jointed 

 legs yellow, darker at tips. 



