446 ENTOMOLOGICAL NEWS [Dec., 'lO 



it. Head, true and prolegs, body color. Head somewhat cara- 

 like with black lateral dash. Underside, pale lead color with 

 distinct round black spots. A middorsal longitudinal lighter 

 stripe. On May I5th all of the largest ultronia larvae died 

 apparently in the last moult. The smaller ones stiffened in 

 death and appeared life-like. They fed on wild plum and 

 seemed to be like the larvae of C. paranympha in almost every 

 respect, even habits. 



On May I5th the larvae of C. parta were two and one 

 fourth inches long, light grayish grown, striped longitudinally 

 with a middorsal row of elliptical gray spots, disconnected. 

 Head of the cara type with a broad black, lateral dash from 

 the mouth around to the mouth. The upper lobes of the head 

 yellow brown. The cross elliptical hump over the third pair 

 of abdominal prolegs, light yellow brown inside a narrow, black 

 encircling line. True and prolegs light gray-brown. Lateral 

 row of very short setae. 



The larvae of unijuga began spinning May nth, those of 

 innnbens on the iQth and parta on the 2ist. 



The innubens larvae of this year were from eggs laid by a 

 female scintillans and like the brood of last year were perfectly 

 healthy and grew fast but when crowded, they do not reach 

 the size of larvae in the woods. 



As the eggs of C. arnica are small, so are the larvae, light 

 yellow brown in color with a big round, light chestnut head. 

 The few specimens that the senior author had, refused both 

 white and bur oak leaves and died without eating. 



On the 23d of May, the larvae of C. parta were two and 

 three fourths inches long, wood brown, striped longitudinally 

 by lighter and darker bands, the striping more or less distinct. 

 The hump over the third pair of prolegs hardly lighter than 

 the dirty middorsal longitudinal band and not very con- 

 spicuous. The cross ridge over the eighth abdominal segment 

 distinct but not abnormal. The spiracular and the two (one 

 on either side) bands, flanking the middorsal band, darker 

 than the other bands. Head small, flat, obcordate, with lobes 



