62 



Studies on Life-hiHtory of Bomhycine Moths. 



iug of feathered hairs, is well developed in stage III, though not 

 so large in proportion as in the final stage. 



Fig. 3. 



Notes on the transformations of Orgyia cana Hy. Edwards. 



Mr. Dyar has already given a detailed description of the life- 

 history of this species in Psyche, VI, No. 189, January, 1»92. He 

 describes seven larval stages. The following notes are based on a 

 brood hatched from eggs kindly sent me by Mr. Dyar from the 

 Yosemite Valley, September 25th ; they hatched in Providence on 

 the 30th of the May following, and fed on young tender oak leaves. 

 I publish them as they contain references to the glandular hairs 

 and a few points not noticed by Mr. Dyar. 



Larva, stage I. — Length 3 mm. Head, body, and hairs all black, 

 except the hairs situated low down on the sides, where they are gray. 

 The pair of lateral piliferous tubercles on the sides of the protho- 

 racic segment is very distinct and prominent. All the hairs (except 

 those low down on the sides of the body, where they are gray) are 

 black, and of the same general length as in the freshly hatched 

 larva of 0. leucostiyma. Two days after hatching the body is 



