ENTOMOL oaic u L Co NT RIB UTIONS. 185 



time from nine-tenths of an inch to one inch and a fourth, hut died 

 before attaining maturity. 



Dr. Fitch, from a comparison of colors and markings, regards this 

 species as identical with the European E. caja (Linn).* Dr. Packard 

 finds indisputable distinctive features in the stouter body, shorter wings 

 and prominent antennal pectinations of our species. Specimens, 

 however, have been taken in Labrador, which Packard has deter- 

 mined to be E. caja, and which he represents as giving evidence of 

 introduction. He states that " the coloration and the markings are 

 the same, and it can scarcely lay claim to be considered as a climatal 

 variety. The patagia are white in the Labrador specimen, and 

 brown in the English ; this is the principal distinction." 



Of its larva, Packard states : " It occurred at Gore Island, in 

 Southern Labrador, wandering over the herbage. At Caribou Island, 

 they were found in July, in various stages, feeding on Potentilla 

 anserina. The larva was also found, full fed, crawling over herbage, 

 on June 15th, at Little Mecatina Island, and it had no doubt hyber- 

 nated in this state. The body was black, with large white papillae, 

 from which, on the thoracic rings, rise short yellow hairs, like those 

 on the sides of the body. Above, the white papillae are large and 

 conspicuous, and from them arise long, thin, mostly irregular fascicles 

 of pale gray hairs, with shorter and fewer black hairs, the longer ones 

 equaling in length the breadth of the body. II is of the usual size, and 

 its tricolored hairs and white papillae give a striking appearance to 

 this handsome larvae. It began to spin a cocoon June 26th, and 

 the moth appeared July 27th."f 



I know of no description of the mature larva of E. Americana to 

 compare with the above. That of Dr. Fitch (loc. cit.) does not per- 

 tain to our native species, (although associated with an excellent des- 

 cription of the imago), but is obviously taken from European sources, 

 and refers to Euprepia caja. 



E. Americana has been taken in several places in Canada and in 

 New York, in Massachusetts and on Lake Superior. 



* Noxious Insects of New York, Reports, 6-9, p. 234. 

 iProc. Bost. Soc. N. H., 1868, vol. xi, p. 34. 



