Packard.] 34 [October 17, 



species. It occurred in the larva state at Gore Island, near the Little 

 Mecatina Island, in southern Labrador, where the caterpillars were 

 full fed, and wandei'ing over the herbage. This specimen is much 

 smaller than a specimen before me from England, but the coloration 

 and markings are the same, and it can scarcely lay claim to be con- 

 sidered as a climatal variety. At Caribou Island the larva; were 

 found in July in various stages, feeding on the Potentilla anserina, 

 near the sea. A specimen from Okak varies from the Gore Island 

 specimen in having less whitish marks, as they are inclined to be obso- 

 lete. The patagia are white in the Labrador specimens, and brown 

 in the English specimens ; this is the principal distinction. 



The larva was found full fed, crawling over herbage on June 15th, 

 at Little Mecatina Island, and it had no doubt hybernated 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 equalling in length 

 the breadth of the body. 



It is of the usual size, and its tri-colored hairs and white papillae 

 give a striking appearance to this handsome larva. 



It began to spin a cocoon June 26, and the moth appeared July 27. 



Platarctia borealis Packard, Proc. Ent. Soc. Phil., iii. p. ill. 



1864. 



Arctia borealis Mbschler, Wien. Entom. Monatsch. iv. p. 360. 

 Taf 9. %. 3. 1860. 



Okak, Rev. S. Welz. 



Arctia Quenselii Paykull, Hiibner. Christoph, Ent. Zeitung, Stet- 

 tin, xix. p. 312. 1858. 



Arctia speciosa Mbschler, Wiener Ent. Monatsch. viii, 1864. p. 195. 

 Taf. 5. fig. 13 i, 14 ?. 



Nemeophila (Chionophila) Quenselii Guenee, Ann. Soc. Ent. France. 

 4" Trim. 1864. 



It is very desirable to have specimens from the Alps and arctic re- 

 gions of Europe, before deciding on the identity of so variable a 

 species as the present. However entomologists may differ as to the 

 specific character of this form, there can be no doubt that with A. 

 Dione and A. virguncula of Kirby, it forms but a section of the ge- 

 nus Arctia as restricted by us in the Synopsis of the Bombycidie of 

 the United States. (Proceedings of the Entomological Society of 

 Philadelphia, Vol. iii, p. 115, 1864). 



