212 THE CANADIAN ENTOMOLOGIST, 



might be due to their translation from their home in the Sierras to our 

 warmer chmate, and that succeeding broods would behave differently ; but 

 the second brood raised followed the same course as their ancestors. 



When preparing to pupate, they constructed loose cocoons of gray silk 

 mingled with hairs from their own bodies, either in folded leaves or next 

 to the dirt in the corners of their breeding box. In this they resemble 

 our Arctians generally. 



The eggs from which the larvae furnishing these notes were obtained 

 were sent me by my friend, Hon. C. F. McGlashan, of Truckee, California. 

 They were received by me July 5, 1885, just hatched, after having been 

 on the road six days. Those I bred the next year hatched in four days. 

 The food plant given me was Pentstemon, but I fed them on Ribes Aiir- 

 eum, or Missouri Currant, which they ate readily ; and I am of the 

 opinion, that like other Arctians, they are rather general feeders. 



The only species, besides this, that has a period of summer hiberna- 

 tion in the Bombycidse, so far as I have noticed, is the larva of Arachnis 

 Fida, Pack., described by Mr. Stretch in his Illustrations of Zygaenidje 

 and Bombycidse, page 84. This larva was found May 8th and did not 

 pupate till the middle of August, making at least 98 days without food. 

 The Leptardia larvae remained quiet under the food given them on the 

 earth of the breeding box, unless disturbed, when they would run rapidly, 

 like the species of Ardia. I believe Mr. Stretch says the Arachnis larvae 

 emitted a fluid just previous to pupation, similar to that emitted by a moth 

 when coming out of chrysalis. I did not notice whether these did the 

 same or not. 



The genus Leptarctia was founded by Mr. R. H. Stretch in his book, 

 already referred to, in the time of its publication from 187 1 to 1873. At 

 the time of writing the description of the genus he does not seem to have 

 known of Walker's description of Calif orn'ue, as he says nothing about it 

 till the close of the work in an addenda. He gives three species, Lena 

 and Deda by Boisduval, and Dimidiata named by himself Walker 

 described Californice in 1855 in British Mus. Cat. Lep. Het. Vol. 3, 

 placing it in the genus Nemeophila. In 1868 Boisduval described the 

 same form as Adnata, together with the two already mentioned, Lena and 

 Deda, placing them in the genus LitJiosia, but stating that in his opinion 

 they did not belong in that genus, but in one near Nemeophila. Dr. 



