230 THE CANADIAN ENTOMOLOGIST. * 



larva feeds by night and hides during the day, and is very easily reared in 

 confinement. 



Euchaetes egle, Harris. 



I placed a pair of reared specimens with a plant of Asclepias cornuti 

 under a net, and on June 3rd found the % depositing eggs. The eggs 

 are laid in batches on the under surface of the leaf, sometimes in a single 

 layer, and sometimes two or even three layers are superimposed one on 

 the other. They are deposited in and covered with fine short hair, thus 

 closely simulating the downy under surface of the leaves on which they 

 are laid. The eggs are smooth, spherical, pale green and sV inch in 

 diameter. The eggs began to hatch on the 14th. 



Larva green, }£ inch long and nearly cylindrical in shape, with the 

 segments strongly marked by the depth of the dividing incisions. Head 

 shining, glossy black, subquadrate and very faintly bilobed. There are 

 eleven rows of tubercles arranged in two ranges on each segment ; the 

 tubercles of the anterior range alternating with those of the posterior 

 range on the same segment, one of the tubercles being on the dorsal line. 

 The tubercles are small, but slightly elevated above the surface, and of the 

 same color as the body. Each tubercle gives rise to one or two black and 

 several fine white hairs. Legs and prolegs are tipped with reddish-brown. 



This carries the history of this insect to the point where Prof. Lintner, 

 of Albany, N. Y., begins in his "Entomological Contribution, No. II.," 

 page 136 of the "Twenty-fourth Report on the State Museum," to which 

 readers are referred for the remainder of its history. 



The insect completes its cycle in from 48 to 50 days, has here three 

 broods during the season, and hybernates in the pupa state. A few of the 

 pupae from second brood (and probably also of first) hybernate. It is 

 extremely subject to the attack of a small ichneumon fly, so much so that 

 out of two hundred and fifty odd larvae (gathered and raised by me in the 

 summer of 1878) only twenty-eight were non-ichneumonized, and of these 

 twenty-eight only nine yielded imagines after hybernating ; the rest had 

 dried up. The first brood reared from eggs last summer did as well as 

 any other species. The fall brood (from eggs) made pupae readily, but 

 it remains to be seen how they bear hybernating. 



I have found and reared the following larvae, but my notes are too 

 imperfect to give descriptions of them : 



Chrysophanus thoe Bd.-Lec, on Rumex Britannica L. 



