64 . THE CANADIAN ENTOMOLOGIST. 



passed the second moult 23rd April, the third 4th May, and pupated 

 22nd May. I succeeded in getting but the one Ijrva to pupation, and 

 having accidentally injured tlie surface of the pupa, 1 put it in alcohol. 

 The next year, M. Chretien sent more eggs in same way. They hatched, 

 and the larvae went at once into lethargy, as before. They came back 

 from New York, 6th April, 1888. I recorded that one was about to pass 

 its first moult on 20th Apri', that two were at same time about to pass 

 second, and two had already passed second on 5th June ; that the appear- 

 ance and attitudes of these larvae are very much like noctuid larvae. They 

 are obese, sluggish, and spend most of the time lying on their backs or 

 sides on the surface of the sod, the head and next segments bent in ; or 

 else they lie in a complete ring, the tail and head meeting. If resting on 

 a stem of grass, the body is supported by the pro-legs only, the anterior 

 segments arched, the feet not touching the stem. Now and then I found 

 one feeding, but they did this mostly at night. On 13th June, one larva 

 was evidently near pupation, by the pale hue of the skin and the disap- 

 pearance of the lines. I record that it lies on its side and back between 

 two stems, wedged in, its feet in the air. Next day it had got away from 

 the stems and was lying on its back, much doubled up (Fig. 2) The follow- 

 ing day it had pupated just where I had last seen it, unattached by the tail. 



By 17th, I noticed that a second larva had fixed itself as I had recently 

 seen one of Erebia Epipsodea do when about to pupate. It was nearly 

 an inch clear of and above the sod, had drawn a few leaves of grass to- 

 gether by a few threads and rested among them upright, holding to the 

 edge of a leat by the prolegs, the dorsum much bent and turned to 

 the left. An hour later the larva had loosed its hold and slid down, and 

 was sticking upright in the sod, but had reversed its position, the dorsum 

 now facing to the right. There it pupated, upright. 



On 1 8th, another larva was lying on its back, like the first one 

 mentioned I had had a long sea-'ch for it, and feared it had escaped, 

 but by clipping the grass stem by stem, it was found low down in the sod, 

 and there it pupated, 20th. The fourth also pupated, but among the 

 roots, and was found only by pulling the sod in pieces. The fifth pupated 

 in the night of 4th and 5th July. It had fallen off the bag which covered 

 the plant, and was lying motionless on the earth. I laid it on its side 

 among the leaves, and there it pupated, spinning no thread. From these 

 pupae I got five butterflies, the first one on 28th June, the last in middle 

 of July. 



