THE CANADIAN ENTOMOLOGIST. 



on 23rd, two on 24th, and these were all I saw up to the last date, 

 although I carefully watched for them. Shortly after, both sexes became 

 common. On the 26th I took 7 $ , and tied them up in separate bags, 

 on branches of Aster. The next day 6 of the 7 had laid eggs, the 

 clusters varying from about 50 to 225 eggs each. They were always laid 

 on the leaves, and usually on the under side of them, in rows nearly or 

 quite straight, and touching each other. In the larger clusters the layers 

 were three deep. These gave me hundreds of caterpillars, and each 

 brood was kept separate. The butterflies began to emerge 29th June, the 

 several stages being thus : egg 6 days, larva 22, chrysalis 5. There were 

 four moults and no more, but much irregularity in every larval stage, so 

 that some of the butterflies did not emerge till 15th July. Just after these 

 larvae hatched I went to the Catskills, taking one brood with me, and 

 they reached chrysalis there, and in that stage were mailed back to Coal- 

 burgh. I returned by the time the butterflies from these chrysalids were 

 emerging. There was no perceptible difference in the length of the several 

 periods of this brood and the others which had been left at home, and 

 none of either lot became lethargic. In my absence the larvae had been 

 cared for by a member of my family, charged to note carefully all changes. 

 The butterflies from these eggs of May, with a single exception, were 

 tharos, and this one was marcia % , var. C. This was the second generation 

 of the season, counting the one which proceeded from the hybernating 

 larvae as the first. 



On 1 6th of July, at Coalburgh,I again obtained eggs from several females, 

 this time all tharos, as no other form was flying. The eggs hatched in 4 

 days, the larval stage was 22, and chrysalis 7 \ but as before, many larvae 

 lingered. The first butterfly emerged on i8th Aug. All were tharos, and 

 none of the larvae had been lethargic. This was the third generation in 

 succession, and from the second laying of eggs. 



On 15th Aug., at Coalburgh, I again obtained eggs from a single tharos 

 ^, and took them directly to the Catskills, and they hatched just as I 

 arrived there, 20th. This was the fourth generation of the season from 

 the third laying of eggs. The weather in Virginia had been excessively 

 hot, and so I found it on the journey, but on reaching the mountains it 

 was cool, and the nights decidedly cold. Two days after my arrival the 

 mercury stood at sunrise at 40°. September was a wet and cold p.Tonth, 

 and I protected these larv^ in a warm room at night, and much of the 

 time by day, for they will not feed when the temperature is less than 



