16 THE EEPOKT OF THE No. 36 



Coucerniiig the first to arrive of the migrants from tlie soiitli I have made 

 the following note: — 



June 15th. " Two specimens of Anosia were seen flitting about a few milk- 

 weed plants on the Old Belt Line, near the Humber; one of the butterflies ap- 

 peared to be ovipositing, but the eggs could not be found.'' 



The above apparently represents, in general, the date of the first appearance 

 in Ontario of this butterfly, since it agrees with that noted by other observers. 

 In 1900, Mr. C. W. Nash, Toronto, states that he saw the Monarch first on June 

 ] 1th, and in 1901, Mr. J. A. Moffat, London, noted its arrival there on June 12th. 



While the middle of June may be taken as the average date of their arrival 

 in this Province, there must be at least isolated butterflies that return much 

 earlier. 



With reference to this 1 find in my notes: — 



June 19th. " Mr. Martin saw, on milkweed plants, a nearly full-grown 

 Monarch larva, also a much smaller one." 



Later in the day we found the larger larva but did not get the smaller. 

 The one we captured was one and three-fourths inches in length. The egg from 



Fig. 1. — Gall produced by Neuroteras flavipcs Gill on 

 Bur Oak, Quercus viacrocarpa Michx. 



which this larva emerged must have been deposited the end of ^lay or very early 

 in June. 



There are notes under two other dates in June. 



June 21th. " Anosia butterflies plentiful around the milkweeds at Mimico 

 Creek." 



June 27th. " In the same locality as the preceding, caught three males and 

 two female butterflies. These specimens were all much faded and worn, the wing 

 margins were also badly torn. The butterflies were frequently mating at this 

 time." 



Nothing of interest appears to have been observed for a month, as the next 

 note reads : — - 



July 27. "Many M'^narch butterflies oxipositing, all the specimens captured 

 were faded and torn. Larvae were frequently seen, these varied from one-half to 

 full-grown; ten of the latter were collected." 



July ^lOtli. " Several of the larva? taken on the 27t]i have pupated." 



With vei'v little further feeding these larva? eventually all ])assed into the 

 chrysalid stage, and all emerged, sometime between the 9th and the 22nd of 

 August, the exact date unknown owing to absence from the citv. 



