. Ontario Sessional Papers, 1919, . :— 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 appearancein Ontario of this butterfly, since it agrees with tliat noted 1)y other 190Q, ilr. C. W. Xash, Toronto, states that he saw the ]\Iouarch first on June]4th, and in 1901, Mr. J. A. Moffat, London, noted its arrival there on June 12th. While the middle of J
. Ontario Sessional Papers, 1919, . :— 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 appearancein Ontario of this butterfly, since it agrees with tliat noted 1)y other 190Q, ilr. C. W. Xash, Toronto, states that he saw the ]\Iouarch first on June]4th, 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 arrivalill this Province, there must be at least isolated butterflies that return muchearlier. With reference to this 1 find in my notes:— June 19th. Mr. Martin saw, on milkweed plants, a nearly full-grownMonarch larva, also a much smaller one. I^ter in the, day we found the larger larva but did not get the one we captured was one and three-fourths inches in length. The egg from. Fig. 1.—Gall produced by Xeuroterus flavipcs Gill onBur Oak, Querciis macrocarpa Michx. which this larva emerged must have been deposited the end of ]!klay or very earlyin June. There are notes under two other dates in June. June 24th. Anosia butterflies plentiful around the milkweeds at MimicoCreek. June 27th. In the same locality as the preceding, caught three males andtwo female butterflies. These specimens were all much faded and worn, the wingmargins were also badly torn. The butterflies were frequently mating at thistime. Xothing of interest appears to have been observed for a month, as the nextnote reads:— July 27. Many ]\inarch butterflies ovipositing, all the specimens capturedwere faded and torn. Larva? were frequently seen, these varied from one-half tofull-grown; ten of the latter were collected. July 30tli. • Several of the larva^ taken on the 27tli ha\e jnipated. With very little further feeding these larva? eventually a
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