About the first of July I was informed by Mr. W. E. Saunders that shortly before, when out on one of his Ornithological and Botanical excunsions, he had seen Melitœa phaelon, in a cedar swamp, two miles from Komoka station, which is ten miles west of London, on the Grand Trunk line. I took the first favourable opportunity of getting a sign of that insect alive, which occurred on the ninth. I found the swamp, and soon saw the butterflies disporting themselves in the sunny spots, seemingly quite plentiful. They would not have been difficult to secure had the footing been solid, but a previous heavy rain had set that afloat. I took five, and saw quite as many more during the short stay I made in the woods.