In the month of July, 1875, I chanced to be in the catskill Mts., when Mr. Mead discovered the food-plant of tharos, as detailed by him in Vol. vii, Ent., p. 161, this being the common wild Aster. A. Novaangliæ, and I obtained from him a cluster of eggs; also afterwards got others for myself by trying the females in bags over the stems of the same plant. The larvæ hatched, and while in their younger stages I brought them to Coalburgh. On the journey, stopping at several points, I had to give them leaves of such species of Aster as I could find, and they are any and all readily–even German Asters from the garden.