Last year I observed a female comyntas depositing eggs upon Desmodium Marilandicum Gray, a common and troublesome weed in this region, called “shoestring” by the country People, from its toughness of stem,and bearing a sticking burr in the fall. On 9th July, 1876, I set a female in a bag over a stem of this plant, and several eggs were laid on the tender tenlinal leaves. Mr. Mead noticed that this butterfly laid also on red clover, and a number of eggs were obtained by the same process, on the 13th July, deposited on the young leaves and on the flowrets of the head.