On the 14th June, at one of the excursions of the Ottawa Field Naturalists' Club to Cumberland, Ont., I was fortunate enough to find beneath an elm tree (Ulmus americana), a full-grown larva of Grapta J.Album, of which the following is a description:

Length, one and one-half inches. Shape slightly fusiform, gradually tapering to the end from fourth segment. General colour, a delicate glaucous green, or white washed with green—with black spines, which from the size of the body appear to be rather sparsely distributed. The three dorsal series of spines black, springing from a bright yellow field, which is three times the diameter of the base of the spine.