Wilsonia canadensis Descriptions of First Plumage of Certain North Am. Bbs. Wm. Brewster. 38. Myiodioctes canadensis. First plumage: female. Remiges, rectrices, etc., similar to the adults. Rest of the upper parts, including wing-coverts and sides of head, uniform deep dull cinnamon; the greater coverts tipped with fulvous. Throat, breast, and sides very light cinnamon, tinged with olive. Anal and ab- dominal regions pale sulphur-yellow. No conspicuous spots, stripes, or markings anywhere. From a specimen in my collection shot at Upton, Me., August 4, 1874. This bird was so young as to be scarcely able to fly, and, with the rest of the brood, was attended by the female parent. Adult in autumn: male. Similar to adult in spring, but with the yel- low of the under parts much more intense, and the black spotting on the breast slightly clouded by the yellow tipping of the overlapping feathers. From a specimen in my collection shot at Upton, Me., August 29, 1874. Young in autumn: male. Pileum and back greenish-olive; nape and rump bluish-ash, slightly tinged with olive. Centres of a few feathers on the forehead and cheeks, with a continuous line along the side of the neck to the breast, dusky-black. A broad band of very small spots (each one not more than one quarter of the size of those exhibited in the adult plumage) across the upper part of the breast black. Otherwise similar to the adult. In “History of Birds of North America,” Vol. I. p. 320, Mr. Ridgway says, “In the young [these spots] are obsolete.” Bull. N. O. C. 3, April, 1878. p. 60-61.