Obs. Within the limits of the United States, this handsome little Owl has, as yet, only been observed by Dr. Hoy, whose specimens were obtained at Racine, Wisconsin. It is alluded to as _Strix acadica_, and accurately described by Dr. Hall in his MSS. “Sketch of the Zoology of the district of Montreal,” though represented as of rare occurrence. It is probably a northern and northwestern species. In the paper cited above, Prof. Lichtenstein regards this bird as the adult _Nyctale acadica_, and this appears to be the opinion also of the Prince of Canino (Cons. Av., p. 54). It is about the size of _N. acadica_, but of the numerous specimens of that species which have come under our notice, not one has presented intermediate characters, or has otherwise excited a suspicion that the two species were identical. We at present consider them as distinct species. We have no doubt that this bird is the _Strix albifrons_, Shaw, a species which has been lost sight of for upwards of fifty years; but for the gratification of students who may not have access to the necessary books, we append the original descriptions:— “Ferruginous brown Owl, paler beneath, with the forehead white, and the remiges barred with black and white. “The very curious and diminutive species of Owl here represented in its natural size, has perhaps never been either figured or described. It is a native of North America, and particularly of Canada. The supposed female is destitute of the white forehead, which forms so conspicuous a character in the male. It belongs to the division of smooth or hornless Owls.”—Shaw’s Naturalist’s Miscellany, V. text, not paged, accompanying pl. 171. (1794.) The same species, and probably the same specimen, is described by Latham, in General Synopsis of Birds, Supplement II. p. 58 (1801). “White-fronted Owl, _Nat. Mis._, pl. 171. Size of the _Little Owl_. Length eight inches; general color of the plumage on the upper parts brown; the circle of the feathers round the eyes dark, fringed at the back part with white; between the eyes and over the bill and the chin white; the under parts from thence yellow buff; across the breast a pale brown band; on the wing-coverts a spot or two of white; the first five quills marked with a white spot on the outer, and the second quills with the same on the inner margins; the first quills serrated on the outer edge the whole length; the second quill the same, half-way from the tip; tail marked as the quills; legs feathered; bill black; toes dusky.