“During the several years that I was in Texas, I frequently saw this Jay, but never above Ringgold Barracks or north of the woods which skirt the Rio Grande. It appeared to prefer the Acacia groves which have sprung up where the ground has been overflowed. Though I have shot numerous specimens it is rather a cautious bird. I have seen nests high up in the trees alluded to, and always supposed them to belong to this species, but was never clearly satisfied, though I have no doubt that it breeds in Texas.” The figure in our plate is about three-fourths of the natural size. The plant represented is the _Salvia coccinea_, which is a native of the southern parts of North America. DESCRIPTION AND TECHNICAL OBSERVATIONS. Genus Cyanocorax, Boie, in Oken’s Isis, 1826, part II., p. 977. Bill rather large and strong, with the ridge of the upper mandible curved gradually from the base to the point—ridge of the lower mandible curved upwards. Nostrils at the base of the bill, in rather a large membrane, and partially concealed by projecting feathers. Wings moderate, rather rounded, fourth, fifth and sixth primaries usually longest; secondaries long, exceeding some of the shorter primaries. Tail rather lengthened and rounded; tarsi robust, rather long; toes and claws strong. Head usually with a crest or with the frontal plumes erect and crest-like. Plumage of various colors, mostly with some part of greater or less extent, blue. Exclusively American. Type _C. pileatus_. (Wagler.) Cyanocorax luxuosus. (Lesson.) Garrulus luxuosus. Lesson Revue Zoologique 1839, p. 100. (Paris.) Cyanocorax luxuosus. (Less.) Du Bus, Esquisses Ornithologiques, part IV. pl. 18. (Brussels.) Form. Feathers of the head in front or at the base of the upper mandible, short, erect and rigid—other plumage of the head above somewhat elongated; wings rather short, with the fourth and fifth quills slightly longest; tail ample, and rather long, with the central feathers longest; bill strong, tarsi and feet moderate, claws strong and curved. Dimensions.—Total length (of skin) from the tip of the bill to the end of the tail, about 10½ inches, wing 4¾, tail 5½ inches. Colors.—Short feathers at the base of the bill, blue, which color is succeeded by a transverse band of bluish white; cheeks and head above, pale azure blue; sides of the head in front of and behind the eyes, throat and neck in front fine silky black, which forms a wide mask extending to the breast. Body above, wings and central tail feathers, fine parrot-like green, deepest on the tail, entire inferior surface of the body pale yellowish green. External tail feathers, pale yellow. Bill and feet dark colored. The green feathers of the tail running into blue at their ends, and nearly black on their under surface. Sexes similar. Habitat. Mexico and Texas—Specimens in the Museum of the Academy of Natural Sciences, Philadelphia.