This bird is abundant in Mexico. It was observed to be quite numerous on the _tierra templada_ or table lands, and in the hills bounding the plains of Perote and Puebla on the east, by Mr. William S. Pease, an enterprising naturalist, who accompanied the army of the United States, under General Scott, throughout its campaign in Mexico. Mr. Pease learned that it lived on the sides of the hills throughout the year, and was called by the inhabitants, the _pepe verde_. His collection, now included in that of the Academy of Natural Sciences of Philadelphia, contained very fine specimens of both sexes, though his notes contain little information respecting them. M. Lesson, an eminent French naturalist, was the first to describe this species. His description, from a Mexican specimen, is in the Révue Zoologique for 1839, p. 100. (Paris.) The first published notice of it as a Texan species is by Mr. Geo. N. Lawrence, in the Annals of the New York Lyceum of Natural History, vol. v., p. 115. The credit of having first discovered it within the limits of the United States is due to Col. George A. M‘Call, Inspector General of the United States Army, who sent specimens to the Philadelphia Academy, from Texas, several years since, and who has most kindly favored us with the following note: “The first specimens of this Jay that I saw within the territory of the United States, were in the forests that border the Rio Grande, on the south-western frontier of Texas. There they were mated in the month of May, and no doubt had their nests in the extensive and almost impenetrable thickets of _Mimosæ_, which are commonly denominated _Chaparral_. Of the number of their eggs, or the description of their nests, I learned nothing, not having been able to discover their abode, precisely; but from the jealousy and pugnacity which they manifested on the approach or appearance of the large boat-tailed blackbird of that country (_Quiscalus macrourus_,) which was nesting in great numbers in the vicinity, I felt satisfied that the Jays were, at the time, also engaged in the duties of incubation and rearing their young. In character or temperament they appeared to be very active and lively, though less noisy than some other species of their family, and their gay plumage was exhibited to advantage as they flitted from tree to tree, or dashed boldly in pursuit of such of their more plainly attired neighbors as ventured to intrude upon their domain.” Captain J. P. M‘Cown, another accomplished officer of the United States Army, also observed this bird in Texas, to the natural history of which country he has contributed a large amount of most valuable information. From the interesting memoranda which he has very generously and promptly furnished for our use in the present work, we make the following extract: