Since the commencement of the military operations of the United States in Texas, New Mexico and California, and the subsequent incorporation of those countries into this great Confederacy, their natural history has attracted a large share of the attention of naturalists and students at home, and also of many highly accomplished officers of the army. In fact, to the latter gentlemen is to be awarded the high merit of having contributed, notwithstanding the engrossing and deeply responsible character of their professional duties, a large portion of all that is known relative to the zoology of those vast, and especially in a scientific point of view, very interesting regions. A valuable notice of the Massena Partridge is given by our highly esteemed friend, Col. McCall, in his “Remarks on the habits of birds met with in Western Texas, between San Antonio and the Rio Grande, and in New Mexico, with descriptions of several species believed to have been hitherto undescribed,” published in the Proceedings of the Philadelphia Academy, V. p. 213, (June, 1851,) which we have taken the liberty of transferring to our pages. “This species was not seen before crossing the San Pedro, but it was not long until it made its appearance in the waste and rocky region into which we then entered. And from that time until we reached the Rio Pecos, a distance of 140 miles, (westwardly by the route travelled,) it was frequently seen, though I should not say it was very common. This region is a desert of great length from north to south, our trail crossing it at nearly right angles. The general face of the country is level, and consists of either a crumbling argillaceous limestone, or a coarse grey sand, producing nothing but a sparse growth of sand plants. Water is found only at long intervals, and except at those points there is little cover for game, and apparently less food,—the principal growth being _Cacti_, of which the most common is _Cactus arborescens_; yet here, amongst projecting rocks, or on the borders of dry gullies, or in loose scrub, I found the Massena Partridge in all the beauty of his rich and varied plumage.