evolutions, the light from their ruby necks would now and then flash in the sun with gem-like radiance; and as they now and then hovered motionless, the broadly-expanded tail,—whose outer feathers are crimson-purple, but when intercepting the sun’s rays, transmit orange-colored light—added much to their beauty. A little _Banana Quit_ (_Certhiola flaveola_), that was peeping among the blossoms in his own quiet way, seemed now and then to look with surprise on the combatants; but when the one had driven his rival to a longer distance than usual, the victor set upon the unoffending Quit, who soon yielded the point, and retired, humbly enough, to a neighboring tree. The war, for it was a thorough campaign, a regular succession of battles, lasted fully an hour, and then I was called away from the post of observation. Both of the Humming Birds appeared to be adult males.” In the United States, there have been discovered as yet not more than five species of Humming Birds, including that which is presented to the reader in our present plate. They are the ruby-throated Humming bird (_Trochilus colubris_), which is the much-admired little species everywhere common in the summer-time, in the States on the Atlantic; the Mango Humming Bird (_T. mango_), an abundant South American and West Indian species that occasionally visits Florida, as above stated; the Anna Humming Bird (_T. Anna_), a species of California and Mexico, the most beautiful of the northern species, and which derives additional interest from the fact that it was named by an eminent French naturalist, in honor of Anna, Duchess of Rivoli, whose husband, General Massena, Duke of Rivoli, the distinguished officer of the armies of the Emperor Napoleon I., founded the ornithological collection which now belongs to the Academy of Natural Sciences of Philadelphia. In addition to these, are the rufous-throated or Northern Humming Bird (_T. rufus_), a western species, which extends its range on the Pacific coast to a high northern latitude, and the bird now before us. Another species or two have been named as inhabiting California, without it being stated whether the upper or lower divisions of that country was intended. They are not known to inhabit that portion which is one of the States of this Union, though it is quite probable that others of the numerous Mexican species will be found extending their range into the western and southwestern territories. Within the limits of the United States, the Humming Bird now before the reader, has been noticed only by Dr. Heermann, whose fine collection made in California contained numerous specimens. He detected it in one locality only, which was the burying-ground at Sacramento city. There several pairs remained during the season of incubation, and reared their young, finding suitable food and protection amongst the flowering plants, with which, with great feeling and propriety, that last resting-place of the emigrant and stranger has been adorned.