Much smaller than the preceding; bill straight; wing rather long, third quill longest; tail moderate; tarsus very short; legs rather slender; two outer toes united at base; entire plumage above dark shining green, darker and generally tinged with brownish on the head, and with numerous very small spots or points of white on the forehead; quills brownish-black, edged with green on their outer-webs; secondaries white at their bases, and all the quills with white spots on their outer-webs, regularly disposed, and forming three transverse bands on the wing; outer feathers of the tail white, irregularly marked on both webs with green; middle feathers green; breast bright reddish chestnut, forming a wide transverse band; throat, and ring around the back of the neck and abdomen, white; sides, flanks and under tail-coverts spotted with green; inferior wing-coverts white, with green spots; bill dark; feet lighter. Younger or female? Like the preceding, but with the pectoral band green, uniform with the color of the upper parts; white of the throat tinged with dull yellow. Dimensions. Total length of skin, 7¼ inches; wing, 3¼; tail, 2½ inches. Hab. Texas, Rio Grande (Capt. McCown, Mr. Clarke); Mexico (Lieut. Couch); South America. This handsome little King-Fisher, though well known as a bird of South America, has, within the limits of the United States, only been observed on the Rio Grande in Texas. Several naturalists, however, mention having heard of a small species of King-Fisher in Southern California, and it is probable that the present bird will yet be found inhabiting that State. This bird may very readily be distinguished from the common species of the United States by its small size and different colors; but there are other South American species of the same genus which it resembles. There is a group of these birds, the species of which, in fact, bear so great similarity to each other in form and in colors also, that they can be distinguished specifically mainly by their size. This group embraces _Ceryle amazona_, _inda_, _superciliosa_, _Cabanisii_, and the bird now before us. The first is as large as our Belted King-Fisher (_Ceryle alcyon_), and has been found in Mexico. All of these species are colored very much like the present bird, though, as above intimated, presenting marked difference in size. The King-Fishers are most abundant in the southern regions of the world, and the preceding two species are all that have ever been noticed within the limits of the United States, though several others inhabit Mexico. Two species also are known as birds of Europe, though one of them (_Ceryle rudis_), like our second species in the United States, is a visitor only in the southern countries of that division of the globe.