INSESSORES: COLOPTERID^E. 1 65 



ately crested, the general color olive above, pale yellowish 

 beneath, with a darker patch on the sides of the breast. 



The Olive-sided Flycatcher, C. borealis, Baird, of Green- 

 land and rare upon the Atlantic and Pacific coasts of 

 North America, is seven and a half inches long, the wing 

 less than four and a half inches ; in addition to the above- 

 mentio'ned characteristics, it has a silky white tuft on 

 each side of the rump. 



The Short-legged Pewee, C. Richardsonii, Baird, of 

 North America, is over six inches long, the wing over 

 three and a half inches. 



The Wood Pewee, C. virens, Cab., of Eastern North 

 America to the high central plains, is six and a quarter 

 inches long, the wing three and a half inches ; the upper 

 parts, side of the head, neck, and breast, dark olivaceous- 

 brown ; the lower parts pale yellowish tinged with ash 

 across the breast ; a ring around the eye, and two narrow 

 bands across the wing, white. The Wood Pewee loves 

 the dark, quiet retreats of the forest. Here, sitting on a 

 dry branch, it may always be found in summer and early 

 autumn, watching for insects, and, with its wings quiver- 

 ing, uttering its low, melancholy notes. It makes its nest 

 on a horizontal branch, constructing it of lichens and 

 mosses without, and of fine grasses and hairs within. 

 The eggs are four or five, light yellowish, and spotted 

 with reddish on the larger end. 



The Genus Empidonax is characterized by long tarsi, tail 

 a little shorter than the wings, head moderately crested, 

 the general color olivaceous above, yellowish beneath. 



Traill's Flycatcher, E. Traillii, Baird, of the Eastern 

 United States to Mexico, is six inches long, the wing 

 two and nine tenths inches. 



The Little Flycatcher, E. pusillus, Cab., of Western 

 North America, is five and a half inches long, the wing 

 two and eight tenths inches. A. 



