CASSIN KINGBIRD. 
448. Tyrannus vociferans. 9 inches. 
These birds are very much like the last, except that the 
throat and breast are darker. 
DERBY FLYCATCHER. 
449. Pitangus sirfphuratus clerbianus. 10b> inches. 
This is one of the largest and most handsome of the family. 
With its bright yellow crown, surrounded with a black border 
and this by white and another band of black, with the under 
parts a bright yellow makes him one of the most attractive. 
They are found, though, only on the southern borders of Texas 
into Central America. (Not illustrated.) 
SULPHUR-BELLIED FLYCATCHER. 
451. Myiodynastes luteiventris. 8 inches. 
Unlike any of the previous, and only found breeding in the 
mountains of Arizona south to Panama. The back is grayish 
streaked with black, the tail a dull reddish brown, and the un¬ 
der parts yellow, streaked on the sides with dusky; a white 
throat patch, bordered with black; the crown with a concealed 
yellow spot bordered with dusky and a narrow white stripe over 
the eye. They place their nests in the cavity of some tree, and 
lay from three to five buff colored eggs spotted and blotched 
with brown and lavender (1.05 x.75). 
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