EGGS OF NORTH AMERICAN BIEBS. 81 



Valley in Texas, south through Eastern Mexico to Central 

 America and Northern South America. 



439. Buff-bellied Hummixg-bird, Amazilia cerviniventris. 

 Eggs, unknown. Breeds in the valley of the Lower Rio 

 Grande, south into Eastern Mexico. 



440. Xantus's Hu:mming-bird, JiasiUnna xantiisi. Eggs ; 

 .30 -|- .45 to .31 -|- .47. Nests composed of cotton, s})ider 

 webs, etc., and attached to small twigs. Breeds in Lower 

 California. 



441. Bkoad-billed Humming-bird, lache latirostris. Eggs, 

 unknown. Breeds in Southern Arizona and Western Mexico. 



ORDER XVIL — PASSERES. Perching Birds. 



Eggs of varying form and colors, spotted or plain, deposited 

 in nests that are, in the majority of cases, placed in trees or 

 bushes, but often on the ground, and, in some species, in holes. 



Family XLV. — TYRANNID^. Tyrant Flycatchers. 



Eggs, as a rule, spotted ; and, when plain, some specimens 

 among them show indications of markings. Deposited in 

 nests that are, with one or two exceptions, placed at an 

 elevation above the ground. 



442. Fork-tailed Flycatcher, Milvulus tyranims. Eggs, 

 3 or 4, oval, similar in general markings and color to those of 

 No. 444; .65 + .88 to .68 + .90. Extralimital ; breeds in 

 Mexico and southward throughout Central and most of South 

 America. Bird accidental in the United States. 



443. Scissor-tailed Flycatcher, M'dvnlas forficatus. 

 Eggs, 3 to 5, varying from rounded oval to oval, similar in 

 color to those of No. 444, but the spots are, as a rule, of a 

 rounded form ; .60 -{- .80 to .75 -|- .92. Breeds in Texas and 

 Indian Territory, in June and July. 



444. Kingbird, Tyrannus tyrannus. (Type, Plate X.) 



