. XXXVI. 95 



blue-barred ; outer tail feathers and secondaries tipped 

 with white; L. 12; W. 5; T. 5f. N. E. Am., abundant. 



4. PERISOREUS, Bonaparte. GKAY JAYS. 



1. P. canadensis, (L.) Bon. CANADA JAY. WHISKEY 



JACK. Ashy gray with blackish and whitish markings; 

 L. 10f ; W. 5f ; T. 6. Northern, S. to New England in 

 Winter. 



FAMILY XXXVL TYRAlJNIDjE. 



(The Flycatchers) 



Primaries 10; first more than f- length of second, and 

 one or more of them often attenuate ; bill broad, triangu 

 lar, depressed, abruptly hooked and notched at tip, with 

 long rictal bristles; commissure nearly straight; nostrils 

 small, usually partly concealed. Tarsus &quot;clamatorial,&quot; 

 the scutella extending around its back. Feet small, for 

 perching. Mouth capacious; notes simple, often pleas 

 ant; changes of plumage slight; ours mostly olivaceous. 



A large family of eighty genera, and more than three 

 hundred species; all American and mostly tropical. All 

 are insectivorous, most of them pre-eminently so; they 

 are, therefore, in our latitude, migratory. 



* First primaries evidently attenuate ; crown with concealed bright 



red or yellow crest (in adult). 

 f Tail widely forked, about twice as long as wings. 



MlLVULUS, 1. 



ft Tail nearly even, shorter than wings. . . TYRANNUS, 2. 

 ** First primaries not obviously attenuate ; crown plain, some 



times crested. 



\ Wings edged with chestnut, not much longer than tail ; length 

 8 or more ....... MYIARCHUS, 3. 



\\ Wings not chestnut-edged, not much longer than tail ; tarsus 

 longer than middle toe and claw; bill black; length 6| 

 to 7| ......... SAYORNIS, 4. 



