94 BIRDS. 



* Tail much shorter than the long, pointed wings. {GorviiicB.) 



f Plumage glossy black Coii\tjs, 1. 



** Tail longer than the short, rounded wings. {Garruliii(e.) 

 X Conspicuously crested ; chiefly blue ; quills black-barred. 



Cyanocitta, 3. 

 XX Iridescent black and white; tail much longer than wings. 



Pica, 2. 



XXX Chiefly graj'-, no blue; tail scarcely longer than wings. 



Perisoreus, 4. 



/. CORVUS, Limifeus. Ravens. 



1. C. corax, L. Raven. Feathers of throat stiffened, 

 elongated, narrow and lanceolate, their outlines very 

 distinct; L. 25; W. 17; T. 10. N. Am., chiefly north 

 and westward; rare E. of the Mississippi. x\lso European. 

 (C. carnworus^ Bartr.) 



2. C. americanus, And. Ckow. Feathers of throat 

 short, broad, obtuse, with their webs blended; gloss of 

 plumage purplish violet; head and neck scarcely lus- 

 trous; L. 20; W. 13; T. 8. E. N. Am., chiefly eastward; 

 abundant. (C. frugivorus, Bartr.) 



3. C. ossifragus, Wilson. Fisii Crow. Gloss of 

 plumage green and violet, evident on head and neck; 

 L. 16; W. 11; T. 7. New England to Florida, chiefly 

 southern, and found only along the coast. (C. maritimus^ 



Bartr.) 



2. PICA, Cuvier. Magpies. 



1. P. pica (L.) var. hudsonica, (Sab.) Coues. Magpie. 

 Lustrous black ; belly, shoulders, and wing-edgings 

 white ; L. 19; W. 8^; T. 13, much graduated. West- 

 ern, E. to L. Michigan. 



3. CYANOCITTA, Strickland. Blue Jays. 



1. C. cristata, (L.) Str. Blue Jay. Blue; collar 

 and frontlet black ; grayish below; wings and tail clear 



