94 BIRDS. 



* Tail much shorter than the long, pointed wings. (Corvince.) 



\ Plumage glossy black CORVUS, 1. 



** Tail longer than the short, rounded wings. (Garrulinm.) 

 \ Conspicuously crested ; chiefly blue ; quills black barred. 



CYANUHUS, 3. 

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



PICA, 2. 

 \\\ Chiefly gray, no blue; tail scarcely longer than wings. 



PERISOHEUS, 4. 

 /. CORVUS, Linrueus. 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. Also European. 

 (C. carmvorus, Bartr.) 



2. C. amer/canus, Aud. CHOW. 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. FISH 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. me/ano/euca (Vieill.) var. hudsonica, (Sab.) Coues. 

 MAGPIE. Lustrous black; belly, shoulders, and wing- 

 edgings white; L. 19; "W. 8; T. 13, much graduated. 

 Western, E. to L. Michigan. 



3. CYANURUS, Swainson. BLUE JAYS. 

 1. C. or/status, (L.) Sw. BLUE JAY. Blue; collar 

 and frontlet black; grayish below; wings and tail clear 



