94 BIEDS. 



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



■f Plumage glossy black Coevus, 1. 



** Tail longer than the short, rounded wings. {Q-arruUnm) 

 j: Conspicuously crested; chiefly Wue; quills black-barred. 



CYAmiBUS, 3. 

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



Pica, 3. 

 XXX Chiefly gi-ay, no blue; tail scarcely longer than wings. 



Pbeisobbus, 4. 

 /. CORVUS, Linnseus. Raveits. 



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. 

 (6'. carnivonts, Bartr.) 



2. C. americanus, Aud. Ceow. 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 Ceow. 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. melanoleuca (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. Blub Jays. 

 1. C. cristatus, (L.) Sw. Blue Jay. Blue; collar 

 and frontlet black; grayish below; wings and tail clear 



