232 



NOllTH AMEUICAN IHKDS. 



B> {Xnri/rafjecr.) !'■!! cylindrii'nl, scarcely or not at all hiphor than 

 lifoiul; its li|) ilcpivsr.iMl. Size siimll (i. o. loss than 15 inches Iv ■;). Color 

 iiniforni liliic (ir willi a.siiy on body, and hlaiik wings and tail. 



Color asiiy, with wings and tail mainly black. Cnlmeu convex, 

 pi"'vs slightly concave. Nostrils covered by the short nasal tull . Pkicorviis. 



( . Hir uiiifDnn blue, l)riglitcr on the head; the thro.'.t streaked with 

 whitish. Ciilmcn straight; gonys sliglitly convex. Nostrils completely 

 exposed ; no nasal tufts Oi/mnokitta, 



Genus C0RVT7S, LiNNiuua. 



Corvus, LiNN^tTs, Syst. Nat. 1735. (TyiM>, Corvus corax, L.) 



Gen. Chaii. The nasal feathers lengthened, reaching to or beyond the middle of the 

 bill. Nostrils large, circular, overhung behind by membrane, the edges rounded else- 

 where. Rictus without bristles. Bill nearly as long as the tarsus, very stout; much 



Oirrus mmimmis. 



higher than broad at the base ; culmen much arched. Wings reaching nearly or quite to 

 the tip of the tail, the outer four i)nmarics sinuated internally. Tarsi longer than the 

 middle toe, with a series of small scales on the middle of each side separating the anterior 

 scutellate portion from the posterior continuous plates. Si<les of the head occasionally 

 with nearly naked patches. Tail graduated or rounded. 



