232 



NUliTH AMEUICAN lUKDS. 



B« {Xnri/rnfferr.) Bill cylindrical, srarroly or not at all higher than 

 Itroad; its tij) dcprt'ssrd. Size small (i. e. less tiian 1.') inches long). Color 

 nnitbrin Miie or with rushy on body, and black wings and tail. 



Color ashv, with wings ami tail niainlv black. Culnien convex, 

 gonys slightly concave. Nostrils covered by the short na.sal tuft . Picicorvus. 



Color unifonn blue, brighter on the head; the throat streaked with 

 whitish. Ciilinen straight; gonys slightly convex. Nostrils eoniplelely 

 exposed; no nasal tails Gymnokitta, 



Genus CORVUSi LiNNiUUs. 



Corvus, LiNN.Et's, Syst. Nat. 1735. (Tyi)o, Corvus corajr, L.) 



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

 Mil. Nostrils large, circular, overlnuig behind by membrane, the edges rounded else- 

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



Grrrvs ettmivtims» 



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

 the tip of the tail, the outer four primaries sinuated internally. Tarsi longer than the 

 middle toe, with a series of small scales on the middle of e.ich side separating the anterior 

 scutellate portion from the posterior continuous plates. Sides of the head occasionally 

 with nearly naked patches. Tail gra<luated or rounded. 



