178 CLASS AVES. 



» 



Clark's Crow. Corvus Columhianus. Wils. Amer. 

 Orn. iii. pi. 20. f. 2. 



General colour above, light silky drab ; breast and 

 belly, dove-colour ; vent, white. Banks of Columbia 

 river. 



Corvus Nasicus. Temm. PI. Col. 413. 



Beak, very bulky, much dilated at the edges of the 

 upper mandible, and strongly curved ; nostrils, naked ; 

 all the plumage black, but not lustrous. Island of 

 Cuba. 



Fish Crou\ Corvus Ossifragus. Wils. Amer. Om. 

 v. 37. 2. 



Plumage, wholly black, with reflexions of steel-blue 

 and purple. N. America. M. Cuvier seems to doubt 

 its diff*erence from our common crow.* 



The Pies. (Pica. Cuv.) 



Less than the crows ; have also the upper mandible 

 more arched than theirs, and the tail long and 

 cuneiform. 



• M. Temminck has the following additional species in his genus Corbeau, 



pi. Col. 70''''"^ Livraison 



Corvm Montanus. Vail. 51. as above noticed. 



Corvus LeucophcBus. Vieil. Gal. 100. SoreaUs of Brisson. 



Corvjis Segetum. Vail. O. A. 52., above mentioned. 



Corvus Australis. Lath. Ind. Sp. 2. 



Corvus Enca. Horsf. Cat. Java. 



Also from others, — 

 Corvtis^ Mexicanus. Lath. Vieil. 

 Corvus Clericus. Lath. Vieil. 

 g Corvus Versicolor. Lath. Vieil. 

 Corvus Spermologus. Frisch. Vieil. Var. of CorVui monedula. Lath. 



