WHITE-HEADED DOVE. 315 



coverts, primary quills, and outer secondaries brownish-black, very narrowly 

 margined with brownish-white. Tail greyish-blue at the base, much paler 

 and tinged with yellow toward the end, these colours being separated at the 

 distance of two inches from the tip by a band of black. 



Length to end of tail 16 inches, to end of wings 13f; wing from flexure 

 9; tail 6g; bill along the ridge |f, along the edge of lower mandible 1-^-; 

 tarsus 1 T V; hind toe T \, its claw -£|; middle toe Iff, its claw -fe. 



Adult Female. 



The female differs from the male only in having the tints a little duller, 

 and on the upper parts somewhat darker, with the black band on the tail less 

 decided, the middle feathers being but faintly marked with it. 



Length to end of tail 15|- inches. 



Nuttall's Dog-wood. 



CORNUS NOTTALLI, Audubon. 



This very beautiful tree, which was discovered by Mr. Nuttall on the 

 Columbia river, attains a height of fifty feet or more, and is characterized by 

 its smooth reddish-brown bark; large, ovate, acuminate leaves, and con- 

 spicuous flowers, with six obovate, acute, involucral bracteas, which are rose- 

 coloured at the base, white towards the end, veined and reticulated with 

 light purple. The berries are oblong, and of a bright carmine. 



WHITE-HEADED DOVE, OR PIGEON. 



^"COLUMBA LEUCOCEPHALA, Linn. 



PLATE CCLXXX.— Male and Female. 



The White-headed Pigeon arrives on the Southern Keys of the Floridas, 

 from the Island of Cuba, about the 20th of April, sometimes not until the 

 1st of May, for the purpose of residing there for a season, and rearing its 

 young. On the 30th of April, I shot several immediately after their arrival 

 from across the Gulf Stream. I saw them as they approached the shore, 



