148 



through the intervening country remains to be ascertained. It is 

 not improbable that it is a more common species on the Pacific 

 coast, and that it is of rare and accidental occurrence in the east- 

 ern part of the continent. Dr. lieermann has ascertained that 

 this hawk rears its young in California, where he met with both 

 adult and young specimens. 



The egg supposed to be that of this hawk, measures 2y*^ inches 

 in length by ly*^ in breadth. Its shape is an oblong oval, and 

 neither end is perceptibly larger than the other. The ground 

 color of the egg is a cream- white, but little obscured by markings 

 or secondary colors. The egg is marked, chiefly at one end, with 

 lines, dottings, and small blotches of a light reddish-brown. The 

 lines with which one end of the egg is sparingly marbled are 

 much darker, and are more nearly of a Vandyke-brown. The 

 greater portion of the egg, especially that which corresponds with 

 the smaller end, is free from any markings. This has no close 

 resemblance to the egg of any other American hawk that I have 

 ever met with, but most nearly approaches that of the Rough- 

 legged Falcon from Labrador. 



Hirundo bicolor. White-bellied Swallow. 

 Hirundo lunifrons. Republican or Cliff-Swallow. 



Mellisuga anna. Anna Humming-Bird. Two nests with the 

 eggs of this bird were obtained by Mr. Samuels. They are not 

 new, bat are probably to be found in few collections. The nest 

 and eggs procured by Mr. S. correspond substantially with the 

 descriptions and measurements given by Mr. Nuttall and quoted 

 by Mr. Audubon. (Birds of America, Vol. X. p. 188.) 



Tyrannus verticalis. Arkansas Flycatcher. 



Scolecophacfus Mexicanus. Brewer's Blackbird, Audubon. 

 This bird was first met with in the territory of the United 

 States by Mr. Audubon, who found it in the country about Fort 

 Union, near the confluence of the Yellow Stone and the Missouri. 

 He called it, supposing it to be undescribed, Quiscalus Brewerii. 

 It had, however, been previously given by Mr. Swainson as 

 Mexicanus. Mr. Samuels was so fortunate as to meet with seve- 

 ral of the nests, with the eggs of this bird. The egg measures 



