348 APPENDIX. 



whitish on the flanks ;- legs and feet bluish-black. Irides dark 

 hazel. Length 8 inches. 



The female differs from the male, chiefly in the absence of the 

 red occipital band. 



This species, so much resembling the common P. villostis, is 

 abundant in the forests on the Columbia river. Its habits are 

 very similar to those of its near relative. Builds a loose and un- 

 substantial nest, in the hollow of a decayed tree, and lays four 

 white e2:gs. 



Vaux's Chimney Swallow. 



Cypcelus *Vauxl, (Townsend,) Journal Acad. Nat. Sciences, 

 Vol. 8, part I. Female. , 



Bill slender, black ; upper parts of a dull smoke-brown, in- 

 clining to blackish upon the interscapular region ; shoulders and 

 primary quills blackish ; the rump and tail are of a much lighter 

 color than the back, being dull cinereous-brown ; shafts of the 

 tail-feathers, and their points, black ; wings of ordinary length, 

 extending about two inches beyond the tail ; throat, and upper 

 portion of the breast, grayish-white ; belly, and all below, cine- 

 reous-gray. Legs and feet brownish-black. Irides dark hazel. 

 Length 3| inches. Extent of wings 10 inches. It differs from 

 the C pelasgius, with which it has been confounded, in several 

 very striking particulars. It is one inch shorter, and two inches 

 less in extent ; the body is proportionably smaller in every aspect, 

 and the color much lighter. 



This species, (which I dedicate to my friend, Wm. S. Vaux, 

 Esq., of Philadelphia,) is common on the Columbia river; breeds 

 in hollow trees, forming its nest in the same manner as the pelas- 

 gius, and lays four white eggs. 



White-legged Oyster Catcher. 



Hcematopus *Bachmani, (Audubon.) Birds of America, Vol. 

 IV., pi. 427. Male. 



Bill yellow, red at base, and on the superior portion of the 

 upper mandible ; whole head, neck, and throat black ; back, 

 wings, and rump, brownish-fuscous, varied with a darker tint ; 

 tail somewhat rounded, blackish, the feathers edged with lighter; 

 flanks deep black ; belly, vent, and upper tail-coverts, brownish- 



