I [() SINGING BIRDS — OSCLNES. 



Cotyle riparia, Linn^us. 



THE BANK SWALLOW. 



Hinmdo ripurui, Linn.«us, Syst. Nat. I. 1766, 344. — Wilson, Am. Orn. V. 46; pi. 

 xxxviii. — Audubon, Orn. Biog. IV. 1838, 584 ; pi. 385. Ib. Biids Amer. I. 1840, 187 ; 

 [j1. fill. — Colijlc riparia, BoiK, Isis, 1822, 550. — Brewer, N. Am. Ool. I. 1857, 105; 

 |,1. iv. f. 49 (Egj,'). — B.viRD, P. R. Re]). IX. Birds 313. 



Sp. Ciiau. Smallest of Amurican swallows. Tail slightly emargiuate. Outer web 

 of first primary soft, without hooks. Lower part of the tarsus with a few scattered 

 feathers. Above, grayish-browu, somewhat fuliginous, with a teudeney to paler margins 



^ 



to the feathers. Beneath, pure white, with a band across the breast and sides of the body 

 like the back. Length, 4.75 ; wing, 4.00 ; tail, 2.00. 

 Hah. North America generally. 



This ajjecies has been obtaiued at Sacramento by Dr. Heermann, accord- 

 ing to Baird, but as it seems rather less common on this coast than the next, 

 and resembles that so closely that they cannot be distinguished "without 

 examination of specimens, their habits being exactly alike, I will describe 

 those of both under one heading. It lays white eggs like that species. 



Tlie bank swallow is the only species belie^-ed to be common to both 

 Europe and America, a careful comparison showing no tangible or i)erma- 

 nent difl'ereiice. The barii swallows of the two hemispheres are closely 

 related, but always distinguishable l.iy the rufous belly and narrow pectoral 

 band of the American variety. 



Cotyle serripennis, Audubon. 



THE EOTJGH- WINGED SWALLOW. 



niruiuh serripennis, Audubon, Orn, Biog. IV. 1838, 593. — In. Birds Amer. I. 1840, 193; 

 pi. 51. — Coti/le serripennis, Bon.\1'ARTE, Consp. IS-iO, 342. — Brewer, X. Am. Ool. I. 

 1857, 106; pi. iv. f. 50 (Egg). — B.\ird, P. R. Rep. IX. Birds, 313. — Kennerly, X. iv. 

 24. — Heermann, X. vi. 36. — Cooper and Suckley, XII. iii. Zool. of W. T. 186. 



Sp. Ch.\r. Tail slightly emarginate ; first primary with the pennulie of the outer web 

 much stiffened, with tlieh' tree extremities recurved into a hook, very appreciable to the 



