ORDER PASSERES. 6l 



Hir. Ludoviciana. Cuv. PI. Eul. 725. Catesby 

 I. F. 57. H. CayanensiSf var. Vieil. H. 

 Cinerea. B. Lash. 



Grayish black. Louisiana. 



Crag or Rock Swallow. Hir. rupestris. H. Mon- 

 tana. Gin. Stor. Deg. IV. 409, young Vail. 

 O. A. 246. 



Pale brown ; beneath whitish, quills and tail blackish ; 

 under edge of tail feathers with an oval white spot. 



Others have the toes naked, the tail forked, and 

 the bifurcatijons often very long. 



Tlie Chimney Swallow. Hirundo rustica. Lin. En. 

 543. 1. 



Black above ; forehead, eyebrows and throat red ; 

 The rest beneath white. Its name is derived from 

 the habitation it usually selects. 



The H. Smithii of Leach, H. corhinca, is like it 

 but smaller. 



T7ie River Swallow. Hirundo riparia. L. Enl. 

 543. 2. 



Brown above, and on the chest ; the throat and 

 beneath white. It lays its eggs in holes by the 

 water-side. It appears well authenticated that it 

 faUs into a lethargic state during the winter, and even 

 that it passes that state at the bottom of marshy 

 waters. 



The type of the genus cotyle of Bore. Also found 

 in America. Wilson, Orn. v. p. 38. fa. Vaillant, 

 O. A. t. 246. f. 2., is also a variety according to Tem- 

 mink. 



