64 CLASS AVES. 



Ambergris Swallow. Hir. ambrosiaca. Gm. Briss. 

 ii. 45. 



Gray brown, beneath paler ; tail much furcated. 



Brazilian Swallow. Hir. tapera. Lin. Hir. 

 Americana. Briss. ii. 45. — 3. 



Brown, beneath grayish ; belly white ; tail slightly 

 forked. Brazil. 



Black Swallow. Hir. nigra. Gm. Briss. ii. 46. f. 3. 



Black; wings very long. Cayenne. Sometimes 

 found with a white frontal band. 



Daurian Swallow. Hir. Daurica. Lin. Hir. 

 Alpestris. Pall. 



Blue ; beneath white ; temples and rump ferruginous ; 

 outer tail feathers very long, with a white spot on the 

 inner edge. Siberia. 



Hir. ryfifrons. Vieil. Vail. O. A. 245. 



Bluish black, belly white, forehead red, bill and feet 

 black. South Africa. 



Hir. paludicola. Vieil. Vail. A. O. 246. 2. 

 Ash brown ; beneath paler ; tail short. South Africa. 



Hir. cristata. Vieil. Vail. O. A. 247- — 1- 



Pale gray, beneath ashy white ; crested. South 

 Africa. 



Hir. fuscata. PI. Col. 161. 



Brown, beneath white ; head, neck and breast rufous ; 

 tail very slightly forked. Brazil. 



