JAN. 1917. NOTES ON SOUTH AMERICAN BIRDS CORY. 5 



that Hellmayr has seen specimens from "Bahia" which agree with 

 Spix's type in the absence of white on three outer primaries, it would 

 seem logical to assume that it came from a region still farther south, 

 possibly from the vicinity of Ouro Preto in southern Minas Geraes 

 (where Spix stayed for about two months from the last of February 

 until May, 1818) or from the region of Rio de Janeiro (Spix, July to 

 December, 1817) or Ypanema or S. Paulo (Spix, January, 1818). 



Four outer primaries of: 



I. Nyctipolus hirundinaceus hirundinaceus (Spix), from drawing and descrip- 

 tion of Spix's type given by Hellmayr (I.e.). 



a. Nyclipolus h. crissalis (Cory). Shafts of feathers in white areas black. 

 3. Nyctipolus h. cearac Cory. Shafts of feathers in white areas white. 



Setopagis (Caprimulgus) parvulus (Gould) may be distinguished at 

 a glance from any of the forms of S. hirundinaceus by its darker plumage 

 and the conspicuous black and white (sometimes black and buff) 

 scapulars (see Hellmayr, i.e., Tab. 2). The pattern of the white 

 markings on the primaries approaches nearest to that of 5. h. crissalis 

 but in parvulus these areas are much larger and two specimens from 

 Matto Grosso (c? and 9 ) have two buff spots on the inner web of the 

 outer primary instead of one white one. In addition to other characters 

 males of 5. parvulus have a patch of white on the ends of four outer 

 tail feathers instead of on only the two outer feathers as in N. hirun- 

 dinaceus (see Hellmayr, i.e., p. 637, illustrations). 



Although genetically distinct from Chordeiles acutipennis, N. 

 hirundinaceus has a superficial resemblance to that species, but in 

 addition to many other differences the conspicuously longer wing 

 (wing of C. acutipennis averaging 35 mm. longer than that of N. hirun- 

 dinaceus) will distinguish it at a glance. 



