358 BIRDS OF BIJITISH GUIAXA. 



232. Chordeiles acutipennis.. 



South American Night-Hawk. 



Capi'iinulgns acutipennis Bodd. Tabl. PL Enl. p. 46, 1783 (Gvnana). 

 Cho)'(leiI('s acutipennis Hai"tert, Cat. B. Brit. Mus. jxvi. p. 614, 1892 



(Quonga, Aunai) ; Brabourne & Cliubl), B. S. Anier. i. p. 98, no. 928, 



1912. 

 ChorJeiles acutipennis acutipennis Oberholser, Bull. U.S. Nat. Mus. 



86, p. 94, 1914 (Quonga and Annai, British Guiana). 



Adult male. General colour above blackish brown mottled -with 

 bufFy-Avliite and buff margins to many of the feathers^ the light 

 portions assuming the form of spots on the wings; the first, second, 

 third, and fourth primary-quills barred with white, the fifth incom- 

 ])letelj barred ; a subterminal bar of white on the outer tail- 

 feathers ; a large V-shape patch of white on the throat, sides of 

 face black spotted with buff, lower throat black with rufous bro" n 

 spots, the breast mottled with grey ; remainder of under surface 

 ochreous buff barred with brown, including the axillaries, under 

 wing-coverts, and under tail-coverts ; edge of wing buffy-white. 



Total length 193 mm., culnien 7, wing 170, tail 91, tarsus 14. 



The male from which the description is taken was collected on 

 the Ituiibisi River. 



Adult female. Differs from the adult male chiefly by the absence 

 of the subterminal white bar on the tail. Wing-measurements of 

 two specimens 156 and 165 mm. 



Breeding-season. Unknown in Briti.sh Guiana. 



JS^est. Unrecorded in British Guiana. 



Eggs. Undescribed from British Guiana. 



Range in British Guiana. Upper Takutu Mountains, Ituribisi 

 Biver {McConnell collection) ; Annai, Quonga (Whitel;/). 



Extralimital Range. Brazil, Peru, Ecuador, Colombia, Venezuela, 

 Tobago. 



J-Jabits. Unrecorded in British Guiana. 



Genus NANNOCHORDEILES Hartert. 



Kannocliordeiles Hartert, Ibis, 1896, p. 874. Tvpe N. pusilla 

 (Gould). 



This genus is distinguished by having the first three primaries 

 about equal in length, the scapulars reaching to at least two- 

 thirds the length of the wing, and the tarsus being unfeathered. 



