372 BIRDS OF BUITISH GUIANA. 



C\fBtnrn hraclnpira Brabounie & Chubb, B. S. Amer. i. p. 102, no. 971, 

 1912. 



Adult male. Head, upper Ijack and wings, brpa>t and abdomen, 

 glossy black ; lower bacdc, rump, upper and under tail-coverts 

 ash-grey, tail somewhat darker with spine-like shafts which 

 protrutle beyond the webs. 



Total length 9.5 mm., culmen .5, wing 116, tail 29, tarsus 10. 



The male from which the description is taken was collected 

 on the Abary Kiver in Xovember 1906. 



Adult female. Similar to the adult male, but rather larger. 

 Wing 122 mm. 



Breeding-season. Unl^nown in British Guiana. 



Xest. Unrecorded in British Guiana. 



J'^'jos. Undescribed from British Guiana. 



lianfje in British Guiana. Abary River (McConnell collection): 

 Annai ( Whitely). 



Extralimital Range. Tobago, Trinidad, North Brazil, Venezuela, 

 East Peru. 



Habits. Unrecorded in British Guiana. 



2\?). Chsetura spinicauda. 



Spine-tailed Swift. 



Aranfln/lis spinicauda Boie, Isis, 1S26, p. 971 (Cayenne). 



(Jhatura spinicauda Salvin, Ibis, 1S85, p. 437 (Bartica Grove, Cama- 



cusa); Quelch, Thnehri (2) v. p. 101, 1891 ; Hartert, Cat. B. Brit. 



Mus. xvi. p. 488, 1892 ; Beebe, Our Search for a Wilderness, 



pp. 289, 292, 1910 fAremu River); Brabourne & Chubb, B. S. 



Aiiier. i. p. 103, no. 975, 1912. 



"Spiny-tailed Swift" {Quelch). 



Adult male. Head, back, wings, and tail glossy ]>lack ; sides of 

 7ieck, breast, and abdonien sooty-brown, darker on the under tail- 

 coverts and wing-coverts ; throat and rmnp ashv-white. 



Total length 114 mtn., culmen 3, wing 101, tail 39, tarsus 10. 



We do not know the exact locality, in the Colon v, of the male 

 from which the description is taken. 



Adult female. Like the adult male, but rather lar<rer. Win"- 

 106 mm. 



The description of the female is taken from a specimen in the 

 Britisii Museum collected by Whitely at Kamakusa in October 

 ISSl — Salvin-Godnum collection. 



