4S4 CYl'SELIDiE. 



this tho lower surface, except the whitish chin and throat, is darker 

 and more nniform than in C. sjnnicauda. Total length about 4:"5 

 inches, wing 4-2 to 4-4, tail 1*65. 



Nearly as dark on the underparts as C. sclateri, from which it is 

 easily disting\iishcd by the colour of its rump. 



Hub. Veragua and northern parts of Colombia. Two birds from 

 Para and one from Santarem on the Amazon belong also to this 

 species and not to 0. sjnnicauda, as we should expect. 



«. J ; 6. Ad. sk. Bugaba, Chiriqui (Arce). Salvin-Godman Coll. 



(Types of the species.) 

 c, (I. (S ad. sk. Chiriqui, Veragua (Arce). Sclater Coll. 



e. Ad. sk. Santarem, Amazon ( Wicli- Sclater Coll. 



ham). 



f. 6; !/■ 2 ad. Fiii-ajK ov. {U. L. Lai/ard). Tweeddale Coll. 

 sk. 



h. c? ad. sk. Para, Sept. 1 (U. L. Layard). Sharpe Coll. 



15. Chaetura poliura. 



Hirondelle brune acutipenne de la Louisiane, Biiff. JECist. Nat. Ois. 



vi. p. 699 (1770). 

 Hirondelle a queue pointue de la Louisiane, Daubeyit. PL J2nl. 726. 



fig. 2 (1783). 

 Cjpselus poliurus, Temm. Tall. Mcth. p. 78 (1S39). 

 Acauthylis brachyura, Jard. Ann. ^- Mag. N. H. 1846, p. 120. 

 Acanthylis poliourus, Bix C'otisp. i. p. 64 (1850) ; Leot. Ois. Trinidad, 



p. 86''(1866). 

 Chajtm-a poliura, Scl. Cat. Am. B. p. 283 (1862) ; id. P. Z. S. 1863, 



p. 101, 18G5, p. 611, 1870, p. 329 ; id. J. f. 0. 1867, p. 133 ; Pelz. 



Orn. Bras. p. 10 (1807) ; Grai/, Hand-l. i. p. 06 (1869) ; Fin.sch, 



P. Z. S. 1870, p. 558 (Trinidad) ; Layard, Ibis, 1873, p. 389; Scl. Sf 



Salv. P. Z. S. 1873, p. 289 (E. Peril) ; Lam: A?m. iV. Y. Ac. Sc. 



i. p. 255 (1878) ; Tacz. Orn. Perou, i. p. 229 (1884) ; Cory, Ibis, 



1880, p. 473 (St. Vincent). 

 Chcetura brachycerca, Scl. ^- Salv. P. Z. S. 1867, p. 758, pi. xxxiv. ; 



Scl. P. Z. S. 1870, p. 329. 

 Chretura brachyura, Cory, B. W. Ind. p. 294 (St. Vincent and 



Grenada). 



Adidt. Forehead, crown, nape, back, sides of the head and neck, 

 chin, throat, breast, and abdomen black with metallic gloss ; wing 

 black with stronger steel-blue gloss ; rump and upper tail-coverts, 

 tail, vent, and under tail-coverts cinereous grey with a brownish 

 tinge, rectrices with black shafts and spines. Total length about 

 4 inches, wing 4"8, tail 1-3. 



Specimens from South America and the islands arc perfectly 

 similar. 



Hah. From the Upper Amazons in Peru and Ecuador to Para 

 in Brazil ; Guiana and the islands of Trinidad, Tobago, Grenada, 

 and St. A'incent in the AVest Indies. AVill probably be found in 

 Venezuela. 



