6. CH^TUKA. 477 



Hemiprocne collaris, Nitzsch, Pterylogr. p. 123 (1840). 



Pallene collaris, Boie, Ms, 1844, p. 168. 



Hemiprocne torquata, Streubel, Isis, 1848, p. 362. 



Acanthylis collaris, Bp. Comp. i. p. 64 (18-50) ; Bunn. Syst. Uebers. 



Th. Bras. ii. p. 364 (1856) ; id. La Plata Reise, ii. p. 449 (1861). 

 Acanthylis albicollis, 8cl. P. Z. S. 1854, p. 10 ; Scl. 6) Salvia, Ibis, 



18-59, p. 125, 1860, p. 37 (Guatemala). 

 Hemiprocne zonaris, Cab. S) Heine, Mus. Hein. iii. p. 84 (1860) ; Scl. 



S)- Sale. Nomencl. Ai\ Keotrop. p. 95 (1873) ; Pelz. Ibis, 1875, 



p. 330 ; Boucard, P. Z. S. 1878, p. 67 (Irazu) ; Scl. ^- Salo. 



P. Z. S. 1879, p. 531 (Antioquia), p. 626 (Bolivia) ; Sumichi: 



Nattiraleza, v. p. 250 (Mexico) (1882) ; Scl. B. Argentine, ii. p. 11 



(1889). 

 ChiBtura zonaris, Scl. Cat. Am. B. p. 282 (1862) ; id. P. Z. S. 186-3, 



p. 99, 1865, p. 609; id. J. f. 0. 1867, p. 131 ; Scl. ^- Salrin, P. Z. S. 



1867, p. 752, 1873, p. 289 (E. Peru) ; Pelz. Orn. Bras. p. 15 



(1867) ; Gray, Hayid-l. i. p. 64 (1869) ; Sahin, Cat. StricM. Coll. 



p. 372 (1882); Bedd. Ibis, 1885, p. 20; Salviji, Ibis, 1885, 



p. 436. 

 Heoiiprogne zonaris, Tacz. Orn. Perou, i. p. 231 (1884). 



b. Referring to sjiecimens from the West Indies. 



Cypselus collaris, Albrecht, J.f. O. 1861, p. 206 (Cuba). 



Acanthvlis collaris, Gosse, B. Jamaica, p. 51 (1847). 



Chffitura zonaris, Scl. P. Z. S. 1861, p. 77 (Jamaica) ; Albrecht, 



J.f. O. 1862, p. 201. 

 Kephocpetes collaris, Gundl. J. f. O. 1862, p. 177, 1874, p. 114; id. 



Contr. Orn. Cuba, p. 83 (1876). 

 Acantliyllis zonaris, A. Sf E. Newton, Handb. Ja^naica, p. 108 



(1881). 

 Hemiprocne zonaris, Cory, List B. W. Ind. i. p. 17 (1885) ; Wells, 



Proe. U. S. Mus. ix. p. 620 (1886) (Grenada) ; Cory, B. W. Lid. 



p. 141 (1889). 



Adult. All over blackish browu with a slight metallic gloss ; a 

 broad collar round the neck and breast -white. Total length about 

 9 inches, wing 8-5 to 8-8, tail 3, tarsus 1-9. 



Younger birds have the collar, especially on the breast, only 

 indicated or mixed with black. Nestlings have probably no collar 

 at all. Very young birds have also whitish edges to the feathers of 

 the lower parts. 



llab. Brazil, Bolivia, Peru, Ecuador, extending northwards to 

 Veragua, Guatemala, and Mexico. In the West Indies it is 

 recorded from the islands of Jamaica, Cuba, San Domingo, and 

 Grenada. 



Specimens from Guatemala and Mexico seem to be a little 

 smaller on an average, but cannot be separated from the true 

 C. zonaris. They do not belong to the small form from Boraima. 



Seven specimens from Jamaica and San Domingo have a very 

 perceptible brownish-grey forehead and a short and narrow whitish 

 stripe over the fore part of the eye. These may be only seasonal 

 features, as I have not a quite freshly moulted specimen before me, 



