1919-] Ecuador, Peru, Bolivia, and Argentina. 35 



Zenaida virgata Bertoni, Aves Nuev. Paraguay, 1901, 

 p. 24. 



No. 343. c? . Sinche Guaranda, Ecuador, 4000 metres, 

 Dee. 1898. Native name " Paloma.'' 



No. 352. S. Riobamba, Ecuador, 2800 metres, Jan. 

 1899. 



Nos. 419, ? ; 420, S • Guallabamba, Ecuador, 3500 metres, 

 Jan. 1899. 



Nos. 598, cJ ; 599, S • Canar, Ecuador, 2600 metres, April 

 1899. 



No. 764. c? • Ona, Guishapa, Ecuador, 2000 metres. 

 May 1899. 



No. 826. S • Loja, Ecuador, 2000 metres, June 1899. 



No. 1091. c?. Catacaos, Peru, 40 metres, Aug. 1899. 



No. 1128. c?. Piura, „ 50 metres, Aug. 1899. 



No. 1443. c?. Caraz, „ 2200 metres, Dec. 1899. 



No. 1663. $ . Chosica, „ 850 metres, Jan. 1900. 



No. 2750. S • Tapacari, Bolivia, 3000 metres, March 

 1901. 



No. 3062. (^ . Sucre, ,, 3000 metres, Sept. 



1901. 



No. 33. Trujillo, N.W. Peru, Marcli 1912. Collected 

 and presented to the British Museum by the late Lord 

 Brabourne. 



The present series of this species has been compared with 

 that in the British Museum, which contains fifty-five speci- 

 mens. There is great variation of plumage throughout the 

 entire series, but none that favours any particular locality. 

 I notice, however, that there is a difference of wing- 

 measurement. The birds from Mexiana, Para, Ceara, 

 Noronha Islands, and Matto G rosso have the wing 132- 

 140 mm., Ecuador and Peru 145-150, Patagonia 150-154, 

 western Argentina 145-152, Tarapaca 141-160, central 

 Ciiile 146-157, and southern Chile 147-154. It will be 

 noticed, therefore, that the eastern Brazil and Noronha 

 Islands birds are the smallest form, and may very well be 

 separated subspecifically as follows : — 



d2 



