BIRDS. 



97 



This species is common at the Falkland Islands, and it often occurs mingled 

 in the same flock with the last one. I suspect, however, it more commonly 

 frequents higher parts of the hills. These species have a very close general 

 resemblance ; but the marks about the head, which are white in the C. melanodera, 

 are yellow in the C. xanthogramma, while the parts of the tail-feathers which are 

 white in the latter, are yellow in the C. melanodera : this difference of colours 

 does not hold in the females, but they may be at once distinguished by the 

 greater length of wing, when folded, of the C. xanthogramma. 



Chrysomitris Magellanica. Bonap. 



Fringilla Magellanica, Vieill. Ency. Meth. 983 ; Ois. Chant, de la Zone Torride, pi. 30 ; 



Audubon, Birds of Am. pi. 394, f. 2. 

 Gafarron, Azara, No. 134. 

 Fringilla icterica, Licht. Cat. p. 26. 



This bird was very abundant in large flocks during May, at Maldonado ; 

 I found it also at the Rio Negro. 



Sub-Family.— TANAGRINiE. 



PlTYLUS SUPERCILIARIS. 



Tanagra superciliaris, Spix. Av. Sp. Nov. 2. t. lvii. fig. 1. p. 44. 



My specimen was procured from Santa F6, in Lat. 31° S. 



1. Aglaia striata. D'Orb. 8f Lafr. 

 Plate XXXIV. 

 $ Tanagra striata, Gmel. Syst. 1. 899 ; Ency. Meth. 776 ; Licht. Cat. p. 31. Sp. 347 ; 

 Proc. Zool. Soc. 1837, p. 121, pi. 34 of this work. 

 L'Onglet, Buff. iv. p. 256. 

 Le Lindobleu, dore et noir, Azara, No. 94. 

 $ Tanagra Darwinii, Bonap. ; Proc. Zool. Soc. 1837, p. 121. 



I saw the only specimen, which I procured, feeding on the fruit of an opuntia 

 at Maldonado. 



Mr. G. R. Gray is induced to consider the species figured under the name 

 of T. Darwinii, as the T. striata, Gm. and the T. Darwinii of the Zoological 

 Society's Proceedings, as the female of the same species, while the young birds 

 may be described as following : 

 Brown, with the margins of the dorsal feathers greenish-brown, those of the 



wings and tail margined brownish-white ; head and neck greyish-green ; 



o 



