632 Mr. Charles Chubb on the 



Cyanocompsa ci/anea Ihering, Revista Mus. Paulista, vi. 

 p. 321 (Paraguay). 



Cyanocompsa sterea Oberholser, Proc. U.S. Nat. Mus. 

 xxv. p. 146 (1902: Sapucay). 



a. ? ad. Sapucay, May 30, 1903. 



b. ? ad. „ June 26, 1904. 



c. d, e. <J ad. et imm. ; /, g. ? ad. Sapucay, July 1904. 

 h, i. <$ ad. et imm. Sapucay, August 1901. 



Having compared this series with more than forty other 

 individuals of Guiraca cyanea in the British Museum, I 

 find the specimens to be identical. There appears to be no 

 evidence, therefore, to support the validity of Cyanocompsa 

 sterea Oberholser. The size of the bill is, without doubt, 

 a variable character in this species, as even two of the 

 immature male specimens from Paraguay shew considerable 

 variation from each other, and there are many instances of 

 this kind in the large collection which I have consulted. 



[The young males of this species do not change to full 

 adult male plumage until the autumnal moult of the second 

 year after birth. That is to say, the birds are some eighteen 

 months old before assuming the full adult plumage. — W. F. | 



212. Guiraca glaucocyerulea. 



Pico grueso azul Azara, Apunt. i. p. 440. no. cxix. (1802). 



Pyrrhula gluucocarulea d'Orb. et Lafr. Syn. Av., Mag. 

 de Zool. 1837, p. 85 (Maldonado) ; d'Orb. Voy. Amer. 

 Merid., Ois. pi. 50. fig. 2. 



Guiraca glaucoceerulea Berlepsch, J. f. O. 1887, p. 115 

 (Paraguay) ; Sharpe, Cat. B. Brit. Mus. xii. p. 75. 



Cyanoloxias glaucocarulea Oberholser, Proc. U.S. Nat. 

 Mus. xxv. p. 146 (1902: Sapucay); Ihering, Revista Mas. 

 Paulista, vi. p. 321 (Paraguay). 



a. J ad. Sapucay, September 28, 1902. 



b. <$ imm. Sapucay, March 26, 1903. 



Bill black, dark slate-coloured below ; feet black ; iris 

 brown. 



c-h. <$ ad. etimm.; i. $ ad. Sapucay, June 1903-04. 

 k, I, m. c? ad. et imm.; n. ? ad. Sapucay, July 1904. 

 o, p. £ ; q. ? ad. Sapucay, August 1904. 

 r. £ ad.; s. S imm. Sapucay, September 1904. 



