66 



seem to be fair and reasonable grounds for so doing. In the present 

 instance I must admit I am stretching my complaisance to nearly its 

 limits. There is certainly but a barely sufficient amount of difference 

 between this bird and the latter to warrant our considering them as 

 distinct. But as the present Tanager has been considered a valid 

 species by Prince Bonaparte, I have thought it best to retain it so, 

 though I cannot employ for it the old specific title mexicana, as he 

 has proposed ; for, in the first place, the bird has nothing to do with 

 Mexico, and secondly, if the name mexicana were employed at all, it 

 should be used for the Cayenne bird, Linnaeus' s T. mexicana having 

 been founded principally on Brisson's "Tangara cayennensis ccerulea" 



I have therefore called it after Vieillot's name, that indefatigable 

 writer having remarked upon its existence in the ' Encyclopedie Me- 

 thodique' as long ago as 1820, though he "did not confer on it a 

 distinct specific appellation. 



Vieillot'sTurquoise Tanager is common in collections from Trinidad, 

 and may be recognized by its bright yellow belly and under wing- 

 coverts, which in C. Jlaviventris are creamy white tinged with yellow. 

 I have not noticed its occurrence from other localities. 



