84 



their belonging to the same species, and I was eventually induced 

 rather to refer the Panama bird to Lafresnaye's Aylaia fanny. This 

 latter species was one of the many novelties discovered by the well- 

 known French traveller and collector, the late M. Delattre, and was 

 described by theBaronF. deLafresnaye, in the ' Revue Zoologi que' for 

 1847, and afterwards figured in Des Murs' ' Iconographie Ornitholo-. 

 gique.' I had always previously considered it as identical with Calliste 

 larvata ; and indeed, without having the two birds together in one's 

 hands, it is not very easy to point out the differences satisfactorily. 



It may however be remarked that this Calliste is slightly smaller 

 than C. larvata, and has the head of a much lighter golden green, in 

 some lights passing almost into pale green. In the other bird, these 

 parts are more of a coppery brown. In this species also, the lower 

 back and edgings of the middle and greater wing-coverts are of a much 

 greener tinge, and there is more white in the middle of the belly and 

 crissum. 



M. Delattre's specimen is said to be from New Grenada, and was 

 probably procured southwards of the Isthmus. Mr. Bridges shot his 

 example on the tops of some high trees in the vicinity of David, on 

 the banks of the river of the same name. The former bird is now in 

 the Museum of the Academy of Natural Sciences of Philadelphia, 

 where I had the pleasure of inspecting it last autumn, the latter in 

 Mr. Gould's collection. These are, I believe, the only two examples 

 as yet procured of this Tanager. 



I have thought it right slightly to modify the designation of this 

 Calliste, calling it " francesccB " instead of "fanny," as the latter 

 appellation is neither Latin nor like Latin, the language in which 

 all scientific nomenclature ought to be written. 



