30. XANIHUKA. 129 



b". Underneath yellow, washed with green on 

 the sides of the body ; under tail-coverts 

 bright yellow ; frontal crest-plumes short, 



not exceeding 0-3 inch in length cyanucajnlla, p. 131. 



c". Underneath greenish, including the under 



tail-coverts huruusa, p. 132. 



b. Outer tail-feathers bhie above, black beneath. 

 c'. Throat black. 

 d". Belly black. 



a'". Frontal plumes forming a thin elon- 

 gated black crest* sanblasiana, p. 182. 



b'". Frontal plumes short, erect, but not 

 forming a crest. 

 aK Larger : back bright blue ; nostrils 

 entirely covered by the frontal 



plumes beecheii, p. 133. 



b*. Smaller : back greenish blue ; nostrils 



half-covered by the frontal plumes. . ytwatanica, p. 133. 



e". Belly blue melanoci/anea, p. 134. 



d'. Throat blue, encircled by a white necklace 

 across the fore neck. 

 /". Crown blue, with a narrow band of white 



behind the black forehead viridicyanea, p. 134. 



g'. Crown white julyaa, p. 135. 



«'. Throat blue, encircled by a black necklace. 

 h''. Lower back, rump, tail, and wings green- 

 ish cobalt, 

 c'". Fore part of crown silvery whitish ; 



throat silvery or turquoise-blue turcosa, p. 135. 



d'". Fore part of crown rich cobalt, like 



the rest of the head ; throat rich cobalt qiiindiuna, p. 135. 



i". Lower back, rump, wings, and tail deep 



cobalt. 



e"'. Purplish above, the head only slightly 



lighter ; throat-patch very little lighter 



than the under surface, which is deep 



pui'ple meridana, p. 136. 



f". Deep rich cobalt-blue above and 

 below ; the throat-patch brighter co- 

 balt, and the head inclining to silvery 

 blue armUlatu. p. 136. 



1. Xanthura yncas. 



Geai du P.5rou. Montb. PL Enl. iii. pi. 625. 



Peruvian Jay, Lnth. Gen. Si/n. i. pt. 1, p. 3'Jl. 



Corvus yncas, Budd. Tail. VI. Enl. p. 3t! (ex Muntb.). 



Corvus peruvianus, Gm. !S. X. i. p. 373 (ex Lath.). 



Le Geai Pdruvien, Levaill. Ois. Farad, pi. 44. 



Pica chloronota, Wuylcr, Syst. Av. Pica, sp. 12. 



Pica luteola. Less. Traite, p. 331. 



Garrulus peruvianus, Lafr. ^- JD'Orb. Syn. Av. p. 9. 



Cyanocorax peruvianus, Cab. in IWhudfs Faun. Perttan. p. 36. 



* The charncters of these three birds are copied from Messrs. f«'clater and 

 Salvin's paper [1. >\). 



