112 



Zoologica: N. Y. Zoological Society. 



[I; 3 



Groups Absent from New York. 



Orinoco. 



Tinamiformes 4 



Opisthocomif ormes 1 



Gruiformes 3 



Palamedeif ormes 1 



Pelecaniformes 2 



Cathartidiformes 4 



Psittaciformes 19 



Trogonif ormes 2 



Motmotidae 2 



Rhamphastidae 9 



Capitones 2 



Galbula and Buccos 12 



Conopophagidae 1 



Formacariidae 44 



Dendrocolaptidae 27 



Cotingidae 14 



Pipridae 9 



Coerebidae 10 



Groups Absent from Orinoco. 



• New York. 



Podicipedidiformes 2 



Colymbiformes 1 



Ampelidae 1 



Laniidae 2 



Paridae 3 



Sittidae 2 



Certhiidae 1 



Alaudidae 1 



It is interesting to note in the case of certain groups of 

 birds peculiar to one region that they are represented in the 

 other region by groups parallehng them in function, thus sup- 

 plying the gap left by their absence. 



We noted the following examples of this, as apparent even 

 in our brief review of the field : 



