224 FIELD MUSEUM OF NATURAL HISTORY ORNITHOLOGY, VOL. I. 



extending to the lower mandible, is also very variable, being clearly 

 marked in some and absent in others; one specimen has green on one 

 side and yellow on the other. The amount of scarlet red on the cubital 

 edge of the wing is also variable, and to further complicate matters 

 I cannot separate Blanquilla specimens from those from Margarita, 

 where it is claimed A. ochroptera occurs. All of the specimens from 

 Blanquilla and Margarita have the forehead whitish, shading into 

 bright yellow on the crown and having the concealed basal portion 

 of the feathers salmon-red. Two specimens have a few scattered 

 bluish feathers mixed with the yellowish white on the forehead. 



Compared with the few specimens of supposed ochroptera from 

 Aruba and the mainland, which I have examined, the Blanquilla 

 and Margarita birds differ sufficiently to entitle them to at least sub- 

 specific recognition, but all these differences may be due to age, a 

 matter that can only be decided by comparison with a good series of 

 ochroptera in various stages of plumage. Furthermore, should the 

 characters given rothschildi prove constant and the Bonaire bird 

 never assume the yellow throac, etc., the Blanquilla and Margarita 

 birds (assuming that they prove different from ochroptera) will require 

 a new name; but for the present, at least, and until sufficient material 

 is available to definitely settle the matter, it would seem best to as- 

 sume that the Bonaire bird does occasionally assume a yellow throat 

 and is not separable from birds from Blanquilla and Margarita. 



Mr. Ferry writes: "These birds were common in a grove on the 

 westerly end of Blanquilla, and according to the natives it is found 

 on no other part of the island." 



Family Alcecliiiiclse. 



Ceryle alcyon (Linn.). 



Recorded by Mr. Lowe (Ibis, 1909, p. 317). It was not observed 

 by Mr. Ferry. 



Family Trochilidae. 



Chrysolampis mosquitus (Linn.). 



2 specimens, i $ , i ? 



Doleromya pallida Richmond. 



4 specimens, 3 d\ i ? 



Cannot be distinguished from specimens from Margarita. 



