BIRDS OF NORTH AND MIDDLE AMERICA. 



28 



AduU male.— Length (skins), 148-155.5 (151.5); wing, 83-94.5 

 (87.2); exposed culmen, 14.5-15.5 (15); tarsus, 31-34 (32); middle 

 toe, 17.5-19 (17.9).« 



Adult female. — Length (skin), 144; wing, 82.5; tail, 55.2; exposed 

 culmen, 15; tarsus, 31; middle toe, n.** 



Young. — A specimen retaining only a portion of the first plumage 

 has the scapulars and a few of the interscapulars marked with broad 

 guttate or fusiform mesial streaks of light russet or dull tawny- 

 ochraceous, and most of the feathers of the chest have a large ovate 

 central spot of buff, margined with olive. 



The series of specimens of this species at my command is much too 

 small to admit of any clear understanding of the extent of individual 

 and geographical variation, especially the latter; but I believe that 

 there are three forms, represented, respectively, by the birds of south- 

 ern Mexico, Guatemala, and Costa Rica. Unfortunately I have only 

 one each from the two first-named localities and five from the last. 

 The Mexican (Jalapa) and Guatemalan specimens agree, and differ 

 from all the Costa Rican specimens, in having the bill wholty yellow- 

 ish, the Costa Rican ones having the maxilla black with yellowish 

 tomia; but the Guatemalan specimen, although sexed as a male, is 

 much smaller than the one from Jalapa, has the upper parts much 

 browner (bister or sepia instead of olive) , and the tail almost mummy 

 brown. The Costa Rican specimens are small, like the Guatemalan 

 example, but besides differing in the blackish maxilla, are deep browm- 

 ish olive above (about intermediate m color between the Jalapa and 

 Guatemalan specimens), and have the chest, sides, and flanks mostly 

 gray, instead of olive. Measurements are as follows: 



Collector's notes on fresh colors of the soft parts of the Costa Rican specimens are as 

 follows: "Iris, dark hazel; eyelids, orange; upper mandible, l)lack, broad edges, and 

 lower mandible bright reddish orange; feet, straw"' (feet noted as yellow in one speci- 

 men). 



" Six specimens. 



b One specimen, fi-om Costa Rica. 



