BIRDS OF NORTH AND MIDDLE AMERICA. 



217 



yellowish olive-green or olive-yellow; under tail-coverts sulphur yel- 

 low, under wing-coverts yellowish white or white, tinged with sul- 

 phur yellow; maxilla dusky brown, with paler tomia; mandible pale 

 grayish brown in dried skins (bluish gray in life?); legs and feet horn 

 color in dried skins. 



Young {Jirst plumage). — Pileum and hindneck vinaceous-drab; back, 

 scapulars, rump, upper tail-coverts, and wing-coverts similar but 

 browner (between cinnamon and Isabella color); under parts white, 

 the sides and flanks tinged with grayish and with traces of yellowish 

 olive; under tail-coverts light olive-yellow; remiges and rectrices as 

 in adults." 



Adah mafe.— Length (skins), 87-104 (96.4); wing, 47-57 (53.1); 

 tail, 31-41.5 (36.9); exposed culmen, 10.5-13 (11); tarsus, 16-17 

 (16.4); middle toe, 8-9 (8.7).* 



Adult female.— h^n^th. (skins), 82-102 (95.6); wing, 47-57 (52.3); 

 tail, 30-40.5 (35.9); exposed culmen, 10.5-12 (11.5); tarsus, 16-17.5 

 (16.7); middle toe, 8-9.5 (8.7).^ 



« The specimen described has partly assumed the adult plumage, but is mainly 

 colored as described above. 

 '' Eighteen specimens. 

 <^ Eleven specimens. 

 Examples from different localities average, respectively, as follows: 



Locality. 



Middle 

 toe. 



MALES. 



Four adult males from Vera Cruz and Oaxaca 

 Three adult males from Tabasco and Chiapas 



Two adult males from Yucatan 



One adult male from northern Honduras 



Two adult males from Nicaragua 



Two adult males from Costa Rica 



One adult male from Chiriqui 



Two adult males from Panama 



FEMALES. 



Four adult females from Tabasco 



One adult female from Yucatan 



Two adult females from Nicaragua 



Two adult females from Chiriqui 



Two adult females from Panama , 



8.7 



9 



8.5 



8.7 



8 



8.7 



8.2 

 8.7 

 9 



As a rule specimens from Nicaragua and southward are decidedly smaller than 

 examples from northern Honduras and northward to southern Mexico, and have 

 the coloration slightly duller, the gray of the pileum and hindneck being less clear 

 and less sharply defined against the olive-green of the back, and occasionally slightly 

 tinged with olive-green. Were it not for the two females from Chiriqui, which 

 are quite as large as the largest of that sex from Mexico, the recognition of a smaller 

 southern race would appear to be justified. It is possible the two specimens in 

 question have the sex erroneously determined, since they are both decidedly larger 

 than the single male examined from the same locality. 



