26 



BULLEllN 50, UNITED STATES NATIONAL MUSEUM. 



half; inner woh of outermost rectrix with more than terminal half 

 white, that of the second witli about (or a litth> less than) terminal half 

 white; maxilla black, becoming grayish beneath nostrils; mandible 

 grayish (bluish gray in life?) with blackish tip; iris brown; legs and 

 feet dusky (plumbeous in life)^ length (skins), S7J)-108.7(102.1); wing, 

 55.6-64.8 (60.07); tail, 31-3l».0 (85.3); exposed culmen, 7.1-8.9 {>>.6); 

 depth of bill at base, 5.1-5.6 (5.3); tarsus, 1-4. 2-15. 7 (15); middle toe, 

 10.4-11.9 (11.2)."' 



Adult female. — Above plain olive-green faintly glossed with metallic 

 greenish, the forehead, rump, and upper tail-coverts slightl}' more 

 yellowish olive-green; inner web of outermost rectrix with a terminal 

 spot of white; lores pale grayish, margined aV)Ove by an indistinct 

 dusk}^ line; suborbital and auricular regions olive-green, passing into 

 more yellowish olive-green on anterior })ortion of malar region, the 

 chin light yellowish olive-green or olive-yellowish; throat and median 

 portion of chest and l)reast very pale gray or grayish white, passing 

 into purer wdiite on a])domen, the chest usually more tinged with gray; 

 postauricular and postmalar region deeper gra}"; sides of breast, sides, 

 and flanks bright yellowish olive-green, strongly contrasted with whit- 

 ish of median under parts; under tail-coverts pale olive-yellowish; bill, 

 etc., as in adult male; length (skins), 89.7-109.2 (97.8); wdng, 55.1-60.5 

 (57.7); tail, 29.7-35.3 (32.3); exposed culmen, 7.1-8.9 (7.9); depth of 

 bill at base, 5.1-5.3; tarsus, 14.2-15.2 (14.7); middle toe, 10.4-11.9 

 (11.2).-^ 



Young inale^f I'd X'^ummie. — Similar to adult female, but plumage 

 of looser texture, and olive-green of upper parts without gloss. 



' Zeledon, inanuscript. 

 - Sixteen specimens. 

 ^ Six specimens. 



Specimens from Mexico, Guatemala, and Costa Rica average, respectively, in 

 measurements as follows: 



Adult males from Guatemala and those from the Mexican States of Chiapas and 

 Tabasco are strongly violaceous above, while those from Costa Rica are more green- 

 ish; those from Vera Cruz and southern Tamaulijjas (Tampico), however, are very 

 similar in coloration of the upper parts to those from Costa Rica, but are paler yellow 

 below than either the latter or those from Guatemala. It therefore follows that if 

 any subdivision of the species be made, three forms will require recognition. The 

 series is nuich too small, however, to enable me to decide the question. 



