452 BULLETIN 50, UNITED STATES NATIONAL MUSEUM. 



or less) and tinged with cinnamomeous; bill black; iris yellow to 

 orange-yellow; bare orbital space pale grayish blue, sometimes tinged 

 with red; legs and feet lake red; length (skins), 265-284 (275) ; wing, 

 142-145 (143.7); tail, 98-103 (101.5); exposed culmen, 15.5-17 (16.1); 

 tarsus, 28-31 (29.4); middle toe, 22-26 (24.2).° 



Adult female. — Similar to the adult male and not always distin- 

 guishable, 5 but usually(?) somewhat duller in coloration, especially 

 the foreneck and chest, which are somewhat darker and less vina- 

 ceous; length (skins), 255-275 (263); wing, 129.5-143 (137.8); tail, 

 93-108 (98.1); exposed culmen, 15-17.5 (16.4); tarsus, 27-29 (28.1); 

 middle toe, 22-24.5 (23.3). c 



Young. — Very different in coloration from adults. Above olive- 

 brown, including pileum, the interscapulars, scapulars, wing-coverts, 

 remiges, and upper tail-coverts margined terminally with light rusty 

 brown or cinnamon, the feathers of rump with pale buffy brown 

 terminal margins, the greater wing-coverts and proximal secondaries 

 sometimes with mesial streaks of light rusty brown or cinnamon; 

 foreneck and chest grayish brown or drab, the feathers margined 

 terminally with pale buffy; rest of under parts pale brownish buffy, 

 darker laterally, paler (pale dull buff to dull buffy white on center 

 of abdomen, anal region, and under tail-coverts). 



Yucatan (Merida; Chichen-Itza; Buctzotz; Izamal; Temax; Tizi- 

 mln), Tabasco (Montecristo; Tlapa), Campeche, southeastern Vera 



= Four specimens. 



& If determination of sex by collectors can 



« Nine specimens. 



always be trusted. 



Locality. 



Wing. 



Tail. 



Ex- 

 posed 

 culmen. 



Tarsus 



Middle 

 toe. 



MALES. 



Three adult males from Yucatan 



One adult male from eastern Chiapas (Teopisca) 



One adult male from British Honduras 



Thirty-two adult males of L. f. brachyptera 



Five adult males of L.f. capitalis 



FEMALES. 



One adult female from southern Vera Cruz (San Andres Tuxtla). 



One adult female from Tabasco (Monteoristo) 



Four adult females from Yucatan 



One adult female from eastern Chiapas (Huehuetan) 



One adult female from northeastern Guatemala (Toyabaj, 



Quiche) 



Twenty-seven adult females otL.f. brachyptera 



Three adult females otL.f. capitalis 



143.3 



145 



141 



146.5 



151.9 



129.5 

 136 

 140.2 

 133 



140 



143.8 



149.3 



101 ' 



103 



108 



107.2 



105.7 



95.5 

 95 



98.9 

 94.5 



94.5 

 103.3 

 103 



16.3 



15.5 



16 



16 



17.6 



17 



16 



16.7 



15 



17 



16.2 



18.2 



28.8 



31 



28.5 



30.1 



31.8 



23.5 

 27 

 28.4 

 27.5 



27.5 

 29.4 

 30.3 



23.7 

 26 



24.3 



24.2 



23 

 24 

 23.6 



23 



24.1 



24.8 



