350 



BULLETIN 50, UNITED STATES NATIONAL MUSEUM. 



and Duenas, Guatemala; Chontale;^, Nicaragua?). — Salvin and Godman, 

 Biol. Centr.-Am., Aves, ii, 1892, 304, part (Jalapa; Santa Efigenia, Tapana, 

 Tonila, etc., Oaxaca; Guatemalan localities; Volcan de San Miguel and La 

 Libertad, Salvad6r; Chontales, Nicaragua). 



ANTHOSCENUS CONSTANTH CONSTANTH (Delattre). 



CONSTANT'S STAR-THROAT. 



Adult male. — Above metallic bronze or bronze-green, somewhat 

 duller on pileum, especially on forehead; rump with a longitudinal 

 median patch or broad streak of white; middle rectrices usually 

 dusky terminally, the other rectrices extensively blackish terminally, 

 the inner web tipped with a spot of white; remiges brownish slate or 

 dusky, faintly glossed with purplish; a postocular spot and a con- 

 spicuous rictal stripe dull white, the auricular, suborbital, and loral 

 regions dusky; chin sooty or blacldsh; throat bright metallic red or 

 purplish red (varjdng from orange-red or scarlet to rose-red)," the 

 feathers narrowly margined terminally with pale grayish or dull 

 whitish (invisible except when viewed from behind); under parts of 

 body brownish gray (deep smoke gray or nearly mouse gray), fading 

 to white on abdomen and anal and femoral regions; under tail-coverts 

 pale gray basally, dusky subterminally (in form of a V- or U-shaped 

 bar), broadly white terminally; a large and conspicuous tuft of silky 

 white feathers on sides, between flanks and back; bill dull black; iris 

 dark brown; feet dusky; length (skins), 113-130 (119); wing, 63-70.5 

 (66.9); tail, 28.5-37 (34.1); culmen, 33.5-36.5 (34.5).'' 



Adult female. — Very similar to the adult male and not always dis- 

 tinguishable, but usually ( ?) with the blackish of cliin slightly more 

 extended; length (skins), 113-128 (117); wing, 64-68.5 (65.7); tail, 

 31-34 (32.6); culmen, 34-37.5 (35.5).^ 



o The more orange hue characterizes specimens in older or more worn plumage, the 

 more purplish or rosy hue those in fresh livery. 

 f> Fifteen specimens. 

 cTen specimens, from Costa Rica. 



Locality. 



MALES. 



Ten adult males from Costa Rica 68 34.4 35.2 



One adult male from Salvador 70 34.5 35.5 



Seven adult males from Guatemala ri4.9 33.7 33.3 



One adult male (^. c. ieocadias) from Chiapas 65.5 33 35 



Fifteen adult males (j4. c. Zcocodfe) from Oaxaca, Guerrero, etc., Mexico 67.1 33 34.4 



FEMALES. 



Ten adult females from Costa Rica 65. 7 32. 6 35. 5 



Two adult females (.4 . c. ^cocodix) from Chiapas 59.5 30.2 34.2 



Three adult females (.4. c. teocodja;) from Guerrero, etc., Mexico 65 31.3 33.8 



With the exception of the type, which is said to be from Guatemala, all Guatemalan 

 examples examined are much paler below than those from Costa Rica and Nicaragua; 



Ex- 

 posed, 

 culmen. 



