346 



BULLETIN 50, UNITED STATES NATIONAL MUSEUM. 



ANTHOSCENUS LONGIROSTRIS LONGIROSTRIS (Vieillot). 



LONG-BILLED STAR-THROAT. 



Adult male. — Forehead and crown bright metallic blue to greenish 

 blue; occiput and Mndneck dark bronze or coppery bronze, appear- 

 ing nearly black when viewed from in front; back, scapulars, wing- 

 coverts, rump, upper tail-coverts and middle rectrices metallic bronze or 

 bronze-green, the last sometimes blackish terminally ; center of rump 

 with an elongated white patch, spot, or broad streak; lateral rectrices 

 metalhc bronze or bronze-green basally, blackish terminally , the two out- 

 ermost usually with a terminal spot of white (smaller on second rectrix) ; 

 remiges dark brownish slate or dusky, faintly glossed with purplish; a 

 small (usually indistinct) postocularspot of wliitish; a broad and con- 

 spicuous rictal streak or stripe of dull white; chin dull black; throat 

 metalhc reddisli purple (pomegranate to magenta) , the featliers dusky 

 basally ; foreneck, sides of neck, chest, and breast, brownish gray (nearly 

 mouse gray laterally, paler medially), fading into wliite on abdomen; 

 sides and flanks metallic bronze or bronze-green, the feathers gray 

 basally and, usually, margined with the same ; under tail-coverts dusky, 

 broadly and sharply tipped or terminally margined with white; a 

 large and conspicuous tuft of silky white feathers between flanks and 

 rump; bill dull black; iris dark brown; feet dusky; length (skins), 

 104-126 (112); wing, 57-63 (59.7); culmen, 30-36 (33.4) .« 



Adult female. — Similar to the adult male but forehead and crown dull 

 metallic green (similar to but duller and darker than color of back) , 

 blackish of cliin more extended, sometimes occupying greater part of 

 throat, where the metalhc reddish purple is sometimes restricted to a few 

 feathers on extreme lower portion, and gray of under parts slightly 

 paler, especially along median line; length (skins), 106-119 (112) ; wing, 

 56.5-61 (59.3); tail, 28.5-34.5 (31.3); culmen, 32-35.5 (33.7).'' 



« Twenty-six specimens. 



b Fifteen specimens. 



Locality. 



MALES. 



One adult male from British Guiana 



Six adult males from TrinidAd 



Four adult males from Colombia (Bogota,, etc.) 



Five adult males from Panamd 



Ten adult males from Costa Rica 



Seven adult males (A. I. pallidiceps) from Guatemala. 

 Four adult males (A. I. pallidiceps) from Mexico 



FEMALES. 



Three adult females from Trinidad 



Two adult females from PanamA 



Nine adult females from Costa Rica 



One adult female (^A. I. pallidiceps) from Guatemala.. 



Wing. 



58 



58.2 



61.0 



69.9 



59.8 



59.9 



55.8 



58.2 

 58 



60.2 

 57 



29.5 

 32.2 

 32.7 

 32.7 

 31.5 

 32.6 

 32.2 



30.5 

 30.7 

 3L8 

 32 



Cul- 

 men. 



33 



32.6 



34.7 



33 



33.6 



31.6 



32.2 



34 

 33 



33.5 

 32.5 



With the material examined I am unable to make out satisfactorily any geographic 

 variations sufficiently marked or constant to warrant the recognition of two or more 

 subspecies. Costa Rican sjxM'imens, however, vary more or less toward A. I. pallidi- 

 ceps, some examples being hardly distinguishable from the latter. 



