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 hindneck dark bronze or coppery bronze, appear- 
ing nearly black when viewed from in front; back, scapulars, wing- 
coverts, rump, upper tail-coverts and middlerectrices metallic bronze or 
bronze-green, the last sometimes blackish terminally; center of rump 
with an elongated white patch, spot, or broad streak; lateral rectrices 
metallic 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) postocular spot of whitish; a broad and con- 
spicuous rictal streak or stripe of dull white; chin dull black; throat 
metallic reddish purple (pomegranate to magenta), the feathers dusky 
basally ; foreneck, sides of neck, chest, and breast, brownish gray (nearly 
mouse gray laterally, paler medially), fading into white 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 (83.4).@ 
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 chin more extended, sometimes occupying greater part of 
throat, where the metallicreddish purple is sometimes restricted to afew 
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).® 
a Twenty-six specimens. « b Fifteen specimens. 
Locality. Wing. | Tail. Baty 
MALES. 
One adult male from British Guiana. .... 22.2... 2. eee eee nec ee ence eens ceeeees 58 29.5 33 
Six adult migles from: Trimiddd..gs ews scsceews scawensacawasesvanedeesssuencaccees 58.2 32.2 32.6 
Four adult males from Colombia (Bogoté, etc.). 2.2.22... cece eee ee cece cece eee 61.6 32.7 34.7 
Five adult males HOM PABA. pas se ac ncsndwnwne es doko neeeerareeaeennsaeen 59.9 32.7 33 
Ten adult males from Costa Rica.............0- cece eee ee eee eee cc enn e een eenee 59.8 81.5 33.6 
Seven adult males (A. 1. pallidiceps) from Guatemala.................----e2000- 59.9 32.6 31.6 
Four adult males (A. 1. pallidiceps) from Mexico..........2-0-00-2ee0 eee eenee eee 55.8 32.2 32.2 
FEMALES. 
Three adult females from Trinidfd............. 2... eee cece eee cence teen eee eeees 58.2 30.5 34 
Two adult females from Panam&.......-.. 21... eee ee eee cece eee eee ---| 58 30.7 33 
Nine adult females from Costa Rica.........----- 2-0 -e ee ee eee eee eee ee ---| 60.2 31.8 33.5 
One adult female (A. J. pallidiceps) from Guatemala 57 32 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 specimens, however, vary more or less toward A. l. pallidi- 
ceps, some examples being hardly distinguishable from the latter. 
