BIRDS OF NORTH AND MIDDLE AMEPJOA. 879 



long as commissure and slightly move than one-fourth as long as 

 .wing, the acrotarsium fused ("hooted"); middle toe, without claw, 

 a little more than half as long as tarsus, its hasal phalanx wholly 

 united to hoth outer and inner toes; outer toe, without claw, reaching 

 about to terminal joint of middle toe, the inner toe decidedly shorter, 

 reaching to a little beyond middle of subterminal phalanx of middle 

 toe; hallux about as long as inner toe, or slightly shorter, not con- 

 spicuously stouter, its claw much shorter than the digit; all the claws 

 moderately curved and sharp, much compressed. 



Coloration. — Above plain olive, the ])ileum rufescent, bordered with 

 black and with a central patch of yellow in adult males; sides of head 

 and under parts pale yellow or olive-yellow, the former with a black 

 patch below eye. 



Range. — Costa Rica to Guiana and Ecuador. (Two species.) 



KEY TO THE SPECIES OP PLACOSTOMUS. 



a. Under parts light yellow (nearly naples yellow), tinged with olive on chest and sides. 



(Northern Colombia to ('osta Rica.) Placostomus superciliaris (p. 379) 



aa. Under parts dull cream-buff, tinged with ))rown on chest and sides. (Ecuador and 

 northern Bolivia.) Placostomus coronatus (extralimital) <^ 



PLACOSTOMUS SUPERCILIARIS (Lawrence). 

 LAWRENCE S SPADE-BILLED FLYCATCHER. 



Adult male. — Pileum margined laterally by a narrow line of black, 

 the median portion lemon yellow (largely concealed), the lateral por- 

 tions russet or dull cinnamon-rufous, passing gradually into dull brown 

 next to the black line on each side; hindneck, back, scapulars, rump, 

 upper tail-coverts and lesser wing-coverts, plain olive; wings (except 

 lesser coverts) and tail dusky with light brown (broccoli or hair brown) 

 edgings; a narrow^ superciliary stripe of pale naples or primrose yellow; 

 a black patch on upper posterior portion of auricular region and another 

 beneath eye, the space between olive-yellowish; under parts light 

 yellow (nearly naples yellow), the chest, sides, and flanks strongly 

 tinged with olive ; maxilla black, mandible whitish (in dried skins) ; 

 legs and feet pale horn color (in dried skins) ; length (skins), 70-85 (80) ; 

 wing, 50.5-58.5 (54.9); tail, 19.5-25 (22.9); exposed culmen, 11-12.5 

 (11.3); tarsus, 13-14.5 (13.6); middle toe, 7.5-8.5 (S.l).'' 



Adult female. — Similar to the adult male, but crowm-patch wholly 



cinnamon-rufous or orange-rufous or with only a trace of yellow in 



central portion; length (skins), 71.5-84 (77); wing, 50.5-65 (52.7); 

 • ; ^ . 



o- Platyrhynclius coronatus Sclater, Proc. Zool. Soc. Lond., 1858, 71 (Rio Napo, e. 

 Ecuador; coll. P. T.. Sclater); Oat. Am. Birds, 1862, 207, pi. 17; Cat. Birds Brit. Mus^, 

 xiv, 1888, 68; .Vlleii, Bull. Am. Mus. N. H., ii, 1889, 85 (Falls of Madeira, n. Bolivia).— 

 Placostnmitu corrDKitua Ridgway, Proc. Biol. Soc. Wash., xviii, Sept. 2, 1905, 208. 



*> Fifteen specimens. 



