BIRDS OF NOETH AND MIDDLE AMERICA. 419 



gvay or partly olive-green above, the wings dusky with two whitish 

 bands, no white or yellowish spot on crown, under parts pale gray 

 anteriorly, pale yellowish posteriorly) . 



Bill half as long as head, or less, thick, relatively broad at base, its 

 width at frontal antia^ much more than half the length of exposed cul- 

 men, much greater (sometimes nearly twice) its depth at same point; 

 exposed culmen equal to middle toe without claw (S. glaher) or de- 

 cidedly shorter (S. griseocularis) , distinctly (S. glaher) or indistinctly 

 (in S. griseocularis) ridged, straight basally, gradually decurved ter- 

 minally, the tip of maxilla slightly uncinate (S. glaher) or barely so 

 (*S'. griseocularis) ; gonys a little longer than mandibular rami(*S'. glaher) 

 or just as long (S. griseocularis), slightly convex; maxillary tomium 

 nearly straight, distinctly notched subterminally. Nostril exposed, 

 large, broadly oval or nearly circular, nonoperculatc. Rictal bristles 

 obvious but small, the feathers of chin and frontal antise with distinct 

 bristly points. Wing moderate, rather pointed, the longest primaries 

 exceeding secondaries by more than length of exposed culmen; 

 seventh and eighth primaries longest, the sixth and ninth but little 

 shorter, the tenth (outermost) equal to second or fourth. Tail nearly 

 as long as mng, slightly rounded. Tarsus a little more than one- 

 fourth as long as wing, its scutellation distinct, typically exaspidean; 

 middle toe, without claw, half as long as tarsus or slightly more, its 

 basal phalanx wholly united to outer toe, about half united to inner 

 toe; outer toe, without claw, reaching to or slightly beyond middle of 

 subterminal phalanx of middle toe, the inner slightly shorter; hallux 

 about as long as inner toe, stouter, its claw shorter than the digit; all 

 the claws moderately curved, sharp, much compressed. 



Coloration. — Above plain brownish gray, or partly olive-green, 

 without any concealed white or other color on crown; wings more 

 dusky with paler edgings, the middle and greater coverts broadly 

 tipped with dull whitish; under parts pale grayish anteriorly, pale 

 yellow posteriorly. 



Nidiji cation. — (Unknown ?) 



Range. — Costa Rica (Pacific side) to southern Peru, Ai-gentina, and 

 southeastern Brazil. (Five species.) 



KEY TO THE SPECIES OP SUBLEGATUS. 



a. Larger (wing G5-78 mm.); pileum dusky, or else brownisli gray concolor with back. 



b. Pileum diipky or blackish. (Western Costa Rica.). -Sublegatus arenarum (p. 420) 



bb. Pileum grayish brown (hair brown), concolor with l)ack tir very slightly less 



olivaceous. 



c. Bill much larger (exposed culmen 9.5-12); wing-bands less shari)ly defined, 



usually darker; under parts of body brighter yellow. (Panama to Trinidad 



and Venezuela.) Sublegatus glaber (p. 42 1) 



