468 BULLETIN 50, UNITED STATES NATIONAL MUSEUM, 



{'!)('apsU'nipis orhitalis Cabanis, Journ. fiir Orn., xxi, Jan., 1873, 68 (Monterico, 

 w. Peru; coll. "Warsaw Mus.?). — Taczanowski, Proc. Zool. Soc. Lond., 1874, 

 536 (Monterico); Orn. du Perou, ii, 1884, 250. — Sclater, Cat. Birds Brit. 

 Mus., xiv, 1888, 121. 



Genus CAPSIEMPIS Cabanis and Heine. 



CapsicDipis"^ Cabanis and Heine, May. Hein, ii, Sept., 1859, 56. (Type, Mnsci- 

 capn Jiareola Iviclitenstein.) 



Small Tyrannitl* (wing about 48-50 iniii.), with tail equal to or 

 loRorer than wing, strongly rounded, and coloration plain olive-green 

 above (the wing with two dull yellowish bands), yellow below (tmged 

 with olive laterally). 



Bill rather shorter than head, rather broad and depressed basally, 

 its width at anterior end of nostrils equal to more than half the dis- 

 tance from nostril to tip of maxilla and much greater than its depth 

 at same point; exposed culmen shorter than middle toe with claw, 

 distinctly ridged, curved from base, at first faintly, then more 

 strongly, the tip of maxilla distinctly but minutely uncinate; gonys 

 much longer than mandibular rami, slightly convex, ascending ter- 

 minally; maxillary tomium nearly straight for greater part, grad- 

 ually deflexed basally, distinctly notched subterminally. Nostril 

 exposed, longitudinally oval, margined above by membrane, but 

 not distinctly operculate. Rictal bristles w^ell developed, more than 

 half as long as bill, the feathers of chin and frontal antise with distinct 

 bristly tips. Wing moderate, much rounded, the longest primaries 

 exceeding secondaries by less than length of middle toe without claw ; 

 sixth, seventh, and eighth primaries longest, ninth equal to fourth, 

 tenth (outermost) shorter than secondaries. Tail equal to or slightly 

 longer than wing, strongly rounded, the lateral rectrices shorter than 

 middle pair by about length of exposed culmen, the rectrices rather 

 narrow, broadly rounded at tip. Tarsus one-third or more as long as 

 wing, its scutellation ultra-exaspidean,^ the acrotarsial segments very 

 distinct; middle toe, without claw, slightly less than half as long as 

 tarsus, its basal phalanx almost wholly united to outer toe, about 

 one-half united to inner toe; outer toe, without claw, reaching to 

 beyond middle of subterminal phalanx of middle toe, the inner toe 

 slightly but distinctly shorter; hallux as long or very nearly as long 

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

 moderately curved, sharp, compressed. 



Coloration. — Above plain greenish olive, the wings and tail dusky, 

 with greenish olive edgings (more yellowish on secondaries), the mid- 

 dle and greater coverts broadly tipped with pale olive; under parts 

 yellow^, faintly shaded on chest and sides with pale olive. 



o "Von ;<:di'roL) (Schnappen) und ejuooie, (Mucke)." 



h The acrotarsium entirely inclosing the tarsus, its two edges in close contact along 

 posterior inner side. 



