668 BULLETIN 50, UNITED STATES NATIONAL MUSEUM. 



twice the width of bill at frontal antiae), rictal bristles much weaker, 

 and nostril much higher (midway between tomium and culmen) ; more 

 nearly related to Gonopias,'^ but bill relatively much larger (exposed 

 culmen equal to or slightly longer than tarsus), and crown with a 

 large concealed patch of yellow. 



Bill decidedly shorter than to nearly as long as head, broadly 

 cuneate in vertical profile, its width at frontal antisR much more than 

 half the length of exposed culmen and nearly twice its depth at same 

 point; culmen nearly if not quite straight to near tip, where rather 

 al)ruptly decurved, the tip of maxilla moderatel}^ uncinate; gonys 

 longer than mandibular rami, distinctly convex, at least basally; 

 maxillary tomium nearly straight, distinctly deflexed basally and 

 notched subterminally. Nostril exposed, very small, broadly oval or 

 nearh^ circular, situated midway between tomium and culmen, with 

 broad membrane filling nasal fossae above and behind. Rictal bris- 

 tles distinct, but rather weak; latero-frontal antrorse bristles distinct, 

 but small. Wing rather short, rounded, the longest primaries exceed- 

 ing secondaries by much less than length of exposed culmen; ninth, 

 eighth, or ninth, eighth and seventh primaries longest, the tenth 

 (outermost) equal to fourth or intermediate between fourth and fifth. 

 Tail equal to length of wing from bend to end of longest seconda- 

 ries, or slighth' longer, even or very slightly emarginate or doul)le- 

 rounded. Tarsus equal to or slightly shorter than exposed culmen 

 (slightly more than one-fifth as long as wing), its scutellation typicall}^ 

 exaspidean; middle toe (without claw) decidedly shorter than tarsus; 

 outer toe reaching to middle of subterminal phalanx of middle toe, 

 the inner toe slightly shorter; basal phalanx of middle toe united to 

 outer toe for half its length, or more; hallux (without claw) shorter 

 than inner toe (without claw), its claw shorter than the digit. 



Coloration. — Pileum blackish, inclosing a yellow crown-patch and 

 encircled by a broad band of white ; a broad blackish stripe on side of 

 head; upper parts greenish or grayish olive; under parts yellow, the 

 chin and throat white in one species. 



Range. — Panama to Brazil. (Two species.) 



KEY TO THE SPECIES OP CORYPHOTRICCUS. 



a. Throat white; back, etc., greenish olivo. (Pananui.) 



Coryphotriccus albovittatus (p. 069) 



an. Throat yellow, like rest of under parts; back, etc., grayish olive. (Guiana to 



Brazil.) Coryphotriccus parvus (extraliraital) 6 



a Conopias Cabanis and Heine, Mus. Hein., ii, Sept., 1859, 62, footnote. (Type, 

 Tyrannula supereiliosa Swainson, = Miiscicapa trinrgata Maximilian.) (South Amer- 

 ica; three species.) 



b Pitangus parvus Ve\'/,e\n, Orn. Bras., ii. Abth., 18(59, 181 (Maribatanas, Brazil; coll. 

 Vienna Mus.); Salvin, Cat. Strickland Coll., 1882, 310 (crit.); Sclater, Cat. Birds Brit. 

 Mus., xiv, 1888, 179. 



