HIKDS OK NORTH AND MIDDLE AMERICA. 607 



Genus HENICORHINA Sclater and Salvin. 



Heterorliiiid (not of Wentwood, LS45) Baikd, Review Am. Binls, Aii^r., lSf)4, 94^ 



115. (Tyj)e, ScijUilnpus prosfhelcKoii^ HAater.) 

 Jfenicorhiiia Sclatek and Salvix, Proc. Zool. Soe. Lond., ISfiS, 170 (substitute 



for IfctcrorJibia Baird, preoccupied). 



Very siiiiill 'rroolodytidu' (wiiio- 49-00 miii.) most rosonihlin*^ Xa/oi- 

 orehilm, i)ut with tail only half as long- as wing-, nostril oponing throuoh 

 middle of nasal fossa, and coloration \Qi-y difi'eront (sides of neck 

 streaked with lilaok and white). 



Bill shoi-ter than head, nearly strait^ht, moderately compressed 

 anterior to nostrils, its depth at latero-frontal antia' e(iual to or slio-htly 

 less than its width at same point, and equal to one-third the distance 

 from nostril to tip of maxilla, or less; exposed culmen longer than 

 middl(> toe without claw, very uuich sliort(>r tlnin tarsus, very faintly 

 if at all curved until near tip, where oradually dccurvcd; g"onys much 

 shorter than distance from nostril to tip of maxilla; maxillary tomium 

 straight or very faintly concave, distinctly notched subterminally; 

 rictus slightly dcHexed. Nostril longitudinal, fusiform or elliptical, 

 surrounded b^^ membrane except in front. Kictal bristles obvious, two 

 or three of them quite distinct. Wing short, much rounded, very con- 

 cave beneath; seventh and sixth, or seventh, sixth, and fifth primaries 

 longest; eighth intermediate between first and second; ninth very 

 much shorter than secondaries, much less than fwic(» as long as tenth. 

 Tail very short, about half as long as wing, much rounded, the rectrices 

 broadly rounded at tip. Tarsus verv long (al)out half as long as 

 wing), the acrotarsium distinctly scutcUate, the planta tarsi booted; 

 middle toe with claw much shorter than tarsus; outer toe (without 

 claw) reaching to considerably beytmd sul)terminal joint f)f nnddle toe, 

 its claw not reaching to base of middle claw; inner toe slightly shorter 

 than outer; hallux (without claw) as long as outer toe (without claw), 

 but nuich thicker, its claw decidedly shorter than the digit; basal 

 phalanx of middle toe adherent to outer toe for gn^ater i)art of its 

 length, to inner toe for more than half its length. 



Coloration. — Above l^rown, the wings and tail barred with black; 

 pileum and hindneck (at least laterally) l)lack; sides of head and neck 

 black streaked with white, these streaks very conspicuous on sides of 

 neck; under parts white, becoming gray on sides and brown on Hanks, 

 or else almost whollv gray. Young not essentially diti'erent from 

 adults. 



ShJif cation. — Nest (of //. prostheleuca) ''formed of mosses inter- 

 woven with great skill . . . lined with red feathers from the abdomen 

 oi Troc/on inexicaiuif! . . . suspended or rather fastened to the branches 

 of shru])s, and so skillfully done ... as to be readily mistaken for a 

 bunch of moss."" 



Range. — Southern Mexico to Peru, Bolivia, and (iuiana. 



«Sumichra,-^t, .Mini. Bost. Soc. ^^ H., i. 1869, 545. 



