.\^ IF SO UTH A MERICA N BIRDS— OBERHOLSER. 6 5 



POGONOTRICCUS ALLENI, new species. 



Chars, sp. — Similar to Pogonotriccus plumheieejj.s^ but smaller, the 

 yellow of lower parts deeper and more greenish, the chin yellowish 

 instead of whitish, the aurioulars with a black posterior band, the 

 plumbeous of head somewhat darker, the green of upper surface 

 ])i'ighter. 



Description. — T3-pe, No. 71758, American Museum of Natural His- 

 tory; Rio Cauca, United States of Colombia, June, 1898; J. H. Batty. 

 Crown and occiput deep plumbeous with a slight brownish tinge; rest 

 of upper surface bright olive green; tail fuscous, edged with olive 

 green; wings fuscous, the lesser coverts margined with olive green, the 

 median and greater coverts with greenish yellow, forming two wing 

 bars, the secondaries similarly edged, the primaries more narrowly 

 with the same color; lores and ill-delined supcrciliar}- stripe grayish 

 white, mixed with slaty p]uml)eous; e3^e ring grayish white; subocular 

 area mixed plumbeous and whitish; anterior auriculars dull sulphur 

 yellow, this succeeded posteriorly b}^ a black band; supra-auricular 

 region with a dull white spot, contiguous to the end of superciliar}- 

 stripe; sides of neck olive green like the back; entire lower surface 

 deep greenish j^ellow, clearest posteriorly, much overlaid with olive 

 green on the breast, duller and paler on the chin and upper throat; 

 axillars and under wing-coverts pale 3"ellow; inner margins of wing- 

 (|uills yellowish white. Wing, 57 mm. ; tsiil, 52 mm. ; exposed culmen, 

 8 mm.; tarsus, 14.5 mm.; middle toe, 7.5 mm. 



The single specimen on which this new species is based was origi- 

 nally identilied as Pogonotriccus 'plunihelceps^ but it so greatly differs 

 from that species, with the type of which it has been compared, that 

 there is not the slightest doubt of its distinctness; and furthermore 

 it seems not to agree with any described form. In general appearance 

 it is a much brighter colored bird than P. pluitihelceps^ this particu- 

 larly conspicuous on the upper parts and about the head. There is 

 much more blackish and slat}^ on the sides of the head; the more 

 deeply yellowish wing margins are broader; the anterior ear-coverts 

 are deep yellow; the crissum is darker yellow; the breast much more 

 strongly shaded with olive. From Pogonotriccus zeledonl it differs in 

 nmch the same respects, yet even more decidedly; and it ma}' be dis- 

 tinguished from P. exlmius by its larger size, slat}" plumbeous crown 

 and occiput, more yellowish edgings of the wings, slightly ashy chin 

 and slaty mixture in the white of lores and superciliary stripe. 



This tine new species is with great pleasure dedicated to Dr. J. A. 

 Allen, through whose kindness the privilege of publishing this descrip- 

 tion is accorded, and to whom further the writer owes much for favors 

 past and present. 



Proc. N. M. vol. XXV— 02 5 



