FAMILY TYRANNIDAE 487 



those taken by Goldman was filled with remains of small- and 

 medium-size beetles, and bits of a hymenopteran. 



The species is represented in collections made by Carriker in 

 Colombia, from Socarre. Department of Cordoba ; Santa Rosa and 

 Coloso, Department of Bolivar ; and Casacara, Department of 

 Magdalena. 



The series seen as a whole includes five males and two females from 

 Panama, and five males and three females from northwestern Co- 

 lombia. Those from Panama appear slightly smaller, and also have 

 the breast band faintly grayer, the throat somewhat grayish, and the 

 yellow of the abdomen and sides slightly paler. Measurements of 

 the five males are as follows: wing 57.8-58.9 (58.1), tail 51.2-53.2 

 (52.2), culmen from base 13.4-13.9 (13.6), tarsus 14.7-15.2 

 (14.9) mm. 



The Colombian birds, in which the throat is whiter, the breast band 

 faintly darker, and the yellow faintly brighter, measure as follows : 

 Wing 60.6-64.9 (62.4), tail 53.8-57.6 (55.4), culmen from base 13.5- 

 13.9 (13.6), tarsus 14.3-15.6 (14.9) mm. 



With additional material it may prove that two subspecies may be 

 recognized. 



Griscom has listed this species in the genus Aphanotriccus, but it 

 should be noted that while there is a general resemblance in form of 

 bill, and particularly in the small feet, the rictal bristles in audax are 

 definitely shorter and less developed. For the present I prefer to 

 recognize Praedo as a separate genus. 



MYIOBIUS SULPHUREIPYGIUS AUREATUS Bangs: Sulphur- 

 rumped Flycatcher, Moscareta Rabadilla Azufrada 



Figure 42 



Myiobins xanthopygus aurcatus Bangs, Proc. New England Zool. Club, vol. 4, 

 March 19, 1908, p. 27. (Divala, Chiriqui, Panama.) 



Small ; olive-green above, with yellow rump ; a cinnamon-brown 

 band across breast ; abdomen yellow. 



Description. — Length 115-125 mm. Adult male, crown, hindneck, 

 back, and scapulars, dark greenish olive; posterior half of crown with 

 a partly concealed patch of yellow to slightly orange-yellow ; rump 

 pale yellow ; upper tail coverts and tail slightly brownish black ; 

 side of head light olive-buff ; lores similar but buff partly obscured by 

 dark tips of the feathers ; wings dusky, the primaries and secondaries 

 edged indistinctly with dull brown ; chin and throat pale grayish 

 yellow ; breast and sides tawny-brown ; abdomen and flanks light 



