SULPHUR-RUMPED MYIOBIUS 



Colombia and Western Ecuador, recorded from 

 Lion Hill. 



33. Myiobius sulphureipygius aureatus Bangs 

 Sulphur-rumped Myiobius 



Myiobius xanthopygus sulphureipygius RIDGWAY, Birds 

 of N. and M. Amer., IV, p. 490, 1907; STONE, Proc. Phila. 

 Acad. Nat. Sci., 1918, p. 267. 



Male. Length, 121 mm. (4.75 in.); tail, 

 54 mm. (2.15 in.). Resembling the following 



FIG. 76. Myiobius sulphureipygius aureatus 



(Nat. Size) 



species, M. a. atricaudus, but deeper and some- 

 what browner above, the rump also light sulphur 

 yellow; chin and throat grayish yellow; chest 

 and sides tawny; middle of breast and abdomen 

 pale sulphur yellow. 



Female. About the same size as male, but 

 usually without the yellow patch on the head. 



Found chiefly in heavy forest. 

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