Mr. G. N. Lawrence on Muscipeta incanesceus. 497 



XLVII. — Note on Muscipeta incanescens, Wied. 

 By George N. Lawrence. 



During my investigation of certain doubtful species of Tyrant- 

 birds I examined the type of M. incanescens, Wied, in the 

 American Museum of Natural History, in the city of New 

 York. Much to my surprise I found it to be of a very dif- 

 ferent form from Ornithion obsoletum, O. pusiUum, and the 

 bird from Mexico described by Mr. Sclater under the name 

 of Camptostoma imberbe, which last he considers to be identical 

 with M. incanescens, and places it in the genus Ornithion (see 

 P.Z. S. 1873, p. 577). 



As M. incanescens proves to be of quite a different genus, 

 and C. imberbe clearly belongs to the genus Ornithion (as 

 stated by Mr. Sclater), his title must be reinstated, and the 

 species called Ornithion imberbe, Scl. 



M. incanescens, Wied, is greyish olive above, with the 

 centres of the crown-feathers inconspicuously dull reddish 

 brown ; lores and a space behind the eye greyish white ; under 

 plumage greyish white, with just a perceptible tinge of fulvous 

 on the breast and abdomen ; wing-coverts and quills rather 

 light brown, the middle and greater coverts and the secon- 

 daries ending with whitish ; tail-feathers light brown, like the 

 wings, the outer web of the outer feather paler ; bill wide 

 and of a blackish brown colour, lighter at the base of under 

 mandible, it is furnished with rictal bristles, which are quite 

 long though rather slender ; bend of the wing and under 

 wing-coverts white with a scarcely perceptible tinge of yel- 

 low ; tarsi and toes hazel-brown. 



Wing 2yig- inches, tail 2, tarsus ^, bill from front -j^^^, 

 width of bill ^-^. 



In general appearance it much resembles some species of 

 Ornithion ; but the bill differs gi'eatly : viewed from above it 

 is precisely of the form of the bill of my specimen of Myiobius 

 pulcher, not differing in length and width; but it is rather 

 higher, and a side view of it is much like that of an Ornithion ; 



Andes, the last-mentioned bird extending its range from Guiana to the 

 eastern slopes of the same mountains. 



