432 REVIEW OF AMERICAN BIRDS. [PART I. 
Myiadestes leucotis. 
Ptilogonys leucotis, Tscu. Arch. Nat. 1844.—Is. Fauna Peruana, 1846-75 
139, pl. vii, fig. 1. Hab. Peru.—Myiadestes leucotis, Cas. Arch. 
Nat. 1847, I, 209. 
Hab. Peru. 
(No. 41,908, Peru.) Above cinnamon brown; the top of head and entire 
under parts black, except the flanks, which are like the back, and a patch on 
Mytadestes leucotis, Cab. 
Myiadestes leucotis, CAB. (Peru.) 
‘the sides of breast under the wing, which is white ; the cheeks also are white. 
The quill- and tail-feathers are sooty black, even including the shafts; the 
innermost secondaries not so dark, and like the wing coverts, washed ex- 
ternally with cinnamon. Exposed upper surface of central tail feathers tinged 
with a faint shade of cinnamon, the terminal half of outermost, and a large 
patch in the end of next, grayish-white. The axillars, inner wing coverts, 
and a quadrate patch at base of inner web of all the quills, except the Ist 
primary and innermost secondaries, white, the color reaching to the shaft, but 
not visible externally. Upper mandible and legs black; lower mandible yel- 
low. “Iris fiery red’? (Tschudi). 
Wings rather shorter than the tail, considerably rounded ; the first primary 
large and broad, not faleate, about half the 2d, which about equals the 8th; 
the 4th and 5th longest. Tail somewhat graduated, the feathers acute and 
acuminate at tips; the outer tapering from about its middle. Bill lengthened ; 
commissure nearly straight, but slightly sinuated towards base ; nostrils broad 
and open. Legs stout; tarsus about equal to middle toe and claw, without 
distinct scutellar divisions anteriorly except below; a few faint and obsolete 
transverse divisions on outer side. Inner toe separated to base, the basal 
joint of middle toe united for rather more than basal half to outer toe; claws 
all rather large. 
(No. 41,908.) Total length, 9.00; wing, 4.25 ; tail, 4.55, its graduation, .65 ; 
difference of 10th and longest primary, .75; exposed portion of 1st primary, 
1.42, of 2d, 1.75, of longest (4th and 5th) (measured from exposed base of Ist 
primary), 3.30; length of bill from forehead, .74, from nostril, .40, along gape, 
