432 



REVIEW OP AMEKICAN BIRDS. 



[PART I. 



Myiadestes leucotis. 



Ptilogonys leucotis, TscH. Arch. Nat. 1844. — Ib. Fauna Peruana, 1846-7) 

 139, pi. vii, fig. 1. Hah. Peru. — Myiadestes leucotis, Cab. Arch. 

 Nat. 1847, 1, 209. 

 Hah. 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 



Myiadestes levcotir, f^nh 



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 1st 

 primary and innermost secondaries, white, the color reaching to the shaft, but 

 not visible externally. Upper mandible and legs black ; lower mandible yelr 

 low. "Iris fiery red" (Tschudi). 



Wings rather shorter than the tail, considerably rounded ; the first primary 

 large and broad, not falcate, 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 ; clawa 

 all rather large. 



(No. 41,908.) Total length, 9.00 ; wing, 4.25 ; tail, 4.56, 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 1st 

 primary), 3.30 ; length of bill from forehead, .74, from nostril, .40, along gape. 



