DESCRIPTION OP A NEW MUSCISAXICOLA, PROM LAKE TITI- 



CACA, PERU. 



By ROKERT KIDOWAV. 



Muscisaxicola occipitalis, sp. nov. 



Sp. Char. — Similar to 21. rufivertex D'Orb.j but much browner gray 

 above, upper tail-coverts and tail deep grayisli brown Instead of brown- 

 ish black, and chest much more tinged with grayish. 



Adult (type, No. 99571, Lake Titicaca, Peru; collector unknown): 

 Occiput and i^osterior half of crown cliestnut ; rest of upper parts 

 brownish gray, deeper on wings, upper tail-coverts, and tail; a conspic- 

 uous supraloral stripe of white, involving upper eyelid, but scarcely 

 passing back of the eye ; sides of head and neck light brownish gray, 

 passing into dull grayish white on chin and throat, the chest, sides, and 

 flanks more decidedly grayish, the belly and under tail-coverts nearly 

 pure white. Bill, legs, and feet entirely black. Length (skin) about 

 0.50, wing 4.30, tail 2.85, exposed culmen .GO, tarsus 1.20, middle toe .55. 



A specimen from Ocros, Acayucho, Peru (No. 39917, Oct. 19, 18G4)^ 

 collected by Walter S. Church, is similar in plumage, and measures 

 as follows: Wing 4.50, tail 3.00, exposed culmen .60, tarsus 1.20, middle 

 toe, .52. 



[Proceediugs U. S. National Museum, Vol. X, 1867.] 

 430 



