AVES TYRANNID^. 793 



Genus LICHENOPS Sundevall. 



Type. 



Lichenops Sund. K. Vet.-Ak. Handl. 1835, p. 88 . . L. perspicillata. 

 Geographical Range. — South America, from eastern Bolivia and south- 

 eastern Brazil to Patagonia as far south as 46° south latitude. 



Lichenops perspicillata andina Ridgway. 



Lichenops perspicillafits andinus Ridgway, Proc. U. S. Nat. Mus. i. p. 

 483 (1879) (western South America, Chile to New Granada). 



Description. — Adult male, P. U. O. C. 8969, Province of La Plata, Ar- 

 gentina, May, 1897. Total length, 6.25 inches; wing, 3.60; culmen, .65; 

 tail, 2.45; tarsus, i.io. Uniform black above and below except the outer 

 portion of the wing which is white, six outer primaries white, more or less 

 black at tip and with a black spot at the base of some of them ; this in- 

 creases rapidly on the next three, leaving only a small white area at the 

 tip extending inward along the shaft, next four feathers with a narrow 

 white patch mainly on the outer web; bill yellow; feet black; a light- 

 colored fleshy caruncle around the eye. 



Adult female, P. U. O. C. 8970, Province of La Plata, Argentina, May, 

 1897. Entirely different, above streaked dark brown and buff, under 

 parts buffy white with a few brown shaft streaks across the breast. Wing 

 feathers largely chestnut tipped with dark brown, tertials and coverts dark 

 brown edged with buff; tail dark brown ; bill yellow; feet black; caruncle 

 apparently absent. 



Geographical Range. — Southeastern Bolivia, Rio Negro to Chile and 

 Patagonia. 



The Spectacle Warbler does not appear to enter that part of Patagonia 

 explored by the Princeton Expeditions. 



Mr. Peters found it to be a common summer resident in the Rio Negro 

 region. It arrived at Huanuluan September 6 from farther north, occur- 

 ring along the arroyos and in drier situations where there was a dense 

 growth of Moyi bushes. It is a silent species with an occasional feeble, 

 high-pitched quee (Bull. M. C. Z. Ixv, No. 9, p. 321). 



A. A. Lane states that it "is not uncommon in central Chile about 

 reeds, lagunas and rivers. I did not observe it during the winter season 

 in the province of Arauco ; as I subsequently found it during the warm 

 season about Valdivia in suitable localities. 



