■782 PATAGONIAN EXPEDITIONS: ZO6LOGY. 



in length. The nest is composed entirely of thick sticks, and is so com- 

 pactly built that I had hard work to demolish one by thrusting the barrel 

 of a long musket into it and prizing it up by pieces. I also, to test the 

 strength of a nest, stood on one for some time, stamping my heel on it 

 with great force, without injuring it in the least." (P. Z. S. 1872, p. 545.) 



Subfamily Margarornithin^. 



Cf. Salvin & Godman, Biol. Centr. Amer., Aves, ii. p. 109 (1891); 

 Sharpe, Hand-List Bds. iii. p. 73 (1901). 



Genus PYGARRHICUS Burmeister. 



Type. 



Pygarrhictis Burm. Handb. d. Nat. p. 769 (1837) . . P. albigitlaris. 

 Geographical Range. — Wooded regions of southern Tierra del Fuego, 

 northward through the forests of southern and central Chili ; the Island 

 of Chiloe ; the forests of southern and western Patagonia. 



Pygarrhicus albigularis (King). 



Dendrocolaptes albigitlaris King, P. Z. S. 1830, p. 30 (Straits of Magellan). 

 Dendrodramiis leucosternus Gould, Voy. Beagle, Birds, p. 82, pi. 27 



(1841) (Chiloe and southern Chili). 

 Pygarrhicus sitellus Lichtenstein, Nomencl. Av. Mus. Berol. p. 64 (1854) 



(Chili). 

 Description. — Adult female, P. U. O. C. 7626, Punta Arenas, Chili, 

 December 27, 1897, J. B. Hatcher. Total length, 5.62 inches; wing, 

 3.18; culmen, .80; tail, 2.05; tarsus, .82. Above dark brown ("mummy 

 brown" of Ridgway) on head and back passing into chestnut and bright 

 rufous on rump and tail ; wings dark brown with rufous edgings to the 

 secondaries and coverts with a rufous area on the outer web of the inner 

 primaries near the base; tail feathers rigid and with protruding spine- 

 like tips. Under parts snowy white on throat, chest and sides of neck, 

 middle of body white, each feather narrowly edged with brown, making 

 a shell pattern, sides of body and flanks chestnut brown ; under tail cov- 

 erts brown tinged with rusty and each feather centered with white ; bill 

 somewhat upturned, lower mandible largely yellow. 



Geographical Range. — Chili and western Patagonia to Straits of Ma- 

 gellan and Chiloe Island. 



