•758 PATAGONIAN EXPEDITIONS: ZOOLOGY. 



sus, I. GO. Above vinaceous brown exactly as in G. cuniciilaria cimicit- 

 laria except that the rump is uniform with the back ; below vinaceous 

 buff ( "avellaneous" of Ridgway), darker than in G. cuniciilaria amicu- 

 laria and without the dark spots across the breast ; under wing coverts 

 and feathers of the side beneath the wing mahogany red ; chestnut areas 

 on wing and tail much brighter than in G. c. cniiicularia ("burnt sienna" 

 of Ridgway), outer web of outermost tail feathers the same, dark areas de- 

 cidedly blacker and secondaries, primaries and rectrices tipped with pale 

 buff, pale edgings on upper wing coverts and secondaries obsolete ; a dis- 

 tinct buffy white superciliary stripe. 



Geographical Range. — Bolivia and Argentina south to El Escorial, 

 Huanuluan and Talagapa, Patagonia, where it was found by Peters. 



This species was not found by the Princeton Expedition, as it ranges 

 only to northern Patagonia. Mr. Peters, who found it at Huanuluan, 

 El Escorial and Talagapa, states that "in actions it is precisely like 

 the preceding species (i.e. G. cunicularia cnnicularia), but is markedly 

 larger; the V-shaped mark on the tail is chestnut and the under wing 

 coverts a rich brown. Moreover it is invariably found in rocky situations, 

 whereas G. c. cunicularia frequents the dry sandy plains (Bull. M. C. 

 Z. Ixv. no. 9, p. 312). 



Genus UPUCERTHIA, Geoffroy St.-Hilaire. 



Type. 



Upucerlhia Geoffr. St.-Hil. N. Ann. d. Mus. i. p. 393 (1832) U. dumetaria. 

 Geographical Range. — Peru, Bolivia, Ecuador and Chili ; Argentina 

 and Patagonia, to the Straits of Magellan. 



Upucerthia dumetaria dumetaria Geoffroy St.-Hilaire. 

 (Plate IV) 

 Upucerthia dumetaria Geoffroy St.-Hilaire, N. Ann. Mus. Hist. Nat. p. 

 394, 1832 (Patagonia). 



Description. — Male adult, P. U. O. C. 7940, Rio Chico, Patagonia, March 

 12, 1896, A. E. Colburn. Total length, 9.00 inches ; wing, 4.05 ; culmen, 

 1.28; tail, 2.95; tarsus, .98. Above uniform wood brown, feathers of the 

 crown with obscure lighter centers; lores dull white, superciliary stripe vin- 

 aceous, ear coverts streaked with buffy white and dusky ; under parts dull 

 white tinged with vinaceous, strongly so across the breast, which is pale cin- 



