y^O PATAGONIAN EXPEDITIONS: ZOOLOGY. 



The birds of this icind collected by the Princeton naturalists indicate a 

 species resident about the Straits of Magellan and breeding in Novem- 

 ber in the vicinity of Punta Arenas. The birds seem largely littoral in 

 their distribution, though Mr. Hatcher and his assistants procured a sin- 

 gle example at the headwaters of the Rio Chico de Santa Cruz. 



December specimens from Punta Arenas are much worn while one 

 from Chebunco, January, is half through the moult. The Rio Chico speci- 

 men is in Juvenal plumage, much browner on the breast and with the 

 upper tail coverts edged with ashy brown. 



T/ENIOPTERA MURiNA (Lafrcsuaye and d'Orbigny). 

 Pepoaza murina Lafresnaye and d'Orbigny, Syn. Av. p. 63 (1837) (^io 

 Negro, Patagonia). 



Description. — Adult male, 237168 U. S. National Museum Colin., 

 Mendoza, Argentina, September, 1908, Carlos S. Reed. Total length, 

 7.30 inches; wing, 3.85; culmen, .60; tail, 3.10; tarsus, 1.08. Above 

 ashy brown (between drab and hair brown of Ridgway); wings blackish 

 bordered with buffy white ; tail black tipped with buffy white and entire 

 outer web of outermost pair of feathers the same ; below pale buffy or 

 ashy, becoming nearly pure white on the abdomen, a dusky malar stripe 

 on each side of the throat and black streaks below the ear coverts ; lores 

 pale buffy, the color extending over and under the eye ; bill dark horn 

 color, lower mandible lighter at base ; feet black. 



Geographical Range. — Southern Bolivia, Argentina and northern Pat- 

 agonia (Rio Negro). 



Mr. Peters secured one at San Antonio which was hopping about on 

 the ground acting precisely like Upncerthia dumetaria. 



It does not range into the country covered by the Princeton expeditions. 



T/ENiopTERA RUBETRA Burmcister. 



Tcenioptera rubetra Burmeister, J. f. O. i860, p. 247 (Mendoza). 



Description. — Adult male, 283827 Biol. Survey Colin., U. S. Depart- 

 ment of Agriculture, Zapala, Neuquen, Argentina, December 7, 1920, 

 Alexander Wetmore. Total length, 7.15 inches; wing, 4.70; culmen, 

 .58; tail, 3.02; tarsus, 1.16. Above ochraceous tawny, feathers with 

 dusky shaft streaks, crown deeper tawny ; lores, superciliaries and under 

 eyelid pure white, a dusky area before the eye and a tawny brown post- 



