588 BULLETIN 50, HNITED STATES NATIONAL MUSEUM. 



TROGLODYTES BRUNNEICOLLIS NITIDUS Nelson. 

 ZEMPOALTEPEC WREN. 



Similar to T. h. h'unneicoUis, but decidedly deeper in color, the 

 under parts, even in faded midsummer plumage, deeper, and more 

 extensively bufly cinnamon. Young with entire under parts buffy 

 cinnamon, deepening into cinnamon-brown on flanks. 



^(^^^^^!»^afe.— Length (skins), 110-113 (111.5); wing, 60; tail, 40-42.5 

 (41.2); tarsus, 18-20 (19); middle toe, 12-13 (12.5)." 



Dense humid forests of Mount Zempoaltepec, Oaxaca. 



Troglodytes brunneicollis niiidus Nelson, Proc. Biol. Soc. Wash., xvi, Nov. 30, 

 1903, 158 (Mount Zempoaltepec, Oaxaca, 6,500 ft.; coll. IT. S. Nat. Mus.). 



TROGLODYTES BRUNNEICOLLIS CAHOONI (Brewster). 

 CAHOON'S WREN, 



Similar to T. i. hrunneicollis, but paler, the chest, etc. , dull cream 

 buff (in midsummer) to pale cinnamon or cinnamon-buff (in winter), 

 with flanks usually less heavily barred, the brown of upper parts 

 grayer. 



Adult male.— Length (skins), 104-118 (111); wing, 49-54 (51.7); 

 tail, 40-47 (43.7); exposed culmen, 12-14 (12.8); tarsus, 18-18.5 (18.1); 

 middle toe, 12-13 (12. 7). "^ 



Adult female.— Length (skins), 104-121 (113); wing, 48-52.5 (50); 

 tail, 39.5-47 (42.4); exposed culmen, 12-14 (13); tarsus, 15.5-18 

 (17.6); middle toe, 11.5-13 (12.5).^ 



Northern portion of Mexican plateau, in States of Sonora (moun- 

 tains near Oposura; Bavispe River), Chihuahua (Colonia Garcia; 

 near Guadalupe Calvo; Pinos Altos; Bravo; Jesus Maria), Coahuila 

 (Sierra Guadalupe), Nuevo Leon (Monterey), Tamaulipas (Miqui- 

 huana), Durango (El Salto), and Jalisco (near Bolanos; Sierra Bolaiios; 

 Sierra Madre Nayarit). 



Troglodytes cahooni" Brewster, Auk, v, Jan., 1888, 94 (mountains near Oposura, 



Sonora, n. w. Mexico; coll. VV. Brewster). 

 Troglodytes brunneicollis cahooid Oberholser, Proc. U. S. Nat. Mus., xxvii, no. 



1354, Jan. 23, 1904, 200 (crit.). 



TROGLODYTES RUFOCILIATUS Sharpe. 

 RTJFOUS-BROWED WREN. 



Adidts {sexes alike). — Pileum and hindneck plain deep brown 

 (between mummy brown and prouts brown); rest of upper parts simi- 

 lar but more or less distinctly barred with dusky; outer webs of exte- 



«Two specimens; both have the tip of the maxilla broken off. 



^ Ten specimens. 



c "To J. C. Gaboon, of Taunton, Mass." 



