588 BULLETIN 50, UNITED STATES NATIONAL MUSEUM. 



TROGLODYTES BRUNNEICOLLIS NITIDUS Nelson. 

 ZEMPOALTEPEC WREN. 



Similar to T. h. hrunnelcoUh^ but decidedly deeper in color, the 

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

 extensively bufl'y cinnamon. Young with entire under parts buffy 

 cinnamon, deepening into cinnamon-brown on flanks. 



Adult male. —\^^\\gt\i (skins), 110-113(111.5); wing, 50; tail, 40-42.5 

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



Dense humid forests of Mount Zempoaltepec, Oaxaca. 



Troglodytei^ hrimneirolUs nilidus Nelson, Pro(!. Bif)l. Soc. Wash., xvi, Nov. 30, 

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



TROGLODYTES BRUNNEICOLLIS CAHOONI (Brewster). 

 CAHOON'S WREN. 



Similar to T. 1>. hrvn^ieicoUls, but paler, the chest, etc., dull cream 

 butf (in midsummer) to pale cinnamon or cinnamon-buti' (in winter), 

 with flanks usuallj^ less heavily ))arred, the brown of upper parts 

 grayer. 



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

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

 middle toe, 12-13 (12.7).« 



Adult female.— l^Qxigth (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 neai" 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 Bolanos; 

 Sierra Mad re Nayarit). 



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



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

 Troglodytes hrunneicollis cahooni Oberholser, Proc. U. S. Nat. Mus., xxvii, no. 



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



TROGLODYTES RUFOCILIATUS Sharpe. 

 RUFOUS-BROWED WREN. 



Adults (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. 



b Ten specimens. 



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



