620 BULLETIN 50, UNITED STATES NATIONAL MUSEUM. 



NANNORCHILUS LEUCOGASTER MUSICUS (Nelson). 

 PALEHaUE WREN. 



Similar to JSf. I. Leucogaster but decidedly darker, the upper parts 

 (in spring and summer plumage") deep russet brown (between raw- 

 umber and prouts brown), the flanks deep isabella color or wood brown. 



Adalt male.— 'Length (skins), 90-99 (94.5); wing, 50-52 (51); tail, 

 28-29.5 (28.7); exposed culmen, 13; tarsus, 18-19 (18.5); middle toe, 

 11-11.5 (11.2).« 



Southern Mexico, iu States of Tabasco (Teapa) and Chiapas (Palenque) 

 and adjacent parts of Guatemala. 



Hemiura leucogastra musica Nelson, Proc. Biol. Soc. Wash., xvi, Nov. 30, 1903, 

 159 (Teapa, Tabasco; coll. U. S. Nat. Mus.). 



NANNORCHILUS LEUCOGASTER BRACHYURUS (Lawrence). 

 TEMAX WREN. 



Similar to JI. I. leucogastra, but bars on tail very much more distinct 

 (both darker in color and more sharply defined), and under tail-cov- 

 erts whitish distinctly barred with dusky. 



Adidt male.— 'Length (skins), 90-101 (96); wing, 46.5-52 (50.1); tail, 

 29.5-33 (31.5); exposed culmen, 13-14.5 (14); tarsus, 17.5-19.5 (18.9); 

 middle toe, 11-12.5 (11.7).» 



Adult fe?nale.— Length (skins), 87-97 (91); wing, 46^9.5 (47.9); tail, 

 25.5-30 (28.1); exposed cuhtfen, 12-13.5 (13); tarsus, 17.5-19.5 (18.7); 

 middle toe, 10.5-12 (11.2).'^ 



Yucatan (Temax; Chichen-Itza; Tunkas; Puerto Morelos) and Cam- 

 peche (Apazote; Campeche). 



Troglodytes brachyurus Lawrence, Ann. N. Y. Acad. Sci., iv, no. 2, June, 1887, 



67 (Temax, Yucatan; coll. G. N. Lawrence. 

 Hemiura brachyura Chapman, Bull. Am. Mus. N. H., viii. Bee, 11, 1896, 277 



( Chichen-Itza, Yucatan ) . 



Genus THRYOPHILUS Baird. 



Thryophilus Baird, Review Am. Birds, Aug., 1864, 127. (Type, Thryothorus 

 rufalbus Lafresnaye. ) 



Medium sized to rather small Troglodytidse (wing 51-76 mm.) 

 resembling Pheugopedkis, but with bill distinctly notched, and nostril 

 small, roundish or oval, nonoperculate, opening into anterior end of 

 nasal fossa. 



Bill usually shorter than head, compressed anterior to nostrils, its 

 depth at latero-frontal antite equal to much less than half (sometimes 



oTwo specimens, one from Tabasco the other from Chiapas; an adult from Guate- 

 mala (sex not determined and exact locality unknown) is precisely similar in 

 coloration. 



6 Ten specimens. 



'■ Seven .specimens. 



