578 



BULLETIN 50, UNITED STATES NATIONAL MUSEUM. 



and Barranca, Costa Eica).— Boucard, Proc. Zool. Soc, Loud., 1878, 51 (San 

 3os&, Cartago, andNaranjo, Costa Rica). — Salvin and Godman, Biol. Centr.- 

 Am., Aves, i, 1880, 100, part.— Sharpe, Cat. Birds Brit. Mus., vi, 1881, 252, 

 part (Chon tales, Nicaragua; Irazii distr., Tucurrique, Barranca, and San Jos6, 

 Costa Rica) .— Zeledon, Proc. U. S. Nat. Mus., viii, 1885, 105 (Costa Rica); 

 Anal. Mus. Nao. Costa Rica, i, 1887, 106 (San Jos6, Santa Maria de Dota, 

 Monte Redondo, and Cartago, Costa Rica). — Cherrie, Auk, viii, 1891, 275 

 (localities in Costa Rica; habits; descr. nest and eggs; crit.; measurements, 

 etc.).— Richmond, Proc. U. S. Nat. Mus., xvi, 1893, 483 (Rio Escondido, 

 Nicaragua; habits). 



ITroglodyles] inle.rmediu8 Gray, Hand-list, i, 1869, 191, no. 2617. 



T[roglodyies] intermedius Ridgway, Man. N. Am. Birds, 1887, 554, part. 



Troglodytes furvus intermedius Ridgway, Proc. U. S. Nat. Mus., x, Aug. 6, 1888, 

 585 (Segovia R., Honduras). 



Troglodytes musculus intermedius Oberholsee, Proc. U. S. Nat. Mus., xxvii, no. 

 1354, Jan. 23, 1904, 205 (crit.). 



Troglodytes in(juielus (not of ,Baird) Lawrence, Ann. Lye. N. Y., ix, 1868, 93 

 (Costa Rica) . 



Troglodytes furvus (not Motacilla furva Gmelin) Zeledon, Cat. Aves de Costa 

 Rica, 1882, S. 



TROGLODYTES MUSCULUS HYPAEDON (Sclater). 

 OAXAOA HOUSE WEEN. 



Similar to T. m. intermedius, but upper parts deeper and more red- 

 dish brown, under parts slightly deeper in color (especially on flanks), 

 and size slightly smaller. 



Adult ma^e.— Length (skins), 98-111 (105); wing, 47-54 (48.6); tail, 

 35-40 (37); exposed culmen, 12.5-13.5 (12.9); tarsus, 17-19 (18); middle 

 toe, 12-14 (12.4)." 



Adult female.— \je,^gt\i (skins), 100-113 (105.2); wing, 47-50 (48); 

 tail, 34-40 (36.8); exposed culmen, 12-12.5 (12.3); tarsus 18; middle 

 toe, 12-13 (12.7).* 



« Twelve specimens. 



6 Six specimens. 



Specimens from Yucatan compare in average measurements with those from Chia- 

 pas as follows; average measurements of Costa Rican specimens {T. i. uitermedius) 

 being given for further comparison : 



Locality. 



Middle 

 toe. 



MALES. 



Nine adult males from Costa Rica ( T. i. intermedius) . . . 



Seven adult males from Chiapas 



Five adult males from Yucatan 



FEMALES. 



Three adult females from Costa Rica ( T. i. intermedius) 



Four adult females from Chiapas 



Two adul t females from Yucatan 



13.3 

 12.7 

 12 



12.7 



13 



12.7 



The difference in coloration between specimens frorii southern Mexico and those 

 from Costa Rica is exceedingly slight and may prove inconstant. 



