30. THRYOrHILUS. 213 



birds certainly do secra a littlo more grey on the flanks, but there 

 are others wliich do not differ in the least from specimens of South 

 America, and it is therefore not possible to draw a lino between 

 them. A good deal of the grey shade below seems to be a relic of 

 the immature ])lumage, as we find the young birds very grey under- 

 neath ; while it is equally certain that white-breasted birds from 

 Guatemala are not to be told from those of South America. 



The Eufous-and-Whito Wren inhabits Guatemala in Central Ame- 

 rica, whence it extends to Colombia, Venezuela, and Trinidad. 



a. Ad. sk. Trinidad. Purchased. 



b. Ad. .sk. [Cayenne.] Zoological Society. 



c. Ad. sk. A'enezuela. Purchased. 



d. Ad. sk. Paraiso station, Isthmus of O. Salvin, Esq. 



Panama {A. Ilughes). 



e. Ad. sk. Costa Rica. Mr. Van Patten [C.J. 



/. Imm. sk. Retaluleu, Guatemala. Osbert Salvin, Esq. [C.]. 



y. Ad. sk. Calobre, 'N'eragua. Mr. E. Arce [C.]. 



10. Thryophilus sinaloa. 



. Thryophilus sinaloa, Baird, lie view Amer. Birds, p. loO; Lmor. 3Iem. 

 Bost. Soc. Not. Hist. li. p. 268; Salv. S,- Godm. Biol. Centr.-Amer., 

 Aves, i. p. 83. 

 Troglodytes sinaloa, Gray, Hand-l. B. i. p. 190, no. 2598. 



Adait male (Mazatlan, June 1862 ; A. J. Graj^son). General colour 

 above reddish brown ; wing-coverts like the back, Avith remains of 

 light spots and darker bars on the median and greater series ; bastard 

 wing-feathers externally edged with bufty white ; i)rimary-coverts 

 and quills brown, externally reddish brown, distinctly barred with 

 darker brown, these bars being more distinct on the inner secon- 

 daries ; upper tail-coverts lighter rufous than the back ; tail-feathers 

 light rufous, barred across with blackish brown, eight or nine bars 

 being discernible on the tail ; a distinct white eyebrow reaching 

 from tho base of the bill to the side of the nape ; sides of neck 

 brown streaked with white ; ear-coverts dull white, slightly streaked 

 with dusky brown, with which the feathers are edged ; the upper 

 edge of the car-coverts brown, forming a distinct streak; throat, 

 breast, and abdomen white, the sides of the body brown, slightly 

 reddish in tint ; tho sides of the upper breast ashy grey ; under tail- 

 coverts white or fulvous, distinctly barred with black cross lines ; 

 under wing-coverts and edge of wing white ; axillaries light fulvoiis 

 brown ; quills dusky brown below, ashy along the edge of the inner 

 web. Total length 5-2 inches, culmen 0-65, wing 2*15, tail 2, 

 tarsus 0"8. (Mas. Salvin and Godman.) 



The Sinaloa Wren replaces T. rufaJbns in Western Mexico. 



11. Thryophilus pleurostictus. 



Tbrvothorus pleurostictus, Sclafer, Ibis, 18G0, p. 30; id. Cat. Amer. 

 B. p. 21, pi. 4; Sd. 4- Sah. P. /.. S. 1870, p. 551; Laicr. Bull. 

 U.S. Xaf. Mus. no. iv. p. 13. 



