17. liASILE UTERUS. 403 



narrowly fringed with dull olive ; bastard-wing and primary-coverts 

 dark sepia-brown ; quills dark brown, edged with duU olive; taU- 

 feathers dark brown, creamy white for the basal half like the rump ; 

 head dark slaty brown, contrasting slightly with the back ; a narrow 

 superciliary line of ashy white ; lores and a streak along the upper 

 part of the ear-coverts dusky black ; upper and under margins of 

 eyelid dull white, the anterior and posterior margins dusky blackish ; 

 feathers below the eye and ear-coverts dusky browu, relieved by 

 very distinct shaft-lines of white ; cheeks duU white, edged with 

 dusky ; throat dull white, uniform ; remainder of under surface of 

 body pale isabelline brown ; the flanks and sides of body brown, 

 darker on the sides of the upper breast ; thighs dark brown ; under 

 tail-coverts paler isabelline ; under wing-coverts and axiUaries dark 

 brown slightly washed with olive, with a few whitish feathers near 

 the edge of the wing ; quills sepia-brown below, ashy brown along 

 the edge of the inner web. Total length 5'3 inches, culmen 0*6, 

 wing 2*6, tail 2-15, tarsus 0*95. 

 Hah. Costa Rica and Nicaragua. 



a. S ad. ; b. S juv. Costa Rica {Carmiol). Sclater Collection. 



sk. (Types of species.) 



c. Juv. sk. Tucurriqui, Costa Rica, Salviai-Godmau CoU. 



Oct. {Arce). 



Subsp. a. Basileuterus veraguensis. 



Basileuterus uropygialis (jion ScL), Scl. 8f Salv. P. Z. S. 1864, p. 347 ; 



Baird, Revietv Amer. B. p. 246 (1865) ; Scdv. P. Z. S. 1867, p. 136, 



1870, p. 183 ; id. Ibis, 1872, p. 313. 

 Basileuterus semicervinus {nee Scl.), Lawr. Ann. Lye. N. Y. vii. 



p. 322 (1861). 

 Basileuterus leucopygius, Salv. ^ Godm. Biol. Centr.-Amer., Aves, i. 



p. 172 (1881, pt.). 



Adult. General colour above uniform dark brown washed with 

 olive ; lesser wing-coverts like the back ; median and greater series 

 blackish, narrowly edged with dark olive, a fringe of clearer olive 

 being seen at the tips of the median coverts; bastard-wing and 

 primary-coverts uniform dark brown ; quills blackish brown, exter- 

 nally edged with olive-brown ; lower rump, upper tail-coverts, and 

 base of tail clear fawn-buff, the terminal half of the tail dark brown, 

 the feathers edged narrowly with olive ; head dusky olive-brown, 

 more dingy than the back, with which it contrasts slightly ; a nar- 

 row rufescent eyebrow ; lores and ear-coverts dusky brown, the 

 latter streaked with fawn-coloured shaft-lines ; cheeks and under 

 surface of body pale fawn-colour, lighter on the abdomen and deep- 

 ening on the under tail-coverts ; sides of the body and thighs brown, 

 the feathers of the chest also slightly mottled with brown edges ; 

 axiUaries and under wing-coverts dusky brown washed with oHve ; 

 quills dark brown below, lighter along the edge of the inner web. 

 Total length 5 inches, culmen 0-6, wing 2-45, tail 2, tarsus 0-85. 



Hah. Yeragua and Panama. 



2d2 



