404 MNIOTILTID^, 



a. 2 imm. sk. Bugaba, Chiriqui (U. Arce). Salvin-Godman Coll. 



h. (S ad. sk. Sauta Fe, Veragua. Salvin-Godmau Coll. 



c,d. (5' 5 ad. sk. Panama {McLecmnaii). Salvin-CTodman Coll. 



c. Ad. sk, Paraiso Station, Panama Purchased. 



{Hughes). (Type of species. ) 



32. Basileuterus semicervinus. 



Basilcuterus semicervinus, Sd. P. Z. S. 18U0, pp. 84, 291 ; id. Cat. 



Amer. £. p. 3-5 ; id. P. Z. S. 18G5, p. 285, pi. 10. tig. 1 ; Sd. <^- Salv. 



Nomend. Av. Neotr. p. 10 (1873) ; Beiiepsch i^ Tacz. P. Z. S. 1883, 



p. 541. 

 Setophaga semicervina, Gray, Iland-l. B. i. p. 244, no. 3540 (1869). 



Adult male (type of species). General colour above very dark 

 olive-brown, the rump and upper tail-coverts very deep fawn-colour 

 like the base of the tail ; wing-coverts like the back ; the bastard- 

 wing and primary-coverts dark sepia-brown, the latter obsoletely 

 fringed with olive ; quills dark sepia, washed externallj' with olive ; 

 tail fawn-colour, with a band of dark brown occupying about the 

 terminal third and decreasing towards the outermost feathers, which 

 are tipped with pale fawn-colour and have the caudal band incom- 

 plete ; crown of head dark slate-colour, contrasting with the back ; 

 a fawn-coloured superciliary streak from the base of the nostrils to 

 above the hinder part of the eye ; upper and under margin of eyelid 

 and feathers below the eye deep fawn-colour ; lores, as well as the 

 anterior and posterior margins of the eyelids and a mark behind 

 the eye, dusky blackish ; ear-coverts dark brown, with narrow fawn- 

 coloured shaft-lines ; cheeks and under surface of body fawn-colour, 

 deeper on the flanks and under tail-coverts and thighs ; the centre 

 of the breast and abdomen somewhat white ; axillaries brown, like 

 the sides of the breast ; under wing-coverts deep fawn-colour ; quills 

 dusky brown below, ashy along the edge of the inner web. Total 

 length .') inches, culmen 0*55, wing 2-55, tail 2-15, tarsus 0-9. 



Adult female. Not to be distinguished from the male. Total 

 length 4'S inches, culmen 0*55, wing 2-4, tail 1*95, tarsus 0'85. 



The typical specimens have the caudal band dark brown, and 

 when compared with B. uropygialis look distinct enough at first 

 sight, the paler colour of the base of the tail, the evident olive 

 colour on the terminal band, and the lighter under surface suffi- 

 ciently distinguishing the latter species. Specimens from Antioquia 

 and Bogota (mus. Salvin and Godman) are strictly intermediate in 

 these points, and possess the darker under suiface of B. semicervinus 

 with almost as much olive on the caudal band as in B. uropy- 

 gialis. Examples from the Peruvian Amazons again are lighter 

 underneath, and approach the last-named species in the distinct 

 olive caudal band, but in the fawn-coloured eyebrow and base of tail 

 they approach B. semicervinus. 



Hah. Ecuador and Colombia. 



a,b. (S '2 ad. sk. Nanegal, Ecuador, Feb. Sclater Collection. (Types 

 [^L, Fraser). of species.) 



