17. BASILETJTEETJS. 391 



and centre of breast and abdomen bright yellow, more brilliant on 

 the latter and a little duller on the vinder tail-coverts ; sides of 

 breast and flanks washed with olive-green ; thighs ashy olive ; axil- 

 laries and luider wing-coverts dull olive-yellow, ashy at the bases, 

 the edge of the wing bright yellow ; quills dusky below, ashy along 

 the edge of the inner web : " bill black ; feet pale brownish ; iris 

 dark brown " (Jehl-i). Total length 6-2 inches, culmen 0'55, wing 

 2-75, tail 2-6, tarsus 1. 



Adult female. Similar to the male, but rather more olive-brown 

 on the upper tail-coverts and tail. Total length 5*5 inches, culmen 

 0-55, wing 2-75, tail 2-5, tarsus 0-95. 



The specimens from Ecuador and Peru have the under tail-coverts 

 deeper coloured and washed with saffron-yellow. 



In one specimen from Eogota the coronal chestnut feathers are 

 tipped with ashy, probably remains of winter plumage. 



JIab. From Colombia to Ecuador and Peru, 



a. Ad. sk. Bogota. Salvin-Godman Coll. 



b, c, Ad. sk. Bogota. Sclater Collection. 



d. Ad. >>k. Med>:'\\m (T. K. Salmon). Salvin-Godman Coll. 



e. 5 ad. sk. Santa Elena, Antioquia Salvin-Godman Coll. 



{T.K.S.). 



f. (S ad. sk. Antioquia {T. K. S.), Sclater Collection. 



g. 2 ad. .sk. Antioquia. T. K. Salmon, Esq. [C.]. 

 h. Ad. sk. Ecuador ( C. Buckky). Salvin-Godman Coll. 

 i,k. Ad.sk. Jima, Ecuador (C. i'McA;fey). Salvin-Godman Coll. 



I. c? ad. sk: Pallatanga, Ecuador, Sept. Sclater Collection. 



{Fraser). 

 in. Ad. sk. Auquimarcha, Peru, March Sclater Collection. 



20 (Jelslct). 



17. Basileuterus bivittatus. 



Muscicapa bivittata, D'Orb., Lafr. Sijn. Av. p. .51 (1857). 

 Muscicapara bivittata, U'Orb. Voy. Amer. Merid., Ois. p. 324 (1835- 



1S44). 

 Setopbaga chrysogastra, Tschudi, Arch.f. Nature/. 1844, p. 276 ; Gray, 



Gen. £. i. p. 2(w (]S4()); Bp. Consp. i. p. 313 (I860); Tschudi, 



Faun. Peruan. p. 192 (1855) ; Gray, Iland-l. B. i. p. 245, no. 3548 



(1869). 

 Trichas bivittatus. Gray, Gen. B. i. p. 197 (1840). 

 Setophaga bivittata, Gray, Iland-l. B. i. p. 244, no. 3542 (1809). 

 Basileuterus diachlorus, Cab. J. f. O. 1873, p. 316; Tacz. P. Z. S. 



1874, p. 509 ; Scl. 4" Salv. P. Z. S. 1879, p. 694. 

 Basileuterus bivittatus, Tacz. Orn. Perou, p. 473 (1884). 



Adult (Monterico, Peru ; Stolzmann). General colour above dark 

 olive-yellow, a trifle clearer on the rump and upper tail-coverts ; 

 lesser wing-coverts like the back ; median and greater wing-coverts, 

 bastard-wing, primary-coverts, and quills externally washed with 

 the same colour as the back, the margins to the primaries brighter 

 olive-yellow ; tail-feathers dusky ash-brown, edged with olive-yellow ; 

 crown of head pale orange-rufous, obscured by a wash of olive, the 

 bases of the feathers yellow, especially distinct ou the forehead ; on 



