17. BASILETTTERTJS. 393 



Total length 5 iuches, culmen 0-55, wing 2*5, tail 2-25, tarsus 

 0-85. 



Hah. British Guiana. 



a,b. c? $ ad. sk. Roraima, December (if. Sclater Collection. 



Whitehj). 



c,d. (S •'id- sk. Roraima,' Dec. {H. W.). Salvin-Godman Coll. 



e, f- d 2 ''id. sk. Roraima, Jan. (H. W.). Salvin-Godman Coll. 



ff.' d' ad. sk. Roraima, Aug. 10 (ff. W.). Salvin-Godman Coll. 



h. cJ ad. sk. Merume Mountains, July 5 Salvin-Godman Coll. 



(H. jr.). 

 19. Basileuterus auricapillus. 



Contramaestre coronado, Azara, Apunt. ii. p. 414 (1802). 

 Sylvia vermivora, Vieill. N. Diet. d'Hist. Nat. xi. p. 278 (1817, pt.). 

 Muscicapa vermivora, Lafr. ^ D'Orb. Si/71. Av. p. 51 (18.37). 

 Setopliaga aurocapilla, Swains. An. in Menag. p. 293 (1837) ; Oray, 



Gen. B. i. p. 26,5 (184G). 

 Muscicapara vermivora, D'Orb. Voy. Amer. Merid., Ois. p. 324 



(183.5-44). 

 Helinrea vermivora, Hartl. Ind. Azar. p. 10 (1847). 

 Basileuterus vermivorus, Cab. in. Schomh. Rets. Guian. iii. p. 667 



(1848); id. Mus. Hein. i. p. 17 (1850); Bjy. Consp. i. p. 313 



(1850); Bnnn. Thiere Bras. iii. p. 113 (18.56); Scl. P.Z.S. 185.5, 



p. 144 ; id. Cat. Amer. B. p. 34 (1862) ; id. P. Z. S. 1865, p. 283; 



Baird, Revieio Amer. B. p. 243 (1865); Scl. l^- Sal v. Nomencl. Av. 



Neotr. p. 10 (1873) ; White, P. Z. S. 1882, p. 594. 

 Setophaga vermivora. Gray, Handr-l. B. i. p. 244, no. 3540 (1869). 



Adult. General colour above olive-yellow, a little lighter yellow 

 on the rump and upper tail-coverts ; lesser wing-coverts like the 

 back ; median and greater coverts dusky, margined with olive- 

 yellow ; bastard-wing dusky, externally ashy olive ; primary-coverts 

 and quills dusky, edged with olive-yellow, more ashy on the margins 

 of the primaries ; tail-feathers ashy brown, with olive-yellowish 

 margins ; crown of head light orange-chestnut, obscured by ashy- 

 grey tips to the feathers, the nape and hind neck pale ashy grey; on 

 each side of the crown a broad stripe of black from the base of the bill 

 to the hind neck : a distinct streak of ashy whitish above the eye ; 

 lores, anterior and posterior margins of eyelid, and upper edge of 

 ear-coverts dusky blackish ; upper and under edge of eyelid white ; 

 sides of face and ear-coverts ashy grej' ; base of chin and cheeks 

 ashy whitish, margined above by a line of dusky blackish ; under 

 surface of body brilliant yellow ; sides of body olive-green ; axil- 

 laries and nnder wing-coverts white, those near the edge of the wing 

 yellow ; quills dusky below, ashy whitish along the edge of the 

 inner web : " bill brownish ; legs fleshy brown " (Burmeister). Total 

 length 4-5 inches, culmen 0-5, wing 2-2, tail 2-0-5, tarsus O'T. 



Ohs. "With the exception that the birds from the northern part of 

 the South-American continent are rather darker and more olive- 

 brown, I cannot see any reason for their separation from Brazilian 

 B. auricapiUi(s. The specimens from Trinidad are again a little 

 more ashy. 



