74. MYIARCHUS. 259 



q. Ad. sk. Merida, Venezuela (Goering). Sclater Coll. 



r. Ad. sk. San Esteban, Venezuela Sclater Coll. 



{Hanke). 



s. rf ad.sk. Venezuela {Goering). Sclater Coll. 



t. rf ad. ; it-w. Roraima, British Guiana Salvin-Godnian Coll. 



$ ad. sk. {Whitely). 



x. 3 ad. sk. Yquitos, Upper Amazons Salvin-Godman Coll. 



( Whitely). 



y. Ad. sk. Yquitos, Peru ( Wliitely). Sclater Coll. 



16. Myiarchus atriceps. 



Myiarchus atriceps, Cab. J. f. 0. 1883, p. 215 ; Scl. et Huds. Arg. 



Orn. i. p. 157. 

 Myiarchus nigri'ceps, Scl. et Salv. P. Z. S. 1879, p. 616 (Bolivia). 

 Tyrannus tubercidifer, d'Orb. etLafr. Syn. i. p. 43 ; cTOrb. Voii., Ois. 



p. 307, t. xxxii. figs. 1, 2 (?). 



Similar to M. nigriceps, but larger in size : whole length 7 inches, 

 wing 3-7, tail 3-5. 



Hob. Northern Argentina, Bolivia, and Southern Peru. 



D'Orbigny's Tyrannus tubercidifer, of which I have examined 

 specimens in the Paris Museum, belongs either to this species or to 

 M. tricolor. The slight spine at the bend of the wing, alluded to in 

 d'Orbigny's name, is found more or less developed in many species 

 of Tyrannidse. 



a. Ad. sk. Cachupata, Peru ( Whitdy). Sclater Coll. 



b. Ad. sk. Cachupata, Peru ( Whitely). Salvin-Godman Coll. 



c. Ad. sk. Tilotilo, Yungas, Bolivia {Buckley). Salvin-Godman Coll. 



d. Ad. sk. Interior of Bolivia [Bridges). Salvin-Godman Coll. 



e. Ad. sk. Interior of Bolivia. T. Bridges [C.]. 

 /. $ ad. sk. Tucuman, rep. Arg. (Schulz). Sclater Coll. 



(Authentic specimen.) 



17. Myiarchus tricolor. 



Myiarchus tricolor, Pelz. Orn. Bras. pp. 117, 182; Berl. Ibis, 1883, 



p. 139. 

 Myiarchus gracilirostris, Pelz. Orn. Bras. pp. 117, 183. 



Above dark greyish with a slight olivaceous tinge : crown black- 

 ish ; wings and tail blackish ; wing-coverts and outer secondaries 

 with slight margins of dirty white : beneath, throat and neck pale 

 grey ; abdomen and under wing-covcrts pale sulphur-yellow ; bill 

 dark horn-colour ; feet black : whole length 6 - 3 inches, wing 3, 

 tail 2-8. 



Hub. Brazil. 



This is a close ally of 31. nigriceps, and only distinguishable by 

 its darker back and head not so dark. It appears to be M. tricolor 

 of Pelzeln, as considered by Graf v. Berlepsch. It would be more 

 satisfactory to have a better series for comparison. 



a. Ad. sk. Iiio Tocantins, Brazil {Wallace). Sclater Coll. 



b. Ad. sk. Bahia, Brazil ( Wucherer) Salvin-Godman Coll. 



s2 



