25. HTLOPHiLrs. 307 



1. Hylophilus thoracicus. 



A. H. thoracicus. 



Hylophilus thoracicus, Temm. PL Col. 173. fig. 1 ; Bp. C. A. i. p. 329 

 Scl. Cat. Am. 5. p. 44; Baird, Rev. Am. B. p. 375; Pelseln, 

 Ornith. Brasil. p. 70 ; Scl. <§• Salv. Nomencl. Av. Neotr. p. 12 ; Scl. 

 Ibis, 1881, p. 207. 



B. H. 2)ectoralis. 



Hvlophilus pectoralis, Scl. P. Z. S. 1866, p. 321 ; Pelzeln, Ornith. 

 'Brasil. p. 70 ; Scl. S,- Salv. Nomencl. p. 12 ; Scl. Pjis, 1881, p. 298. 

 Sylvia thoracica, Prinz Max. Beitr. iii. p. 717 (1831?). 



A. Northern Race (H. thoracicus). 



Centre of crown ashy grej-, passing into olive on the forehead and 

 the sides of the head ; hind neck and nape olive-grey ; rest of upper 

 parts yellowish olive ; wing-coveiis uniform with back, without 

 lighter tips ; chiu, cheeks and throat, abdomen, and under tail- 

 coverts dull reddish ; breast, under wing-coverts, and inner margin 

 of remiges lemon-yellow ; flanks washed with olive-grey ; bill horn- 

 colour; feet brown. Wing 2-3 inches, tail 1-8, tarsus 0-7. 



Immature birds have the whole crown of the head washed with 

 olive. 



Hah. Northern half of South America. 



a. J ad. sk. Bartica grove, British Guiana, 0. Salvin and F. D. God- 

 Oct. •2(11. Whitehj). man, Esqrs. [P.]. 



B. Southern Race (H. pectoralis). 



Birds from the interior of Southern Brazil have the whole crown 

 of the head ashy grey, the flanks more uniform with the breast 

 and not washed with olive. Wing 2-3 inches, tail 1'9, tarsus 0"7. 

 {Sclater.) 



These birds seem to form a brighter-coloured race of H. thoracicus, 

 representing the latter in Brazil. 



2. Hylophilus decurtatus. 



Sylvicola deeurtata, Bp. P. Z. S. 1837, p. 118. 



Pachysylvia deeurtata, Bp. C. A. i. p. 309. 



Hylophilus decurtatus, Baird. Rev. Am. B. i. p. 380 (1864) ; Salv. 



P. Z. S. 1867, p. 137, 1870, p. 184 ; id. Ibis, 1869, p. 313, 1872, 



p. 314; Scl. 8f Salv. P. Z. S. 1870, p. 836 ; Later. Bull. U.S. Kat. 



Mus. No. 4, p. 18; Scl. Ibis, 1881, p. 298; Salv. ^- Godm. Biol. 



Cenfr.-Amer., Aves, p. 206. 

 Hvlophilus cinereiceps, Scl. <§- Salv. P. Z. S. 1860, p. 299, 1864, p. 384 ; 



'id. Ibis, 1^60, p. 397. 

 Hylophilus pusillus, Lawr. Ann. Lye. N. Y. vii. p. 323, viii. p. 179, 



ix. p. 97 ; Baird, Rev. Am. B. i. p. .^81. 

 Hvlophilus plumbiceps, Lairr. Ann. Lye. K. Y. vii. p. 323. 

 Helmintheros ? Scl. P. Z. S. 18-:i6, p. 291. 



Crown of head and nape pale leaden grey ; all the rest of the 

 upper parts rich olive-yellow ; primaries blackish, narrowlj- edged 

 with whitish grey ; loral region and a few feathers around the eye, 

 chin, cheeks, throat and centre of breast, and abdomen silky white ; 

 sides of breast, flanks, and under tail-coverts strongly washed with 



x2 



