HYLOPHILUS. 207 
by Mr. Lawrence", and its range traced to Costa Rica!® and Nicaragua’; but 
Prof. Baird, though he allowed H. pusillus to stand as a species !7, expressed himself 
as not satisfied respecting its distinction from H. decurtatus; and on several other 
occasions their identity has been insisted upon 4 !° 12, 
In habits this species presents nothing peculiar so far as we have observed them. Its 
constant occupation is the pursuit of insect food amongst the branches and leaves of 
the forest-trees. Its nest and eggs are unknown. 
2. Hylophilus aurantiifrons. 
Hylophilus aurantiifrons, Lawr. Ann. Lyc. N. Y. vii. p. 824'; Baird, Rev. Am. B. i. p. 3777; Scl. 
Tbis, 1881, p. 303°. 
Hylophilus hypoxanthus, Pelz. Orn. Bras. p. 1864; Scl. & Salv. P. Z. S. 1868, p. 629°. 
“Supra olivaceus, pileo et nucha brunneis, fronte aurantiaco tincta ; subtus pallide flavus, gutture albicantiore ; 
-pectore interdum fulvo lavato; subalaribus et crisso flavidis ; rostro corylino, pedibus fuscis. Long. tota 
4:5, ale 2-1, hujus rem. prim. 1:2, caude 1-8.” * (Sclater, 1. s.c.*) 
Hab. Panama, line of railway (M‘Leannan1, Hicks *).— Vunuzvena®; Gurana3 
AMAZONS VALLEY 4. 
We do not possess any specimens of this bird from the State of Panama, whence 
Mr. Lawrence’s type was derived!; but Mr. Sclater® having this specimen before him 
recently found it to resemble so closely Venezuelan examples, which had been correctly 
referred to H. hypoxanthus, Pelz., that he placed the latter name as a synonym of 
H. aurantiifrons. Moreover, from Mr. Sclater’s remarks 3, it seems far from improbable 
that the birds called H. acuticaudus and H. insularis (the former from Venezuela, and 
the latter from Trinidad and Tobago), may ultimately be found to be inseparable from 
Hf. aurantiifrons, in which case the name H. insularis should stand for the species, 
were it not obviously inapplicable to a continental bird. It is, however, necessary that 
a good series of specimens of these Hylophili should be examined to settle their 
position; for even the Panama bird differs from the Venezuelan in having no tinge of 
fulvous on the breast, a slight character usually seen in specimens from the latter 
country. 
H. aurantiifrons belongs to Section C of Mr. Sclater’s Monograph *, in which the 
colour of the head spreads to a greater or less extent over the back. 
8. Hylophilus ochraceiceps. 
Hylophilus ochraceiceps, Scl. P. Z. S. 1859, p. 8375"; Ibis, 1881, p. 306°; Scl. & Saly. Ibis, 1860, 
p. 897°; Baird, Rev. Am. B.i. p. 376°; Lawr. Ann. Lyc. N. Y. ix. p. 97°; Salv. P. Z. 8S. 
1870, p. 184°. 
Olivascenti-fuscis, pileo toto rufescenti-ochraceo, alis nigricantibus pallido brunneo extus limbatis; cauda 
