Races of the Guiana Flycatcher. 305 
eastern Venezuela, and northern Brazil south to the Amazon valley and 
west at least to the Madeira River. 
REMARKS.—This, the typical form of the species, was originally 
described by Gmelin as Muscicapa ferox,’ based chiefly on the Tyrannus 
cayanensis of Brisson.” This is without doubt the species now known 
as Myiarchus ferox, so that the proper application of the name ferox 
to this species is clear and the currently accepted designation correct. 
This, with the exception of Myiarchus ferox insulicola, is the darkest 
race of the species. The exact limits of its geographic distribution 
remain, however, yet to be determined. 
MYIARCHUS FEROX INSULICOLA Hellmayr and von Seilern. 
Myiarchus ferox insulicola HELLMAYR and VON SEILERN, Verh. Ornith. 
Gesell. Bayern, vol. XII, Heft 3, July 25, 1915, p. 202 (Man-o’-War Bay, 
Tobago Island). 
Subspecific characters.—Similar to Myiarchus ferox ferox, but wing 
and tail much longer; bil] stouter; upper parts darker and more grayish 
(less greenish) ; throat and jugulum darker; and rusty margins of the 
rectrices more conspicuous. 
Measurements.—Male: wing, 94 mm.; tail, 94; exposed culmen, 21. 
Type locality—Man-o’-War Bay, Island of Tobago, West Indies. 
Geographic distribution.—Island of Tobago. 
REMARKS.—This recently described subspecies is very distinct from 
Myiarchus ferow ferox, and is the darkest race of the species. It seems 
to be confined to the Island of Tobago. 
MYIARCHUS FEROX VENEZUELENSIS Lawrence. 
Myiarchus venezuelensis LAWRENC2, Proc. Acad. Nat. Sci. Phila., 
vol. XVII, February, 1865, p. 38 (Venezuela). 
Subspecific characters.—Similar to Myiarchus ferox ferox, but upper 
parts lighter and more grayish or brownish. 
Measurements.—Male: wing, 84-87 mm.; tail, 86-89; exposed cul- 
men, 17. 
Female: wing, 80-84 mm.; tail, 81-86; exposed culmen, 16.5—17.5. 
Type locality.—Venezuela. 
Geographic distribution.—Middle and western Venezuela, west to 
central Colombia. 
REMARKS.—This bird, originally described as a distinct species, is 
without doubt a subspecies of Myiarchus ferox, and its representative 
in western Venezuela and eastern Colombia. 
1 Syst. Nat., vol. I, part 2, 1789, p. 934. 
? Ornith., vol. II, 1760, p. 398. 
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