APPENDIX. 353 
4. Myitarchus Oberc. “Sunset Bird.” 
MALE. Pileum, nape, and sides of the head dark umber-brown, 
upper plumage dark olive-brown, upper tail-coverts edged with dull 
ferruginous ; two middle tail-feathers blackish brown, the other feath- 
ers are colored the same, except on the outer two-thirds of the inner 
webs, where they are bright ferruginous; outer web of lateral feather 
and ends of the others, ash color; quills brownish black, the prima- 
ries narrowly edged with dark ferruginous; the outer secondaries 
are margined with very pale rufous, and the other secondaries with 
pale yellowish white; wing-coverts dark-brown, ending with pale 
ashy tinged with rufous ; under wing-coverts pale, dull yellow, inner 
margins of quills light salmon-color; lores, throat, upper part of 
breast, and sides, clear bluish-gray, lower part of breast, abdomen, 
and under tail-coverts, pale yellow; bill and feet deep black. 
Length, 88 in.; wing, 33; tail, 38; tarsus, $; bill from front, 44. 
The female does not differ in plumage from the male. 
Types in National Museum, Washington. 
Remarks. This is a large species, exceeding MM. crinitus in 
size; the fourth quill is longest, the third and fifth nearly as long, 
and equal ; the bill is large and strong, and of a deep black through- 
out; the upper plumage is dark, much like that of J7. tyrannulus, 
but is even darker. 
In the collection are seven specimens. They agree closely in plu- 
mage ; two only differ from the type in the dimensions of the wing, 
one having it three and three-quarters, and the other four inches in 
length. 
Mr. E.C. Taylor (Ibis, 1864) records a species of Myiarchus from 
Dominica, which was for a good while undetermined. Ina List of 
Birds from St. Lucia, given by Mr. Sclater (P. Z.S., 1871, p. 271), he 
refers it to MZ. erythrocercus. 
I have a specimen of this species from Bahia (verified by Mr. Scla- 
ter); on comparison I find the two birds to differ very decidedly. 
M. erythrocercus is smaller ; above it is of a lighter brown, more 
ochreous, especially on the crown; the bill is weaker and more 
depressed ; they are somewhat alike in the coloration of the tail- 
feathers, but the line of contact of the two colors is more decided 
in MZ. Obert. 
I do not determine that this is the same as the species obtained 
by Mr. Taylor ; possibly the two forms may exist in Dominica. 
I have named this species in compliment to Mr. Fred. A. Ober, 
who has so industriously worked up the avifauna of Dominica. 
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