New Species oj Birds from Dominica. 49 



npper part of breast and sides clear bluish-gray, lower part of breast, ab- 

 domen and under tail-coverts pale yellow ; bill and feet deep black. 



Length, 8f in. ; wing, 3£ ; tail, 3f, tarsus, #; bill from front, H. 



The female does not differ in plumage from the male. 



Types in National Museum, Washington. 



BemarJcs. This is a large species, exceeding M. crinitus in 

 size j the fourth quill is longest, the third and fifth nearly a& 

 long and equal ; the bill is large and strong, and of a deep 

 black throughout ; the upper plumage is dark, much like that 

 of M. tyrannulus, but is even darker. 



In the collection are seven specimens ; they agree closely 

 in plumage, 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. 

 In a List of Birds from St. Lucia, given by Mr. Sclater (P. Z. 

 S., 1871, p. 271), he refers it to M. erylhrocercus . 



I have a specimen of this species from Bahia (verified by 

 Mr. Sclater) ; 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 M. Oberi. 



I do not determine that this is the same as the species ob- 

 tained 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, thus far, so industriously worked up the avi- 

 fauna of Dominica. 



