119 
Ornithology of Central America. 
the very thickest, underwood, near, but not upon the ground. 
It is by no means shy, but it is hard to procure good specimens 
from the difficulty of keeping it in sight at a distance sufficient 
to avoid spoiling them. 
131. Thamnobhilus melanurus, Gould? 
Vicinity of Omoa (Leyland). It is likely that this northern 
bird is really specifically distinct from the true T. melanurus ol 
the valley of the Amazons. 
Subfam. Formicivorin,e. 
132. Fokmicivora boucardi, Sclater, F. Z. S. 1858, p. 300. 
Mr. Leyland obtained a female specimen near Omoa. 
133. Cercomacra tyrannina, Sclater, P. Z. S. 1858, p.245. 
A pair of this species are in the Derby Museum, obtained 
near Coban by Delattre. Mr. Leyland obtained one example 
a female—near Belize. 
Subfam. FormicariinjE. 
134. Gymxocichla nudtceps (Cassin); Sclater, P. Z. S 
1858, p. 274. 
Vicinity of Omoa (Leyland). 
135. Gkallakia guatemalensis, Prev.,Voy. Venus, Ois. t. 2 
Sclater P. Z. S. 1856, p. 294. . . 
Specimens of this bird in the Derby Museum at Liverpoo 
were collected by Delattre at Coban in June 1843. 
Fam. XVII. TYRANNIDiE. 
Subfam. T^nioptehin33. 
136. Sayohnis aquatica, sp. nov. 
iinos.: secundariis ’£££%£% 
SSSTC: SftZX ™— 3 >' M °' 7 - 
rostri a rictu *8. dneracece, sed ab hac alis minus 
Iff. Sayomithi mgncanti et S ’ omn inb albo, ab 
i. «ide„t at Duenas, ivl.aia it 
