~ 
MYIOBIUS. 57 
more abundant in the State of Panama, whence specimens have been sent us from 
various places. 
Wherever it occurs in Central America the allied M. sulphureipygius occurs with it, 
the two species living independently in the same woyds. MU. barbatus, however, has a 
much wider southern range, whilst I. sulphureipygius is found further northwards 
nearly to the extreme limits of the hot tropical forests of Eastern Mexico. 
2. Myiobius sulphureipygius. 
Tyrannula sulphureipygia, Scl. P. Z. S. 1856, p. 296°. 
Myiobius sulphureipygius, Scl. P. Z. S. 1859, p. 3847; Ibis, 1873, p. 373°; Cat. Birds Brit. Mus. 
xiv. p. 200+; Scl. & Salv. Ibis, 1860, p. 399°; Cassin, Proc. Ac. Phil. 1860, p. 144°; Lawr. 
Ann. Lye. N. Y. viii. p. 87, ix. p. 114°; Salv. P.Z.S. 1867, p. 148°, 1870, p. 198”; 
Sumichrast, Mem. Bost. Soc. N. H. i. p. 557"; v. Frantz. J. f. Orn. 1869, p. 308”; 
Nutting & Ridgw. Pr. U. S. Nat. Mus. vi. p. 402”. 
Myiobius citrinopygius, Cab. & Heine, Mus. Hein. ii. p. 67 ™. 
Myiobius mexicanus, Licht. Mus. Berol. (fide Cabanis *’). 
Praecedenti similis, sed pectore et hypochondriis ferrugineo lavatis. (Descr. maris ex Rio de la Pasion. Mus. 
nostr.) 
Hab. Mexico ©, State of Vera Cruz (Sumichrast™), Cordova (Sallé!), Playa Vicente 
(Boucard ®), Valle Real (Deppe), Cozumel I. (G. #. Gawmer); British Honpv- 
ras, Cayo (Blancaneaux); Guaremata, Rio de la Pasion, Choctum® (0. S. & 
F. D. G.); Nicaragua, Chontales (Belt*), Los Sabalos (Nutting 8); Cosra Rica, 
Angostura (Carmiol *), Tucurriqui (Arcé), La Palma (Nutting) ; Panama, Chiriqui ?°, 
Bugaba 1°, Calovevora, Calobre 1°, Santa Fé® (Arcé), Panama Railway (M‘Zean- 
nan"), 'Truando ( Wood °). 
The first specimens of this species sent to Europe were probably those obtained by 
Deppe at Valle Real in Mexico, which remained undescribed under Lichtenstein’s MS. 
name, VM. mexicanus, in the Berlin Museum. In 1856 Mr. Sclater received examples 
from M. Sallé which he named M. sulphureipygius, comparing the species with the allied 
M. barbatus. The range of this bird in Mexico appears to be extremely limited, 
and probably strictly confined to the hot low-lying forests of the State of Vera Cruz. 
It also occurs on the island of Cozumel, whence Mr. Gaumer sent us a single specimen. 
It is found too in British Honduras and in some abundance in Northern Vera Paz in 
the heavily forested country, lying at an elevation of about 1000 feet above the sea. 
We are not aware that it inhabits the forests bordering the Pacific Ocean on the 
western side of the cordillera, or indeed in any part of the west coast until we come to 
Costa Rica and the State of Panama. In these last-named countries it occurs together 
with M. barbatus, but not beyond the Isthmus of Darien, which appears to be the 
extreme limit of its range in this direction. 
M. sulphureipygius inhabits the dense forest, living amongst the lower branches of 
the forest trees. Its nest and eggs are unknown. 
BIOL. CENTR.-AMER., Aves, Vol. IL., February 1889. S 
