30 TYRANNIDA. 
pallida; pedibus saturate plumbeis. Long. tota 3°70, ale 1°95, caude 1-45, rostri a rictu 0-4, tarsi 0-6. 
(Descr. exempl. ex Cozumel I., Yucatan. Mus. nostr.) 
Hab. Norra America, Texas®7, Arizona !°!1.—Mexico, Xenotencal and Aldama in 
Tamaulipas (W. B. Richardson), Mazatlan, San Blas (Grayson*), Presidio near 
Mazatlan (Forrer), San Andres Tuxtla (Sai/é'), Tehuantepec (Sumichrast ®), Merida 
in Yucatan (Schott *), Cozumel I. (G. F. Gaumer); Guatemata, Escuintla (0. 8.3) ; 
Nicaracua, Corinto (O. S8.).—Ecvabor®; Brazit, Bahia (Mus. nostr.). 
The specimen described above is of rather small dimensions, another larger one from 
the same source has a wing 2:1 inches long, and is as large as one from the vicinity of 
Mazatlan. The birds found along the Mexican frontier in Arizona and the valley of 
the Rio Grande have been separated by Mr. Brewster, and recognized by Mr. Ridgway 
as O. imberbe ridgwayi and O. imberbe, the former being described as larger and greyer 
with hardly any sulphur-yellow tint to the lower plumage, and with a bill larger and 
thicker. This race extends, according to Mr. Ridgway, as far south as Mazatlan. We 
have a specimen from the last-named locality, but are unable to see wherein it differs 
from our series from more eastern and southern places. Moreover, it seems to us that 
an example from Sarayacu in Ecuador and two from Bahia in Brazil are not sufficiently 
distinct to admit of separation. ‘The former isa young bird the latter adult, slightly 
darker in general tint, and with somewhat darker heads and greyer chests. 
Mr. Sennett first discovered this species in the valley of the Rio Grande at Lomita °, 
where others have since been found by Mr. Frazer®. Mr. Richardson has now sent us 
specimens from the State of Tamaulipas on the southern side of the valley. 
The Arizona birds were shot by Mr. F. Stephens near Tucson, where, however, they 
were not common. ‘The males he describes as having a habit of perching on the tops 
of trees and uttering a singular song at sunrise. 
We only met with O. imberbe on one occasion in Guatemala, when a female was 
secured in January near Escuintla, others being observed in the vicinity. Our two 
specimens from Nicaragua were shot, 16th March 1863, close to Corinto on the Pacific 
coast; they are both young birds in their first plumage. On both occasions the birds 
were observed on the outer branches of forest-trees on the edge of clearings. 
2. Ornithion pusillum. 
Myjiopatis pusilla, Cab. & Heine, Mus. Hein. ii. p. 58°; Pelz. Orn. Bras. p. 106’. 
Ornithion pusillum, Scl. P. Z. 8. 1873, p. 577°; Cat. Birds Brit. Mus. xiv. p. 126°. 
Camptostoma imberbe, Lawr. Ann. Lyc. N. Y. vii. p. 473°; Taylor, Ibis, 1864, p. 86°. 
Camptostoma flaviventre, Scl. & Salv. P. Z. 8. 1864, p. 358", 1867, p. 576 °; Salv. P. Z. S. 1870, 
p- 197°; Ibis, 1885, p. 294”. 
Precedenti similis, sed dorso toto olivaceo, fasciis alarum duabus sordide albis et corpore subtus flavicante 
distinguendum. 
Hab. Panama, Bugaba (Arcé®), Lion-Hill Station (M*Leannan**). — CoLomsia! ; 
AMAZONS VALLEY? 8; Trintpap®; Gurana !°, 
