NATURAL SCIENCES OF PHILADELPHIA. 
117 
The feet are entirely free ; the spur about as long : the membrane extending 
between the spurs is slightly concave, leaving the extremity of the tail free 
for the last joint, or for about one-sixth of its total length. The general color 
is a pale brownish gray, darker above than below. 
Length to occiput 1.00 Length of tragus .42 
" to root of tail 2.60 " of leaf of nose .30 
" of tail 1.50 Wing, from carpal joint 3.00 
of ears 1.10 Fore-arm 2.00 
This species closely resembles the M. Waterhousii, of Grray, from the West 
Indies. It differs, however, in the longer tail and shorter appendage of the 
nose, as well as in the widely different locality. 
It is to the genus Macrotus, of the subfamily Megadermata, that the first leaf- 
nosed bat ever positively known as an inhabitant of the United States belongs. 
It was discovered at Fort Yuma, California, by Major G-. H. Thomas, U. S. A. 
It is true that the Brachyphyllum cavernarum of the Phyllostomata has been 
given as occurring in South Carolina, but the statement has never been veri- 
fied by any of the numerous corps of excellent naturalists resident in that 
State, and is probably an error. 
Descriptions of two new species of Birds from the vicinity of Fort Tejon, 
California. 
BY JOHN XANTUS DE VESEY. 
Tyrannula hammondii De Vesey. Tail moderately forked; the feathers 
acutely pointed. Third quill longest, second and then fourth a little shorter. 
First much shorter than fifth, a little longer than sixth. Bill very narrow, dark 
brown. Above dark olive green, considerably darker on the head. Breast and 
sides of the body light olive green, the throat grayish white ; the rest of the 
under parts bright sulphur yellow. A whitish ring around the eye. Wings 
and tail dark brown, the former with two olivaceous grey bands across the 
coverts, the latter with the outer edge a little paler than elsewhere, but not at 
all white. Length 2|- inches. 
This species is named after Dr. W. A. Hammond of the United States Army, 
ViREO CASSiNii De Vesey. Third and fourth quills nearly equal, fifth shorter, 
second longer than seventh. Spurious primary very narrow, falcate, acute, 
less than one third the second quill and a little more than one-fourth the third. 
Above, including edge of wing and tail feathers, clear olive green, becoming 
dusky ashy on the top and side of head. Beneath fulvous white, tinged with 
dull olive green on the sides (scarcely on the crissum.) Two broad bands on 
the wing coverts, and the outer edge of the innermost secondaries greenish- 
white ; the outer edge of outer tail feathers and a broad ring round the eyes, 
extending to a frontal band, dull white. Length 5 inches. 
Descriptions of new Birds from Fort *Thorn, New Mexico. 
BY DR. T. CHARLTON HENRY, U. S. ARMY. 
ToxosTOMA CRissALis Henry. Second quill about as long as the secondaries. 
Bill much curved ; longer than the head. Above olive brown, with a faint 
shade of gray. Beneath nearly uniform brownish gray, much paler than the 
back, passing insensibly into white on the chin, but the under tail coverts dark 
brownish rufous abruptly defined. There is a black maxillary stripe, cut- 
ting ofl" a white one above it, but there do not appear to be any other stripes 
about the head. There are no bands on the wings, and the tips and outer edges 
of the tail feathers are very inconspicuously lighter than the remaining portion. 
Length 11 inches; wing 4-00 inches ; tail 5| inches. 
JuNco DORSALis Henry. Bill black above, bright brownish below. 
1858.] 
