174 
U. S P. R R EXP. AND SURVEYS-ZOOLOGY-GENERAL REPORT, 
List of specimens. 
Catal. 
No. 
Sex 
& age. 
Locality. 
When collected. 
Whence obtained. 
Orig’l 
No. 
Collected by— 
Length. 
Extent. 
Wing. 
Remarks. 
1852 
-,1843 
5265 
5263 
—,1856 
8.12 
15. 
4.75 
. 
Iris dark brown.... 
15 miles.) 
5264 
3 
10,1856 
8.25 
15.25 
4.50 
5262 
8 
22,1856 
8.75 
15.50 
5. 
5258 
9 
8 75 
13 75 
4.50 
5260 
3 
May 
—,1856 
8 75 
16 50 
5.25 
5259 
9 
8.50 
14 50 
5. 
5246 
9 
10,1856 
8.37 
14.50 
5240 
3 
May 
30,1856 
8.75 
15.37 
5.50 
5243 
9 
8.75 
15.25 
5.25 
5256 
9 
31,1856 
8.25 
15.25 
4.50 
5253 
8 
29.1856 
8.75 
15.25 
5.25 
5252 
8 
2,1856 
9. 
15.25 
5.50 
5242 
8 
30,1856 
8.75 
15.50 
5. 
5266 
8 
1,1856 
8.25 
14.50 
4.75 
river, Nebraska. 
5261 
8 
8 . 
15. 
4.75 
8896 
9 
6,1857 
9. 
15.75 
4.75 
8699 
9 
.do. 
16,1857 
K 
8 . 
15. 
4.50 
8898 
8.50 
15.75 
4.50 
8797 
8 
27,1857 
70 
8.75 
14.75 
5,00 
er. 
feet grayish black. 
5633 
8 
July 
29,1856 
173 
W. S. Wood.... 
7082 
9 
5632 
9 
July 
28,1856 
169 
.50 
5634 
o 
July 
29,1856 
177 
8 . 
5056 
1,1855 
57 
9. 
14. 
5. 
5057 
o 
Sept. 
1,1855 
135 
8.50 
14.50 
5. 
7385 
5906 
9 
8.75 
15.00 
5907 
8 
9 50 
5905 
o 
9.00 
15.50 
5908 
V 
4378 
May 
2,1855 
162 
9. 
16. 
5.37 
5506 
9 
557 
8 
675 
4214 
— —,1853 
4470 
JohnXantus deVesey. 
TYRANNUS VOCIFERANS, Swain son. 
Cassiu’s Flycatcher. 
Tyrannus vociferous, Swainson, Mon. Tyrant Shrikes in Quarterly Journal Sc. XX, Jan. 1826, 273— Ib. Philos. 
Mag. I, 1827, 368. 
Tyrannus cassinii, Lawrence, Ann N. Y. Lyceum, N. H. V, 1852, 39 ; pi. iii, fig. 2, (Texas.) 
Sp. Ch. —Bill from the forehead about as long as the head. Tail even or slightly rounded. Outer five primaries attenuated ; 
the first four abruptly and deeply emarginated ; third quill longest, second and fourth a little less, first shorter than the sixth, 
and half an inch less than the longest. Head and neck above and on the sides rather dark bluish ash ; the throat and breast 
similar, and only a little paler. Rest of upper parts olive green tinged with gray, mixed with brown on the rump ; the upper 
tail coverts and surface of the tail nearly black ; the outer web of the external feather and the tips of all pale brown. The chin 
is white, in strong contrast to the dark ash of the throat; the rest of the under parts bright sulphur yellow, (the sides olivaceous;) 
palest on the under tail coverts and inside of wing. A concealed vermilion patch in the crown, bordered by straw yellow. 
Wing feathers orown, tinged with olive, becoming paler towards the edge. Length, 8.80 inches ; wing, 5.25 ; tail, 4.25. 
Ilab. —Valley of Gila, eastward to Pecos river, Texas, and into Mexico, on table lands. 
