170 
Measurements. 
Sex. 
Wing. 
Tail. 
Culmen. 
Tarsus. 
Middle toe. 
No. of spec¬ 
imens. 
c? 
15. 00-16. 30 
10. 50-11.00 
1.25 
4. 40-4. 60 
1. 90-1. 95 
6 
9 
16. 00-17. 50 
• 11.10-12. 00 
1.20 
4. 60-4. 70 
1. 85-2.10 
4 
URUBITI2IGA AKTHRACIKA. 
“Falco anthracinus Light.”, Nitzsch, Pterylography, 1840, 83.-Lafr. Rev. Zool, 1848,240 
Morphnus anthracinus Stbickl. Orn.Syii. i, 1855, 25.— Scl. P. Z. S. 1857, 210 
(Orizaba). 
Urubitinga anthracina Lafr. Rev. Zool. 1848, 241.— Scl. Trans. Zool. Soc. 1858, 262; 
I. Z S. 1858, 294 (Oaxaca); ib. 1868, 629 (Venezuela); ib. 1870,838 (coast of 
Honduras).— Scl. & Salv. Ibis, 1859, 216; P. Z. S. 1864, 369 (Panama); Nom. 
Neotr. 1873, 119. Lawrence, Ann. Lyc. N. Y. vii, 1861, p. — (New Granada); 
UV’ T 186 . 5 ’ 185 (Nicaragua); ib. ix, 1868, 133 (Costa Rica); Mem. Boston 
Soc. N. H. li, 1874, 302 (Mazatlau ; biog. notes).— Salvin, P. Z. S. 1870, 215, 
(Veragua); ib. 838 (Honduras). -Pelz. Orn. Bras. 1871, 394.—Ridgw. Pr. Bos¬ 
ton Soc. N. II. 1873, 63.—Sharpe, Cat. Acc. Brit. Mus. 1874, 215. 
Asturina anthracina Sciileg. Mus. Pays-Bas. Asturime, 1862, 8. 
Buteo antJiracinus Gray, Hand List, i, 1869, 9. 
Morphnus mexicanus Du Bus. Bull. Ac. Brux. xiv, 1847, pt. 2,102.— Gray, Gen. Ann. 1.— 
Lafr. Rev. Zool. 1848,239. ’ ’ 11 
Urubitinga mexicana Bonap. Rev. Zool. 1850, 488.— Cassin, Pr. Ac. Nat. Sc. Philad. 
xii, 1860, p. — (Panama). 
Hob. —Tropical America, from Brazil, Guiana, and Xew Granada 
northward as far as the southern border of the western United States. 
Arizona (breeding) Bendiee and Henshaw. 
Wing,13.15-15.80 ; tail, 7.90-11.00; culmeu, 1.00-1.10; tarsus, 3.00- 
3.50 ; middle toe, 1.60-1.80. Third and filth quills longest, the first 
intermediate between the eighth and tenth; outer four with the inner 
webs slightly sinuated. Tail very slightly rounded, the outer pair of 
feathers j ust appreciably the shortest. Upper tail-coverts black, barred with 
white. Adult: —General color uniform black, with a strong glaucous cast 
on the back, neck, and breast; upper tail-covert's narrowly tipped with 
white; tail deep black, narrowly tipped with white, white at the extreme 
base and crossed at about the middle by a broad, continuous zone of the 
same, of variable width. Inner webs and the coucealed portion of the 
outer webs of the secondaries usually (but not always) mottled with 
rusty ochraceous; terminal half of the bill plumbeous-black; the basal 
half, the cere, and the rictus yellow ; tarsi and toes yellow ; claws plum¬ 
beous-black. Young :—Above brownish-black, more or less variegated 
with ochraceous and sometimes with rusty on wing-coverts and scapu¬ 
lars ; wings indistinctly banded with dark grayish-brown ; head, neck 
and lower parts ochraceous-white, with longitudinal stripes of black ; 
tibifB transversely barred with the same; tail crossed with about seven 
bands of black and white, the bands of each individual feather oblique* 
the relative width of the two colors varying with the individual, but the 
subterminal black band always about twice as broad as the others. 
Inner webs of secondaries strongly tinged with rufous. Upper tail- 
coverts white, more or less barred with black. On the head and neck 
the streaking is not uniform, but the areas where the light or dark 
markings predominate respectively are as follows: the gular region 
cheeks, and supraoral region are whitish, with fine streaks; but 5 the 
pileum and nape, upper half of the auriculars, and maxillary stripe 
extending across the jugulum are nearly uniformly black, in consequence 
of the enlargement and blending of the streaks. “Iris brown* cere 
and base of bill olive-yellow or greenish ; feet yellow.” 
The white tail-bands vary considerably in width with the specimen ; 
but we cannot discover any rule of difference according to locality or 
