28 REVIEW OF AMERICAN BIRDS. [PART I. 
Turdus obsoletus. 
Turdus obsoletus, Lawrence, Ann. N. Y. Lye. VII, 1862 (%, Panama). 
Hab. Isthmus of Panama. 
Male: Second quill between 6th and 7th; 4th and 5th longest. 
Color above dark brownish olive, deepest on the head; beneath show- 
ing a considerably paler shade of the same, but darkest on the sides; 
throat similar, but with a grayish tinge, the centres of the feathers 
obsoletely darker. Region about the vent and under tail coverts 
pure white. Inner wing coverts, axillars, and inner edges of the 
quills cinnamon rufous. Greater coverts with a spot of cinnamon 
at the end (an indication of immaturity?). Bill and legs uniform 
brown. 
Length, 8.10; wing, 4.60; tail, 3.80; bill from gape, 1.15, from 
nostril, .58; tarsus, 1.17; middle toe and claw, 1.15. 
I owe the opportunity of examining this species to the kindness 
of Mr. Lawrence, the description being taken from his type speci- 
men No. 12, collected by Mr. M’Leannan in 1862. The peculiar 
dark lines crossing the feathers on the back, described by Mr. Law- 
rence, are purely optical in character, being similar to the watering 
of silks, etc. The under parts, too, are quite uniform, the edges of 
the feathers being possibly a little ferruginous. 
This species may be the female of one of the black species as 
suggested by Dr. Sclater, in a letter to Mr. Lawrence; but I am 
unable to assign it to any of those described, and the bird is marked 
as a male by Mr. M’Leannan. 
Turdus migratorius. 
Turdus migratorius, Linn. 8. N. 12th ed. 1766, 292.—Scrater, P. Z. S. 
1856, 294; 1859, 331.—Is. Catal. Am. Birds, 1861, 4.—Bairp, Birds 
N. Am. 1858, 218.—Coorer & Sucktey, P. R. R. R. XII, 1, 1859, 172. 
Figures: Vreituot, Ois. Am. Sept. II, pl. 1x, lxi.—Wuzson, Am. Orn. 
I, 1808, pl. iii—Doveury, Cab. N. H. I. 1830, pl. xii.—Avupuson, 
Birds Am. III, pl. 142; Orn. Biog. II, pl. 131. 
Hab. The whole of North America; Mexico (Oaxaca, Cordova); Cuba, very 
rare (Gundlach) ; Tobago (Kirk). 
In highly plumaged specimens from the east the feathers of the 
inter-scapular region are frequently, even generally, tinged with 
blackish in their centres, passing gradually into ash on the edges, 
and the black of the head ceases to be sharply defined. There is also 
usually a well defined whitish tip, half an inch long, to the outer tail 
feathers. 
