\ 
428 REVIEW OF AMERICAN BIRDS. [PART I. 
Smith-/Collec-} Sex When ; 
sonian| tor’s | and Locality. Collected Received from Collected by — 
No No. | Age. 4 
$2,513 oe .. | Puerto Cabello, Ven. cee J; Rider. oye ti Fee 
32,514 a oe “ eee LE uct tb) § on aerate 
24,944 at .. | Bogota. se Lede Geotroy: ol gv aenaten 
Myiadestes umicolor. 
Myjiadestes unicolor, Scuater, P. Z. §. 1856, 299 (Cordova) ; 1857, 5, 
213 (Orizaba) ; 1858, 97.—Is.. Catal. 1861, 47, no. 289.—SciarEer 
& Satvin, Ibis, 1860, 397 (Coban). 
Hab. Central Mexico and Guatemala. 
(No. 22,377, 9, type.) Second quill rather shorter than 7th; 4th and 5th 
longest, and about equal; 1st about one-third the longest. 
General color dark slate color, paler below (darkest on jugulum and breast) ; 
chin and anal region lighter. Eyelids white; lores and cheeks dusky. Tail 
feathers black, except central, which are like the back, the outermost which 
is ashy except at base, and the second feather which has the end and a portion 
of inner web ashy, the extreme tips of the two last mentioned feathers whitish. 
Quills with a band of dull fulvous across their bases, shown very obscurely 
externally as a transverse wing-bar, followed by’a blackish one. Bill black; 
legs hazel. 
(No. 22,377, 9.) Total length, 7.50; wing, 3.80; tail, 3.70; difference be- 
tween outer and fourth tail feathers, .50; difference between 10th and longest 
quills, .85; exposed portion of lst primary, 1.00, of 2d, 2.50, of longest (4th) 
(measured from exposed base of Ist primary), 3.00; length of bill from fore- 
head, .60, from nostril, .30, along gape, .76; tarsus, .85; middle toe and claw, 
.80, claw alone, .22; hind toe and claw, .60, claw alone, .26. 
This species in form resembles JZ. obscurus, although in colora- 
tion is more like townsendii, from which the prevailing dark slate 
(not grayish-ash), and the absence of the distinct cinnamon bars 
across the quills readily distinguish it. The pattern of coloration 
of quills is as in townsendii, but the want of contrast in the tints 
renders this almost inappreciable in the prevailing dark slaty plumbe- 
ous of upper parts. The axillars and inner lining of wings are slate, 
like the breast ; but the pale fulvous band at base of quills is very’ 
well marked in the inside of wing. 
Smith-| Collec Sex Whe P 
sonian| tor’s and Locality. Coll rail Received from Remarks. 
No. No. | Age. Oeste: 
22,377 os Q | Cordova, Mex. aes Verreaux, Type. [ty pe. 
30,720 ate -. | Choctum, Vera Paz.| Jan. 1860, O. Salvin. Compared with 
