BIRDS — SYLVICOLIDAE MYIODIOCTES MINDTUS. 
201 
Section Setophageae. 
Ch. — Bill usually distinctly notched at tip ; decidedly broader than hign at the base, though thick. Rictus well pro- 
vided with bristles, the longest nearly equal to the bill. Tail nearly equal to the wings, or longer. Wings rounded ; first 
quill nearly equal to fourth. 
The following genera compose this section : 
Myiodioctes. — Bill muscicapine. Feet stout. Tarsus longer than the head. Toes developed; 
hind toe considerably longer than the lateral. Tail about equal to the wings; slightly rounded. 
Cardellina. — Bill parine ; as high at base as broad ; scarcely deflected at tip. Tail nearly 
even ; first quill equal to the sixth. Hind toe longer than the lateral. 
Basileuterus. — Bill stout, but rather depressed at base. Wings very short ; the first quill 
shorter than the secondaries. Tail considerably graduated. Hind toe longer than the lateral. 
Setophaga. — Bill muscicapine. Feet slender. Tarsus scarcely equal to the head. Hind toe 
not longer than the lateral. Tail usually longer than the wings ; considerably rounded,, or 
even graduated. 
MYIODIOCTES, Aud. 
Myiodioctes, Aud. Syn. 1839, 48. (Type Motacilla mitrata.) 
Wilsonia, Bonap. List, 1838. (Preoccupied in Botany.) 
Myioctonus, Cabanis, Mus. Hein. 1850, 18. 
Ch. — Bill depressed, flycatcher like ; broader than high at the base ; gape with bristles nearly as long as the bill, which 
is distinctly notched at tip ; both outlines gently convex. Tarsi longer than the head ; considerably exceeding the middle toe ; 
claws all considerably curved. Tail decidedly rounded or slightly graduated ; the lateral feathers .20 of an inch shorter. 
Wing very little longer than the tail ; the first quill decidedly shorter than the fourth ; colors yellow. 
The species of this genus are decidedly muscicapine in general appearance, as shown by the 
depressed bill with bristly rictus. The type if. mitratus is very similar in character of bill to 
Sylvicola castanea, but the wings are much shorter ; the tail longer and more graduated ; the 
legs and hind toe longer, and the first primary shorter than the fourth, (.15 of an inch less 
than the longest,) not almost equal to the longest. The species are plain olive or plumbeous 
above, and yellow beneath. They may be grouped as follows : 
A. Tail with white patches on the outer feathers. 
Head and neck black. Front, cheeks and under parts yellow. Back olive green. if. mitratus. 
Olive above ; yellowish beneath. Two white bands on the wings f M. minutus. 
B. Tail without white patch on the outer feathers. 
Crown black. Forehead, cheeks, and under parts, yellow. Back olive if. pusillus. 
Streaks on the crown, stripe on sides of head and neck, with pectoral collar of streaks, 
black. Rest of under parts, and line to and around the eye, yellow. Back bluish. 
(Euthlypis, Cab. Mus. Hein. 1850, 18.).. if. canadensis. 
Comparative measurements. 
Cat. 
No. 
Species. 
Locality. 
Sex. 
Length. 
Stretch 
Wing. 
Tail. 
Tarsus. 
Middle 
toe. 
Its claw 
alone. 
Bill 
above. 
Along 
gape. 
Remarks. 
2226 
2245 
990 
do. 
2325 
Myiodioctes mitratus. . . . 
3 
8 
9 
8 
5.00 
4.62 
4.70 
4.60 
4.75 
4.12 
5.33 
4.86 
5.25 
2.70 
2.50 
2.24 
2.06 
2.64 
2.66 
2.44 
2.50 
2.58 
2.42 
2.36 
2.26 
0.78 
0.77 
0.76 
0.70 
0.64 
0.61 
0.56 
0.18 
0.19 
0.16 
0.14 
0.40 
0.38 
0.33 
0.55 
0.52 
0.52 
0.44 
D'y 
do 
Dry 
7.00 
Q 
3 
2.06 
2.50 
0.72 
0.74 
0.52 
0.56 
0.14 
0.16 
0.33 
0.43 
0.44 
0.56 
Dry 
945 
do. 
1021 
Myiodioctes canadensis. 
do 
Q 
2.34 
0.71 0.58 
0.17 
0.38 
0.56 
do. 
7.75 
