390 
U. S. V. E. R. EXP. AND SURVEYS—ZOOLOGY—GENERAL REPORT. 
Java, in the collection of the Philadelphia Academy, shows that the bill in the last mentioned 
genus is much shorter, deeper, and with the vertical outlines more curved. The wings are 
longer, being nearly equal to the tail. The hind toe is a little longer than the middle anterior 
one, not shorter ; the outer lateral claw reaches to the middle of the central one instead of only 
to its base. The legs are yellow instead of black. P. exilis is much smaller than any American 
titmice, measuring but little over three inches. The American species of Psaltriparus are, 
however, the smallest of our Parinae. 
The species may he arranged as follows : 
a. Head striped with black on the sides. 
The stripes passing under the eye and uniting on the occiput. P. melanotis. 
b. No stripes on the head. 
Back ashy ; crown light brown... P. minimus. 
Back and crown uniform ashy... P. plumbeus. 
The first mentioned species differs in longer and more compressed hill from the others, and 
may stand alone in the genus, and the others he referred to Psaltria or elsewhere. 
Comparative measurements of species. 
Catal. 
No. 
Species. 
Locality. 
Length. 
Stretch 
of wings 
Wing. 
Tail. 
Tarsus. 
Middle 
toe. 
Its claw 
alone. 
Bill 
above. 
Along 
gape. 
Specimens 
measured. 
4.20 
2.08 
2.62 
0.66 
0.44 
0.14 
0.26 
0.32 
6774 
4.44 
1.92 
2.50 
0.64 
0.44 
0.14 
0.26 
0.33 
592-2 
4.00 
1.86 
2.26 
0.60 
0.46 
0,13 
0.27 
0.30 
6758 
4. ]0 
1.84 
2.36 
0.60 
0.44 
0.12 
0.28 
0.32 
Skin. 
3718 
3.62 
1.76 
1.98 
0.66 
0.44 
0.12 
0.29 
0.32 
Skin. 
4.25 
1.95 
2.40 
.61 
.43 
3.52 
1.90 
2.30 
.56 
.47 
.14 
.19 
PSALTRIPARUS MELANOTIS, Bonap. 
Black-cheeked Tit. 
Pams melanotus, Sandbach, Pr. Brit. Ass. VI, 1837, (1838,) 99, (only named.)— P. melanotis, Hartlacb, Rev. 
Zool. 1844, 216. 
Poecila melanotis, Br. Consp. Av. 1850, 230. 
Jlegithaliscus melanotis, Cab. Mus. Hein. 1850-1, 90. 
Psaltria melanotis, Westermann, Bijdragen tot d.e Dierkunde, 1851.— Cassin, Ill. I, 1853, 20. 
Psaltriparus melanotis, Bonap. Comptes Rendus, XXXIII, 1854. 
Psaltriparus personatus, Bp. Comptes Rendus, XXXI, Sept. 1850, 478. 
Psaltria personata, Westermann, Bijdragen tot de Dierkunde i, 1851, 16; plate. 
Sp. Ch.—A black patch on yach cheek nearly meeting behind. Crown and edges of the wing and tail ash gray; rest of 
upper parts yellowish brown, lighter on the rump. Beneath whitish ; anal region tinged with yellowish brown. Length 
about 4 inches ; wing, 1.90 ; tail, 2.30. 
Hah. —Eastern Mexico to the Rio Grande. 
In this species the hill is moderately long and considerably compressed ; the culmen straight 
at the base, then rapidly curving to the tip which slightly overhangs the lower jaws; the gony 
also is decidedly curved, less so than the culmen. The tarsus is much longer than the middle 
toe ; the outer lateral toe rather the longer, and reaching the base of the middle claw ; the hind 
