696 TT. S. P. R. R. EXP. AND SURVEYS ZOOLOGY GENERAL REPORT. 
List of specimens. 
Oatal 
No. 
Set 
Locality. 
When 
collected. 
"Whence obtained. 
Collected by 
Length 
of wings. 
Remark, 
1137 
3 
July 13. 1843 
July 14,1843 
7.00 
15.00 
4.75 
1138 
3 
6.88 
14.50 
4.75 
557 
432C 
9028 
MU35 
3 
Loup fork of Platte 
1857 
July 8 
Lieut. Warren 
Dr. Hayden.. 
7.50 
6.75 
15.75 
14.75 
4.87 
4.25 
Pupil black, iris dark brown.. 
do 
9038 
Q 
6.50 
14.50 
4.50 
9039 
3 
.lo 
do.... 
7.50 
15.12 
4.60 
9034 
Q 
d0 
7.25 
15.25 
4.75 
Leucopolius, Bonaparte. 1 
AEGIALITIS NIVOSA, Cass in. 
Ch. — Small, belonging to the same group and somewhat resembling Charadrius azarae and falklandicus of authors. Bill 
straight, pointed, rather narrow ; wing moderate, first quill longest ; tail short ; legs moderate, rather slender. 
Front, line over the eye, and entire under parts white ; subfrontal band black ; head above light brownish ashy, with a tinge of 
reddish yellow ; upper parts of body and wings light ashy brown, darker on the rump. Quills brownish black, with their shafts 
white ; some of the shorter primaries irregularly marked with white on their outer webs ; secondaries tipped with white, and 
some of the longer secondaries almost entirely white ; middle tail feathers brown, outer white ; bill dark ; legs light. A dark 
spot on each side of the breast, probably indicating a band across the breast in more mature plumage than the present specimen. 
Total length about 6£ inches ; wing, ; tail, If. 
Hob. — Presidio (near San Francisco) California. (Lieut. W. P. Trowbridge.) 
A single specimen of the bird now described is in Lieut. Trowbridge's collection from the 
coast of the Pacific, and appears to be a species not previously noticed by naturalists. It is of 
the same group subgenerically as C. azarae of South America, but is quite distinct from that 
or any other which has come under our notice. It is the first representative of the group to 
which it belongs yet discovered in the United States. 
List of specimens. 
Catal. No. 
Locality. 
When collected. 
Whence obtained. 
GC00 
Presidio, California 
May 8, 1854 
SQUATAROLA, Cuvier. 
Sqvatarola, Cuvier, Rtgne Anim. I, 1817. Type Tringa squatarola, Linn. 
Ch. — A rudimentary hind toe. Legs reticulated with elongated hexagons anteriorly, of which there are five or six in a 
transverse row ; fewer behind. First primary longest. Tail slightly rounded. 
1 Leucopolius, Bonap. Small ; bill shorter and more slender than in preceding ; wings and tail rather short. 
