BIRDS-—CHARADRIDAE—AEGIALITIS WILSONIUS. 
693 
AEGIALITIS MONT ANUS, (Towns.) Cassin. 
Mountain Plover. 
Charadrius montanus, Towns, J. A. N. Sc. VII, 1837, 192.— Ib. Narr. 1839 349.— Aud. Orn. Biog. IV, 1838, 3G2 ; 
pi. 350.— Ib. Syn. 223.— Ib. Birds Am V, 1842, 213 ; pi. 318. 
Jlegialtes montanus, Bon. List, 1838. 
Sp. Ch. —Forehead, stripe over the eye, and entire under parts, white, generally tinged with dull yellowish and ashy on the 
breast. Another hand of black in front above the white band ; back of the neck and sides dull brownish fulvous ; other upper 
parts ashy brown, usually with many feathers edged and tipped with fulvous or rufous; upper tail coverts lighter. Quills dark 
brown with their shafts white, tail brown with a wide subterminal band of brownish black and tipped with white. Shorter 
primaries with a white space on their outer webs, forming a patch of white on the wing ; under wing coverts and axillary 
feathers pure silky white. Bill black, legs yellow. Younger, without the black band in front, and with the white band tinged 
with dull yellow, entire upper parts with the feathers edged and tipped with dull ashy rufous. Total length, about 9 inches ; 
wing, 6 ; tail, 3 inches. 
Hob. —Western North America. 
This bird is only known to inhabit the western countries of North America. Like other 
species of this group it migrates very probably into South America. 
List of specimens . 
Catalogue 
number. 
Sex. 
Locality. 
When collected. 
Whence obtained. 
Orig. No. 
Collected by—- 
Length. 
Stretch of 
wings. 
9043 
Loup fork of Platte, Neb.. 
Lieut. Warren_ 
Dr. Hayden_ 
9044 
_do_ 
_.do_ 
6596 
Mouth of Milk river_ 
Gov. Stevens_ 
Dr. Suck ley_ 
5757 
3 
North Platte_ 
Aug. 12,1856 
Lieut. Bryan__ 
251 
W. S. Wood ... 
8. 75 
15. 50 
7055 
Pole creek, Neb_ 
July 10, 1857 
__do_ 
267 
_do_ 
3709 
Western Texas_ 
J. W. Audubon_ 
6595 
Near 32° latitude_ 
Capt. Pope_ 
6597 
Mirabres to Rio Grande_ 
Dr. Henry_ 
6599 
s 
Los Angeles_ 
Lieut. Williamson. 
Dr. Heermann .. 
6598 
3 
___do_ 
....... - .do_ 
_do_ 
Ochthodromus, Reich . 1 
AEGIALITIS WILSONIUS, (Orel.) Cassin. 
Wilson’s Plover. 
Charadrius ivilsonius, Ord, ed. Wilson’s Orn. IX, 1825,77; pi. lxxiii.— Nutt. Man. II, 1834,21. — Aud. Orn. 
Biog. Ill, 1835, 73: V, 1839, 577; pi. 284 .—Ib. Syn. 223.— Ib. Birds Am. V, 1842, 
214 ; pi. 319. 
Jlegialtes wilsonius, Bon. List, 1838. 
Octhodromus ivilsonius, Reich. Syst. Av. Int. 1853, p. xviii. 
Charadrius crassirostris, Spix, Av. Bras. II, 1825, 77 ; pi. xciv. 
Figures.—Wilson, Am. Orn. IX, pi. 73, fig. 5.— Aud. B. of Am. pi. 219 ; oct. ed. V, pi. 319. 
Sr. Ch.—S maller than the preceding ; bill rather long and robust. Male. Front and stripe over the eye and entire under 
’ Ochthodromus, Reich. Syst. Avium, p. xviii. Type Charadrius wilsonius, Ord. Smaller than Jlegialitis. Bill 
longer and thicker. Tail short. 
