696 



U. S. p. R. R. EXP. AND SURVEYS — ZOOLOGY — GENERAL REPORT. 



List of specimens. 



Lsucopolius, Bonaparte. 1 

 AEGIALITIS NIVOSA, C a s s i n . 



Ch. — Small, belongitiff to the same group and somewhat resembling Charadrius azarae ani falklandicus of a.\ithors. 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 6J inches ; wing, 31 ; tail, 1|. 



Hab. — 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 O. 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. 



SQUATAROLA, Cuvier. 



Sqvalarola, Chtier, RSgne 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. 



' Lewcopolius, Bonap. Small ; bill shorter and more slender than in preceding ; wings and tail rather short. 



