APHRIZID^. 179 



Tropical America in general (except "West Indies) 

 north to southern Mexico. 



JE. collaris (Vieill.). Azara's Ring Plover.^ 

 e*. Bill stout, the culmen decidedly shorter than middle toe 

 (without claw). 



Summer adult : Above grayish brown, beneath white ; 

 hind-neck and broad band across chest clear cinnamon- 

 rufous ; loi-es, orbital region, and ear-coverts black, the 

 former bordered above by a white line, sometimes 

 meeting on forehead. {Female usually with rufous 

 paler and less abruptly defined than in the male, and 

 black markings of head less distinct.) Winter plumage : 

 Somewhat similar to summer dress, but rufous entirely 

 absent, the chest crossed by an indistinct grayish 

 brown narrow band, becoming broader and deeper in 

 color laterally ; black of ear-coverts, loral streak, etc., 

 replaced by dull grayish brown; forehead white. 

 Young : Much like winter dress, but plumage more 

 or less suffused with buff, and feathers of upper parts 

 distinctly bordered with buff or dull ochraceous. 

 Length 6.25-7.00, wing about 5.15-5.40, culmen .62, 

 tarsus 1.15, middle toe .73. Eggs 1.43 X 1-05, pale dull 

 olive, varying to buffy olive, rather sparsely and 

 iiTegularly speckled with dark brown and black. 

 Hab. Northern Asia, south in winter to Malay Archi- 

 pelago, Philippines, Australia, etc. ; accidental on 

 Choris Peninsula, Alaska. 



279. JE. mongola (Pall.). Mongolian Plover. 



Family APHRIZID^E. — The Surf Birds and Turnstones. 



(Page 143.) 



Genera. 



Tarsus decidedly longer than culmen; tail emarginate; terminal portion of 

 bill somewhat swollen, with the upper outline decidedly convex (as in the 

 Plovers, Charadriidce) Aphriza. (Page 180.) 



Tarsus not longer than culmen ; tail slightly rounded ; terminal half of bill com- 

 pressed and pointed, with the upper outline straight, or sometimes even 

 slightly concave Arenaria. (Page 180.) 



1 Charadrius collaris ViEiLL., Enc. Meth. ii. 1823, 334. ^Egialitis collaris ScL. & Salt., P. Z. S. 1869, 



252. 



