APHRIZID&. 179 



Tropical America in general (except "West Indies) 

 north to southern Mexico. 



^E. collaris (VlEiLL.). Azara's Ring Plover. 1 



c 1 . 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 ; lores, 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 

 irregularly 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. JEi. mongola (PALL.). Mongolian Plover. 



FAMILY APHRIZID/E. THE SURF BIRDS AND TURNSTONES. 



(Page 143.) 



Genera. 



a 1 . Tarsus decidedly longer than culmen ; tail emarginate ; terminal portion of 

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

 Plovers, Charadriidaz) Aphriza. (Page 180.) 



a 2 . 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 Charadriwt collari* VIBILL., Enc. Mgth. ii. 1823, 334. JEgialiti* collarit SCL. <fc SALT., P. Z. 8. 1869, 

 252. 



