AVES CHARADRIID^ 277 



Quills dark brown ; the primaries with white along the inner web and 

 with narrow edging at the ends. Shafts of primaries ivory white. The 

 first primary without white on outer web, the white area beginning to 

 show on the outer web of the second primary, and increasing in amount 

 on each succeeding primary. The secondaries are dark brown, and have 

 white tips and bases, to the inner ones, which are externally much like the 

 back in color. 



Lower Parts: Chin pale creamy or white shading into cinnamon 

 orange on the upper throat, which color shades abruptly into pale olive 

 grey on the upper breast, in turn shading into the general creamy buff of 

 the rest of the under surface. Sharply contrasted in the fore part of this 

 creamy buff region, on the lower chest is a crescentic area of glossy black. 

 Under tail coverts creamy buff with some traces of dull obsolete bars. 

 Under wing coverts and axillaries pure white. 



Bill black. 



Legs and tarsi flesh color. 



Feet and toes blackish. 



Iris dark brown. 



The sexes do not differ in color. 



Geographical Range. — Patagonia northward to the Rio de La Plata ; 

 Chili and Peru ; the Falkland Islands. 



This Plover was met with by the naturalists of the Princeton Expedi- 

 tions throughout the uplands of Patagonia everywhere, but was particu- 

 larly common near Cape Fairweather and at points on the Rio Deseado. 

 The series of seven of these birds brought to the L^niversity Museum do 

 not vary appreciably in color, but one individual presents a departure in 

 size that is noticeable without detailed measurement. 



No. 7789 P. LI. O. C. (labelled) male and in adult plumage was taken 

 near Mt. Tigre, Patagonia, 14 August, 1896. The wing of this bird 

 measures 7.1 inches, the exposed culmen 1.4 inches and the tarsus 2.05 

 inches, a noticeable excess in size above the normal average. 



Durnford found the birds breeding at Tambo Point in December, and 

 from his observations the following passage is quoted : 



"Partially resident but not numerous in the spring, when many cross 



