108 BIRDS OF BRITISH GUIANA. 



Key to the Species. 



A. Larger, wing more than 110 mm. 



a. Sides of face and band on hind-neck 



nifous ; bill larger, more than 15 mm. C. icilsoiu', p. 108. 

 h. Sides of face and band on hind-neck 



black ; bill smaller, less than lo mm. C. sonipalmatus, p. 109, 



B. Smaller, wing less than ]10mm. ; collar 



on fore-neck (in winter plumage) in- 

 complete C. coUaris, p. 110. 



()b. Charadrius wilsoni. 

 "V\'iLso>"'s Plover. 



Chai'adrius icilsoni Ord, in Wilson's Amer. Orn. ix. p. 77, pi. Ixxiii. 



fig. 5, 181-1 (Cape Island, Xew Jersey) ; Brabomiie & Chubb, 



B. S. Amer. i. p. 39, no. 877, 1912. 

 Charadrius crossirostris Cab. in Schomb. Eeis. Guian. iii. p. 7oO, 1848. 

 ^(fialiiis icilsonia Quelch, Timehn (2) x. p. 271, 1S96 (migi-ation). 

 Ochthodromus icihoni Sharpe, Cat. B. Brit. Mus. xxiv. p. 211, 1S96. 



"The Great-billed or Wilson's Plover*' [Quelch). 



Adult female {summer plumaqe). General colour above earth- 

 brown including the back, upper wing-coverts, scapulars, and long 

 innermost secondaries; bastard-wing, primary -coverts, and quills 

 blackish more or less tipped and edged with white ; middle tail- 

 feathers blackish towards the tips, lateral feathers for the most part 

 white ; crown of head and sides of the neck similar to the back 

 but tinged with rufous ; a spot in front of the eye, a line across 

 the fore part of the head, and a band on the fore-neck black, the 

 last more or less tinged with rufous ; above and behind the eye 

 rufous, extending on to the hiud-neck ; forehead, throat, and entire 

 under surface white. 



Total length 180 mm., culmen 21, wing 121, tail 47, tarsus 28. 



The bird described is in the Biitish Museum and was collected by 

 A. Goering at Carupano, Venezuela — Salvin-Godman collection. 



Adult female (winter p'lumaae). Differs chiefly from the summer 

 plumage by the absence of the black line across the fore part 

 of the head and the black band on the fore-neck, the latter being 

 represented by an earth-brown band. 



The female in winter plumage from which the description is 

 taken was obtained on Margarita Island, Venezuela, by Dr. P. R. 

 Lowe, on January 6, 1901, and presented to the British Museum 

 bv the Countess of Wilton, 



