434; Air. C. H. B. Grant on Birds collected in Argentina, 



Fam. Charadriid^. 



241. Vanellus cayennensis. 



Vanellus cayenyiensis Arg. Orn. ii. p. 1G5. 



a. ? ad. Los Ynglases, Ajo. Sept. 11, 1908. 



b. ? ad. „ „ Sept. 23, 1908. 



c. ? ad. „ „ Sept. 21, 1908. 



d. S 'if^- V „ Sept. 25, 1908. 



e. ? ad. „ „ Sept. 30, 1908. 

 /,^. c? nestling. „ „ Nov. 1,1908. 

 //,. ? nestling. ,, „ Nov. 1, 1908. 



i. (^ young. „ „ Jan. 11, 1909. 



j. ? ad. „ „ Jan. 11, 1909. 



k. S young. „ „ Jan. 12, 1909. 



/. S young. „ „ Jan. 13, 1909. 



m. ? nestling. „ ,, Jan. 20, 1909. 



n. ? imm. „ „ Feb. 15, 1909. 



0. S young. „ „ Jan. 19, 1910. 



A very common resident in the Ajo district. The nest is 

 a slight hollow in the ground, sometimes lined with a few 

 bits of sticks or rubbish, and four eggs form the complete 

 clutch. 



Thirty-six eggs were brought home ; the ground-colour 

 varies from bright buff to clear olive, and they measure : 

 axis 1-7 to 2-0 in., diam. 1-27 to 1-37. 



242. Charadrius dominicus. 



Charadrius doininiciis Arg. Orn. ii. p. 170; Sharpc, Cat. 

 B. xxiv. p. 195. 



rt, b. ? ad. Tuyu, Ajo. Dec. 2, 1908. 



c. (S ad. Cape San Antonio, Dec. 17, 1908. 



d. ? ad. Los Ynglascs, Ajo. Jan. 11, 1909. 



All these specimens are in winter plunmge, and are still 

 moulting. 



The American Golden Plover is very plentiful throughout 

 the summer months, and frequents, often in large flocks, 

 both the open grass-land and the edges of the lagoons. 

 I have not observed it during the winter. 



