470 Mr. C. H. B. Grant on Birds collected in Argentina , 
The adults are in very worn summer dress, and the 
October bird is commencing to change. 
Commonly observed throughout the river-expedition in 
wet places and on the edges of the lagoons. 
261. Micropalama himantopus. 
Micropalama himantopus Sharpe, Cat. B. xxiv. p. 401. 
a, b. d ? ad. Los Ynglases, Ajo. Feb. 24. 1909. 
c. 9 ad. Near Esquina, N. Argentine. Nov. 14, 1909. 
This little Wader has much the same actions as the Curlew- 
Sandpiper ( Tringa subarquata ), for which species I at first 
mistook it. Like that bird it wades deep into the water—in 
fact, until the water flows over the back of its neck. 
262. Limosa hudsonica. 
Limosa hudsonica Sharpe, Cat. B. xxiv. p. 388. 
Limosa hcemastica Arg. Orn. ii. p. 191. 
a, b, c. $ young. Los Ynglases, Ajo. Nov. 1, 1908. 
d . ? ad. Cape San Antonio. Dec. 20, 1908. 
263. Ehynchops melanura. 
Rhynchops melanura Arg. Orn. ii. p. 193; Saunders, Cat. 
B. xxv. p. 156. 
a, b. ^ 9 ad. Cape San Antonio. Dec. 20, 1908. 
c. c^ad. Riacho Anclio, N. Argentine. Aug. 1, 1909. 
d. (Jad. Colonia Risso, Paraguay. Sept. 9, 1909. 
e. S nestling. „ „ ,, Sept. 9, 1909. 
f. g. S ? young. Near Puerto Braga, Paraguay. Sept. 24, 
1909. 
A, i. £ young. Colonia Risso, Paraguay. Oct. 26, 1909. 
This species was observed in nearly every locality visited, 
but is apparently only a winter visitor in the Ajo district, 
as I have not heard of it breeding there. At that season 
it congregates in flocks of several hundred individuals, and 
frequents both the coast and inland waters, where it is usually 
seen hawking over the water with slow regular flight, 
presenting to my mind a rather ungainly appearance. 
