43 
in the Chupnt Valley , Patagonia. 
some marshy ground close to the village, which I flushed a 
second time in order to he sure of the species. 
-f-TaiNGA MACULATA. 
Abundant in large flocks about the salt lagoon to the north 
of the village, and also on the sandy flats at the mouth of the 
river. In their movements and habits they closely resemble 
our ubiquitous T. alpina at home, flying in a body, suddenly 
wheeling round, displaying alternately their light underparts 
and dark backs, and usually raising their wings over their 
backs before alighting, which they all do at the same moment. 
-Ktambetta elavipes. 
Common along the banks of the river and in the adjacent 
swamps and pools. 
~f”LlMOSA HUDSONICA. 
During my visit a small party was always to be found in 
the shallow water at the west end of the large lagoon to the 
north of the village, feeding in company with Tringa macu- 
lata and a species of JEgialitis. On the 13th of November I 
shot two birds. 
Sterna hirundinacea, Less. ; Saunders, P. Z. S'. 1876, 
p. 647. 
During my visit a large flock frequented the banks of 
sand and shingle at the mouth of the harbour , and had in¬ 
creased in number when I left on the 29th of November. On 
the 26th I observed amongst the adult birds some Terns with 
grey foreheads and indistinct black hoods, their primaries and 
secondaries being marked with rufous brown, beaks dark lead- 
colour. As, with these exceptions, they precisely resembled 
the black-headed birds, I conclude they were S. hirundinacea in 
immature plumage. I obtained specimens in both plumages. 
Though these birds were apparently congregating for nesting- 
purposes, I could not learn from any of the colonists that their 
breeding-place was known. 
Larus maculipennis. 
Common about the mouth of the river, and a few observed 
up the valley the first week of my visit. From some of the 
colonists I learned the following particulars concerning the 
