B.S. 22131. Tide channels or 
cangrejales, mouth of Rio Ajo at 
loxw tide. Black spots are crabs. 
Good feeding grounds for shore- 
birds. Lavalle, Buenos Aires, 
Argentina. 
October 25, 1920. 
_ jgti ’ 
- ^ " v ' - . ■■ - i 
#*0 
•* • «a»:T 
-- ■' 
---- - ■ ;i '" 
M&; 
/. -i 
> ? r ■ -A.S 
sp*/- 
■ - 5 ' 
■y< 
.'A ~ 'H ' 
-Tsv- 
* »* 
bE4A»v 
OJfiM 
B.S. 22132. Flats grown with 
salicomia at mouth of Rio A jo. 
Lavalle, Buenos Aires, Argentina. 
October 25, 1920. 
J&*±2r 
W’ 
B.S. 22137* Cormorants 
Phalacrocorax v. vigua and gulls , 
Larus maculipennis at mouth of 
Rio A jo. Lavalle, Buenos Aires, 
Argentina. 
October 25, 1920. 
> 
« >. 1 
