81 
Paraguay, Bolivia, and Southern Brasil. 
been conceded to Bolivia are between Bahia Negra and the 
fort of Coimbra. 
S. Brasil .—Bio Apa, Porto Martinho, Pan de Azucar, 
Coimbra, Puga, Porto Esperanqa, Albuquerque, Boca de 
Homiguera, Babicho, Biacho Paraguay, Mirin, Corumba. 
The Ajd district is open grass camp or pampa, with a few 
Tala woods. It is intersected by great swamps which water 
the district, and, as might be expected, is rich in water- 
haunting birds. It is also a very interesting locality, inas¬ 
much as it is about the southern limit of many woodland 
species common at Buenos Aires and to the northward, and 
is about the northern limit of many Patagonian species that 
migrate northward in the winter months. 
On the Bio Parana and Bio Paraguay the country is well 
wooded for the whole of the course traversed, especially after 
passing Corrientes, and at many of the ports there are 
large factories for the cutting of wood. Large lagunas and 
swamps are scattered over the country adjacent to the rivers. 
Until the Bio Apa is reached no hills are seen except for a 
few around Asuncion, but from the Bio Apa to Corumba 
chains of low hills covered with bush are met with. The 
passes through them by the Pan de Azucar (a conical hill of 
some 1600 feet above sea-level) are extremely pretty, and 
in many parts are covered with palms. Some of the most 
interesting sights on this trip were the numbers of colonies 
of breeding Terns, and I never cease to regret that, owing to 
the loss of my negatives, I was unable to get photographs 
of them. 
In working out my collections I have had access to a 
series of birds and eggs made by Miss I. G. Bunnacles at 
Los Ynglases in the Ajo district. I have included many of 
these in this paper, especially where a species is not repre¬ 
sented in my series, so as to make the list as complete as 
possible. I have to thank Miss Bunnacles for her kindness 
in allowing me to do this, and for the use of her notes. 
In all about two hundred species of birds are represented. 
In every case I have given references to the f Catalogue of 
SER. IX.—VOL. V. 
G 
