Birds of Central Patagonia, 391 
body of water in it_, and is apparently deeper : it is situated 
about six miles in a direct line from the first lake, from 
which it is divided by a high range of volcanic hills. After 
passing this lake, we followed the Sengel through many tor¬ 
tuous windings to a point I consider to be about lat. 45° 50' S., 
long. 69° 50' W. 
On the 19th November we commenced our return journey, 
retracing our steps to the point at which we had touched the 
Sengelen, which we reached on the 26th. We then followed 
this river nearly to its junction with the Chupat, in about 
lat. 43° 46' S., long. 69° 48' W.; and travelling along the 
valley of the latter we reached the colony on the 4th De¬ 
cember, 1877, after an absence of just six weeks. 
On the 7th December I started on an expedition to Ninfas 
Point, where, however, I observed nothing of note. 
After my return from there on the 12th, I was occupied 
till Christmas 'in collecting in the neighbourhood of the 
colony. 
On the 26th December I made an excursion to Tombo 
Point, about sixty miles to the south of Chupat, where I had 
heard there was a large gullery, of which more anon, return¬ 
ing on New Year’s day. Owing to some very brackish water 
I was compelled to drink whilst there, I was laid up for six 
weeks after my return, with, I believe, inflammation of the 
bowels, from which I was nearly recovered by the end of 
March. 
There being no vessel leaving the colony till the 20th 
April, I was unwillingly detained till that date; and on the 
30th we again anchored in the muddy waters of the La Plata. 
My communication to ‘The Ibis,^ mentioned above (January 
1877), contained notices of 62 species of birds observed in 
the Chupat valley and the neighbourhood. My present list 
extends this number to 89; and I do not think that many 
more will be found to occur in the district. 
The only bird seen which I was unable to identify was a 
Snipe, specimens of which occurred at the Sengel where it 
enters the lake, and in the valley of that river, where I took 
its eggs. I believe it to have been the same species as is 
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