240) 
is commonly spread, for the eggs to rest on. The eggs are 
normally three in number; but I have twice seen only two eggs 
in a nest, in both cases fully incubated. The only ege that I 
now possess, (which I owe to Captain Cock,) is a broad and 
very perfect oval in shape. In texture, it is rough and pitted, 
but it nevertheless has a slight gloss. It is a perfectly un- 
spotted egg, and though in places somewhat soiled and discolour- 
ed, must, when fresh, have been a nearly, pure, milk white. 
Held up against the light, the shell is even a darker green than 
that of H. Leucoryphus, in fact it is almost black. Whether 
this character is general, or peculiar to the single specimen I 
now possess, I cannot of course decide. I have had many of 
these eggs in former years; but I did not then, unfortunately, 
collect specimens. 
Five eggs, of which I have recorded measurements, varied 
from 2°72 to 2°8 in length, and from 21 to 2:15 in 
breadth. 
Captain Cock sends me the following note :— 
“The nest of Polioaetus Ichthyaectus is a very large structure 
of sticks, in fact the biggest nest that I have known of. I 
found one on the top of a high thorn tree, on the banks of a 
river, When I first visited the nest, it was empty, but the 
bird was sitting on the tree near it. I again visited the nest 
about a fortnight later, and found three eggs in it. The nest 
was about 53 feet in height, about 44 in diameter, and but 
slightly hollow. There were a quantity of leaves in the nest 
quite fresh. The leaves belonged to some small shrub (the 
leaf itself was a very small one) and were evidently placed 
there to make a softer bed for the eggs. The birds had built 
in the same tree for an immense time, but at length the tree 
was blown down, and they built on the next biggest tree to it, 
and have continued for the last few years to nidificate there. 
The eggs were dirty white, similar in shape and size to the one 
sent to you (above described.) The birds did not exhibit any 
anger when their eggs were taken, but the female flew round 
and round a few times.” 
Captain Unwin remarks, 
“J found a nest of Polioaetus Ichthyaetus in the neighbour- 
hood of Huzara on the 27th February, 1869. The nest was 
situated in a large, Tulip tree, about 35 feet from the ground. 
It was built of sticks, stubble, weeds, and coarse grasses, and 
was about 23 to 5 feet in diameter. It contained two young 
birds. The villagers stated, that the old birds arrived every 
year, about November. The probable age of the young was 
four or five weeks; they were unable to fly, though one was 
