622 MR. A. ANDERSON ON THE \M.&y 7, 



my collection contains light-coloured examples (referable to the first 

 stage) with the typical double bands, with one band, and with no 

 band at all, and, lastly, that some of these very birds, while yet in 

 the first stage, have a profusion of darkish-brown feathers, so cha- 

 racteristic of the second stage. 



Since the separation of these two Eagles according to their plu- 

 mage, I have noticed that there is an appreciable difference, very 

 slight it is true, between the nostrils of the two species, and that 

 the osteological characters too, as far as I have yet gone into the 

 matter, tend to separate them. In the sternum of A. bifasciata will 

 be found apertures about the size of a twopennypiece, while in A. 

 crassipes these are altogether wanting. 



AOUILA HASTATA, LeSS. (JUV.). 



In my former notes I alluded to only two distinct stages in the 

 plumage of this Eagle, viz. the "spotted" and "uniform plain 

 brown." I have now to add a description of the first or "streaked" 

 stage of the juvenile bird, in which dress both Mr. Brooks and I 

 have obtained some six examples. 



Nothing can exceed the remarkable contrast between young A. 

 ncevia, with its purple-black mantle covered all over, more or less, with 

 spots or blotches, and the delicate yellow-brown of A. hastata, streaked 

 longitudinally on the under plumage, and having minute specks 

 which are confined entirely to the ridges and bend of the wings. 



I have now been able to add this bird to the avifauna of the dis- 

 tricts of Cawnpore, Etawah, and Mainpuri ; so that it is by no 

 means the rarity now that it was considered only a short time ago. 



Description of a typical juvenile bird. — The young bird is gene- 

 rally of a pale yellow-brown, and the lower surface from breast down- 

 wards is extensively streaked with fulvous white. The secondaries 

 and tertials are profusely barred, as also the tail to the very tip, 

 which is pale or whitish. The carpus and ridges of the wing are 

 profusely blotched with fulvous white. In some specimens of the 

 juvenile bird these spots are either very minute or entirely absent ; 

 the amount of spotting, therefore, cannot be a true index of age. 

 Again, in some examples there are neither spots on the wings nor 

 any striatum on the lower plumage ; but these may be passing into 

 what I have described as the second or " spotted stage," when the 

 bird will assume a darker brown colour, and the spots on the wings 

 will then appear with a more decided character. 



The head of the young bird is of a uniform pale brown, without 

 any light tips to the feathers, which older birds frequently have. 

 The terminal upper tail-coverts are brownish white, the ends being 

 almost quite white ; these are barred on the outer webs with pure 

 white. 



The lining of the wing is generally fulvous white, mottled with 

 brown. The tarsus is dull brownish white, slightly freckled with 

 pale brown ; the tibial plumes are brown, a good deal mottled with 

 brownish white. 



The perfectly adult bird (my third stage) is of a uniform dark 



