Mr. R. B. Sharpe's Catalogue of Accipitres. 461 



remarks in 'The Ibis' for 1865, pp. 27, 28, and for 1866, 

 pp. 246,247, also to Professor SchlegeFs, in the Supplementary 

 Catalogue of the ' Museum des Pays-Bas,' A. Accipitres, 

 pp. 119-123 (in which some interesting details as to variation 

 of size are also given), to Lord Tweeddale's, in his '' List of 

 the Birds of the Philippine Archipelago," published in the 

 Transactions of the Zoological Society, vol. ix. p. 142, and 

 lastly to a paragraph devoted to this subject at p. 314 of Mr. 

 Sharpens volume. 



Some differences are also perceptible in the colour and 

 intensity of the dark shaft-marks on the rufous mantle, these 

 vaiying in different localities from reddish brown to black; 

 and another very variable feature in the plumage of these 

 birds will be found in the transverse, but usually more or 

 less imperfect, brownish-black bars which occur in most 

 adult specimens on the inner webs of the primaries, secon- 

 daries, and tertials, or some of them, and sometimes also on 

 those of the rectrices other than the central pair : these bars 

 are, for the most part, assumed at the time of the bird first 

 attaining its adult dress ; but I have seen one moulting spe- 

 cimen (marked N in the following list) in which these bars 

 have evidently been assumed on the primaries at a later 

 period ; I suspect, however, from other specimens which I 

 have examined, that they usually disappear with advan- 

 cing age. 



Some additional information may perhaps be gleaned fi'om 

 the following memoranda of details, taken from the adult, or 

 nearly adult, specimens of H. indus, H. intermedins, and 

 H. girrenera preserved in the Norwich Museum, and which 

 I here distinguish by a letter for facility of reference : — 



A, from Poonah, India. This, as regards the dark shaft- 

 marks, may be taken as a typical adult example of H. indus ; 

 the transverse bars exist on the secondaries and tertials, but 

 not elsewhere. 



B, from Cashmere. A moulting specimen, the old plu- 

 mage being adult as well as the new, but greatly faded in its 

 rufous portions, which have assumed in consequence a curious 

 tinge of pale pinkish brown ; the old secondaries and tertials 



