Mr. R. B. Sharpens Catalogue 0/ Accipitres. 119 



located on the outskirts of that subfamily*, agrees never- 

 theless with the Pernine genus Baza in having two distinct 

 teeth on the cutting-edges of the upper mandible, and also 

 resembles it pterylographically, as pointed out by Nitzsch 

 [vide Sclater's translation of that author, p. 66) f. 



Of the three known species constituting the genus Har- 

 pagus, one, H. diodon, extends as far north as British Guiana, 

 whence there is a specimen in the Norwich Museum, and as 

 far south as Rio Janeiro, an example from that locality being 

 in the possession of Messrs. Salvin and Godman, whose fine 

 series of the birds of this genus I have been kindly permitted 

 to examine. I have not met with this species from any 

 locality west of Brazil. 



As Mr. Sharpe does not give the colour o£ the irides in any 

 of the species of the genus Harpagus, I may mention that 

 Prince Maximilian of Wied has the following note respecting 

 H. diodon : — " legs orange-yellow ; irides yellow " %• 



I may add to Mr, Sharpens description of the immature 

 plumage of H. diodon, that the brown shaft-mai'ks on the 

 feathers of the breast vary considerably in breadth in dif- 

 ferent individuals, and that some young birds also exhibit 

 broad brown cross bars on the feathers of the flanks. 



In H. diodon the under wing-coverts, axillaries, and tibial 

 feathers are ferruginous at all ages ; and this colouring, though 

 sometimes a little less intense in immature than in adult 

 birds, affords a safe diagnosis in comparing them with the 

 young of the other two species, to which, except in this respect, 

 the young of H. diodon bear considerable resemblance. 



In immature specimens oi H. diodon there is frequently a 

 transverse barring of two shades of rufous on the thighs, 

 which I have not met with in any adult specimen ; and in one 



* If Harpagus be accepted as a Falconiue genus, it can only be so as 

 an aberrant one. Mr. Ridgway informs me that " it is most nearly related, 

 osteologically, to Ictiniar 



t It should, however, be mentioned that only one species {II. hiden- 

 tatus) appears to have been pterylograpbically examined 5 this was com- 

 pai'ed by Nitzsch with Baza lopJwtes. 



X Beitr. Orn. Bras. vol. iii. Abth. 1, p. 138. 



