66 BONELLI’S EAGLE. 
the head, nape, throat, belly, thighs, and under tail 
coverts a rich cinnamon brown, streaked on the under 
parts with long narrow longitudinal black bands on the 
shafts of each feather. The head and nape are marked 
with dark longitudinal stripes. Back and tail dark 
brown; quill feathers darker, shghtly marked with white. 
Three other specimens (females) have a plumage in- 
termediate between the two, doubtless in consequence 
of age, as it varies much every year. According to 
Marmora and Temminck the beak in the adult is 
horn-colour; cere and feet livid yellow; iris brown. 
Birds of the year have the iris brownish yellow. 
Birds of the third year have the iris a clear yellow, 
and the tail without the dark border at its extremity, 
and marked with nine or ten transverse bands. ‘There 
are seven large scales on the last jot of the median 
toe in the adult, and four on that of the external and 
internal. 
