ii. 129;

on _Oriolus melanocephalus_, ii. 178; on _Palaeornis javanicus_, ii. 179; on the genus _Ardetta_, ii. 179; on the peregrine falcon, ii. 180; on young female birds acquiring male characters, ii. 180; on the immature plumage of birds, ii. 185; on representative species of birds, ii. 190; on the young of _Turnix_, ii. 202; on anomalous young of _Lanius rufus_ and _Colymbus glacialis_,