126 THE BIRDS OF CALCUTTA. 



{Palceornis magnirostris) which is nearly a pure 

 " lutino." This Andaman variety chiefly differs in 

 having a very much bigger bill, according to a very 

 general rule in island colonists among birds ; but why 

 -an insular habitat should result in a big nose is a 

 problem which science has yet to solve. 



