THE BIRDS OF AUSTRALIA. 
forms may not stand as distinct species when our knowledge of this genus has 
increased.” 
An interesting bird may be here noticed. Layard and Tristram described 
a single specimen from New Caledonia as Mgotheles savesi. It is much 
larger and much darker than the Australian typical form but is of that 
affinity. I would recall that the Tasmanian bird is also darker, but does not 
appear to have noticeably increased in size ; while the Melville Island form 
is also darker than that of the mainland and is also appreciably bigger. It is 
thus apparent that in this genus island forms are generally darker and 
larger, conforming to a common rule in connection with island subspecies. 
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