^"'■.cu'^] Stuakt-Sutheklanu, Uirds of Piiyseguy Point. N Z . 137 



White Goshawk is hable to l)e mistaken for a White Cockatoo, 

 and it seems not improbable tliat this fact has given it an ad- 

 vantage l)y (MiabUng it to approach small birds, which do not 

 take it for a Hawk. It is noteworthy that the White Goshawk 

 and White Cockatoo have almost identical geographical ranges, 

 both being found in Tasmania, Eastern and Northern Australia, 

 and New Guinea, and both being absent from Western Australia 

 south of the Fitzroy River. 



To return to the white varit-ty of the J^lack Moor-Hen. The 

 occurrence of such an individual in the Rail family may be 

 regarded as of special interest in view of the former occurrence of 

 a Wliite (iallinule on Lord Howe Island. This bird was at one 

 time supposed to be a species of the New Zealand genus Notornis 

 (or Mantellornis), but Mathews showed in his " Birds of Australia " 

 that it was really a white species of Porphyrio, and Iredale, who 

 subsequently examined the only known specimen, at Vienna, 

 confirmed this view. 



Another White Gallinulc, from New Zealand, is in the Liverpool 

 Museum, and was made the type of a supposed species {Porphyrio 

 stcDileyi) ; but it is almost certain that this bird, which was sub- 

 sequently also referred to Notornis, is only an albino specimen 

 of Porphyrio melanotus. Probably the White Galhnule [Por- 

 phyrio albiis) of Lord Howe Island furnishes us with an example 

 of a white form which had entirely replaced the original-coloured 

 species from which it sprang. If the Grey Goshawk should 

 become extinct in Australia, the White Goshawk would provide 

 a similar instance, and this may be what has actually happened 

 in Tasmania. 



The White^winged Wrens. 



By W. B. Alexander, M.A., R.A.O.U., Keeper oe Biology, 

 Museum, Perth (W.A.) 



I H.WE been much interested in Mr. Campbell's various notes on 

 Maliiriis leucopterns and its alhes published in recent numbers of 

 The Emu (xvii., p. 177 ; xviii., p. 260 ; xix., p. i). Of the three 

 forms figured in the coloured plate (Plate I., vol. xix.), this 

 museum possesses three adult males of Maliiriis leucopterns from 

 Dirk Hartog Island, three adult males (including the type) of M. 

 tdouardi from Barrow Island, and 21 adult males of M. cyanotus 

 from a number of localities in Western Australia and one each 

 from South AustraUa and the Riverina (N.S.W.) (For the insular 

 forms, except the type, we are indebted to ^Messrs. H. L. White 

 and T. Carter.) 



The names given on the plate make it appear that tlu' three 

 forms are considered as distinct species. Mr. Campbell, in his 



