1917-] Dirk Hartog Island and Peron Pemnsida. 571 



The number of species and subspecies of birds observed 

 both on Dirk Hartog Island and the Peron peninsula was 

 surprisingly small. 



On Dirk Hartog the total was 55, being 

 Land-birds 38, 

 Waders and Sea-birds 17. 



On the Peron the total was 52^ being 

 Land-birds 32, 

 Waders and Sea-birds 20. 



The following new subspecies are described in this 

 paper: — Calamanthus c. -peroni from Peron Peninsula, 

 Oreoica c. lloydi and Anthus a. hartogi from Dirk Hartog. 

 In addition the following four subspecies from Dirk Hartog 

 have been recently described by myself or Mr. Mathews : — 

 Calamanthus c. hartogi, Sericornis m. hartogi, Stipiturus m. 

 hartogi, Diaphorillas t. carteri. 



The birds mentioned in this paper can by no means be con- 

 sidered a full list of those occurring in the above localities, 

 particularly as I was not in Shark's Bay during June, 

 July, August, and September (except the last three days), 

 and these four winter months are the season when birds are 

 most plentiful in the mid-west region, many species appear- 

 ing after the winter rains and leaving before the summer 

 begins. No Zoster ops lutea balstoni, Wilsonavis tenebrosa 

 christojihori, or Alistei'ornis lanioides carnarvoni were seen 

 in the mangi'oves on the Peron, although a good lookout 

 was kept for them, nor were any Haliastur Indus leuco- 

 sternus observed in Shark's Bay, yet these four birds are 

 numerous in the mangroves south of Carnarvon. Perhaps 

 that is the southern limit of their range. 



Dirk Hartog might be called an island of Wrens, as at 

 least ninety out of every hundred land-birds seen are 

 Wrens. 



The nomenclature and classification is that of Mr. G. M. 

 Mathews' ' List of the Birds of Austraha,' 1913, to which 

 reference should be made. 



