VERTEBRATE FAUNA OF HOUTMAN's ABROLHOS. 461 



Diplodactylus spinigerus, Gray. The types, in the British Museum, 

 are from the Abrolhos. We obtained two specimens on West Wallaby 

 Island. 



Diplodactylus vittatus. Gray. The types of D. ornatus, Gray, regarded 

 by Boulenger as a synonym of this species, were collected on Houtmau's 

 Abrolhos. 



Peropus variegatus {Bum. ty Bibr.). A specimen in the British Museum 

 is from Houtmau's Abrolhos. 



Pygopodid*. 



Delma FRASERi, Gray. Fraser's Slow-worm. We met with two indi- 

 viduals of this species on West Wallaby Island. 



Lialis burtoniS, Gray. Burton's Slow-worm. The British Museum lias 

 a specimen from Houtmau's Abrolhos. We met with one example on West 

 Wallaby Island. 



Agajiid.1. 



Ajiphibolurus barbatus (Cuv.). ■ Jew Lizard. Plentiful on East and 

 West Wallaby Islands and North Island, especially amongst the sand-hills. 

 Often observed in the bushes a couple of feet from the ground. 



. SciNCIDiE. 



Egernia whitei (Lacep.). The British Museum has a specimen from the 

 Abrolhos. 



Egernia kingi (Gray). Common on West Wallaby Island, chiefly in the 

 region covered by flat slabs of limestone, under which it lurks during the 

 da) time. Also met with on East Wallaby Island and the Pigeon Islands. 



Egernia stokesi (Gray). Very plentiful wherever there are loose rocks 

 on the East and West Wallaby Islands and Pigeon Islands. Sometimes as 

 many as four or five individuals will be found by turning over a single stone. 

 At the time of Stokes's visit it was evidently common on Pat Island, and 

 Campbell also met with it there in 188'J. I think that it has probably been 

 destroyed on that island by the introduction of cats. 



Trachysaurus rugosus, Gray. Stump-tailed Lizard. The British 

 Museum has a specimen from Houtmau's Abrolhos. 



Lygosoma lesueuri, Dum. Sf Bibr. The British Museum has a specimen 

 obtained on the Abrolhos. 



