768 



it was not found to be so numerous as on my trip from Oodna- 

 datta to the MacDonnell Ranges during tlie previous year. It 

 burrows in the sand, and is often seen looking out of the 

 burrow, evidently watching for prey. It is not so fleet as other 

 members of this group, and often falls a victim to hawks.] 



Amphibolurus rufescens, S. and Z. 



Three adult specimens of this little-known lizard were 

 collected, two at the Everard Range and one at Wantapella 

 Swamp. The type, an adult, and also two immature speci- 

 mens, were taken by Mr. R. Helms on the Elder Exploring 

 Expedition in 1891, (i) at Mount St. Thomas, Birksgate Range, 

 about 100 miles west of the present record. Two of the recent 

 specimens have complete tails, and thus enable me to give the 

 correct caudal measurements, the tail in the type being in- 

 complete. Unfortunately the largest specimen collected by 

 Captain White also has a damaged tail, a portion of it being 

 reproduced: it would have been much longer if uninjured. 

 The number of femoral pores varies, but in all other respects 

 these specimens agree with the type. To my knowledge only 

 six examples are known to science, and they are contained in 

 the South Australian Museum collection. 



Total length ... 



Head 



Body 



Tail 



Width of head .. 



Front leg 



Hind leg 



Fern, and Preanal Pores 





a 



245 



mm. 



27 



mm. 



70 



mm. 



148 



mm. 



(incomplete) 



18 



mm. 



38 



mm. 



84 



mm. 



24dex 



21 sin. 





h 



282 



mm. 



25 



mm. 



67 



mm. 



190 



mm. 



18 



mm. 



38 



mm. 



80 



mm. 



28 



-28 



c ' Ti/pe 

 265 mm. i 228 mm. 



22 mm. ' 22 mm 



j 

 56 mm, | 66 mm. 



I 



187 mm. | 140 mm. 

 (incomplete) 



17 mm. 18 mm. 

 36 mm. 35 mm. 



76 mm. 78 mm. 



I 



31-31 1 29-29 



[This lizard was found on or near red granite rocks, and 

 its colouration harmonizes wonderfully with its surroundings. 

 It is such a fast runner that the only way to procure specimens 

 was to shoot them. When running it carries its body erect, 

 touching the ground with the hind feet only, and maintaining 

 its balance with the long slender tail.] 



'D Proc. 

 2 and 2a. 



Roy. See, S.A., xvi., 1893, p. 164, pi. vi., figs. 



