469 



(/) LACERTILIA. 



By F. R. Zietz. 



[Contribution from the South Australian Museum.] 



The collection comprises thirteen species, all of which 

 have a wide distribution and are usually met with in the 

 arid interior. Some species vary very considerably both in 

 colour and markings, such colour variations being clearly 

 an adaptation to environment. Specimens of Tymfanocryptis 

 lineata, for example, taken on the red gibber country, 

 resemble the colour of the rocks and stones so closely that 

 members of the Expedition found difficulty in locating the 

 lizards until they moved. Those obtained on other ground 

 were likewise tinted according to their surroundings. The 

 specimen of Egernia whitii is also reddish-brown above, which 

 colour harmonizes with the red sand country where it was 

 found. Field notes made by Mr. Waite are appended within 

 brackets to the species in respect to which they refer. 



GECKONIDAE. 



Heteronota bynoei, Gray. 



The larger of two specimens from Killalpaninna, 

 apparently a male, having four praeanal pores, is very pale 

 in colour. The upper-surface of the head is creamy- white, 

 the body and limbs of a similar ground-colour, covered with 

 minute brown spots, which give rise to faint markings where 

 they are more numerous and denser. A brown band extends 

 across the shoulders, and faint irregular markings are scat- 

 tered over the sides of the head and the upper-surface of 

 the body and limbs. 



In the smaller specimen from the same locality the prae- 

 anal pores are absent, and like the remainder has alternate 

 whitish and dark-brown transverse bands on the upper-surface 

 of the body and tail. 



In all the five specimens collected, the tubercles on the 

 upper-surface are arranged in regular longitudinal rows. 



Gehyra variegata, D. and B. 



The fourteen specimens collected are all of a grey ground- 

 colour with dark and light markings. Some have irregular 

 narrow blackish transverse bands, margined posteriorly with 

 a white line or row of white dots. One specimen from Cooper 



