384 AGAMID^. 



along the back ; ventral scales small, smooth or very feebly keeled. 

 Limbs and digits very long, the adpressed hind limb reaching beyond 

 the tip of the snout ; the length of the foot equals that of the fore Umb ; 

 scales similar to those on the back, A. series of fifty pores extending 

 along the whole length of the thighs, scarcely interrupted on the 

 prseanal region. Tail slender, slightly compressed, twice as long as 

 head and body, in its basal portion with a slight upper ridge ; caudal 

 scales equal (scattered, slightly enlarged flat ones at the base of the 

 tail), keeled. Dark olive above, head and neck varied with darker 

 and lighter : tail with regular dark and light annuli ; middle of 

 throat, chest, and lower surface of limbs black. 



Total length 287 miUim. 



Head 24 „ 



Width of head 18 „ 



Body 68 „ 



Fore Kmb 44 „ 



Hind limb 96 „ 



Tail 195 „ 



West Australia. 



a. c? . West Australia. Mr. Gilbert [C.j. (Type.) 



5. Amphibolums caudicinctus. (Plate XXIX. fig. 2.) 



Grammatophora caudicincta, G'dnth. Zool. Erebus Sf Terror, Rept. 

 p. 19. 



Habit moderate. Head rather large ; snout as long as the dia- 

 meter of the orbit, with swollen canthus rostralis ; nostril directed 

 slightly upwards, much nearer the eye than the tip of the snout ; 

 tympanum large, two thirds the diameter of the orbit ; upper head- 

 scales subequal, keeled, smallest on supraorbital region. Sides of 

 neck feebly plicate ; no dorso-lateral fold. Gular scales smaller 

 than ventral, smooth. Body moderately depressed, covered with small 

 uniform keeled scales, smallest on the back ; on the back the keels 

 slightly converge towards the vertebral line ; a very small nuchal 

 crest and a slight ridge along the middle of the back ; ventral 

 scales small, smooth. Limbs and digits long, the adpressed hind 

 limb reaching nearly the tip of the snout ; scales on upper surface of 

 limbs a little larger than dorsals, A series of thirty-three pores ex- 

 tending along the whole length of the thighs, interrupted on the prae- 

 anal region. Tail compressed, slightly keeled above, once and a half 

 as long as head and body ; caudal scales equal, keeled. Uniform pale 

 brown above ; tail with regular black rings, narrower than the inter- 

 spaces between them ; throat slightly mottled with greyish ; chest 

 black. 



Total length 203 millim. 



Head 24 ,. 



