21. AMPHIBOLTTEUS. 385 



Width of head 19 millim. 



Body 54 „ 



Fore limb 37 „ 



Hind limb 72 „ 



TaU 25 „ 



North-west Australia. 



ff. d- NicolBay. Mr. Duboulay [C.]. (Type.) 



6. Amphibolimis decresii. 



Grammatophora decresii, Gray, Cat. p. 253. . 

 Grammatophora decresii, Dum. ^ Bibr. iv. p. 472, pi, xli. bis. fig. 1. 

 Ctenopliorus decresii, Fitz. Syst. Rept. p. 83. 

 Amphibolurus decresii, Peters, Mon. Berl. Ac. 1863, p. 229. 



Habit stout. Head short ; nostril equally distant from the eye 

 and the end of the snout ; tympanum rather large ; small spinose 

 tubercles near the ear ; upper head-scales subequal, feebly keeled, 

 slightly larger on supraorbital region. Dorsal scales small, equal, 

 keeled ; a very small nuchal crest and a slight ridge along the middle 

 of the back ; lateral scales very small, smooth, intermixed with very 

 small tubercles ; ventral scales smooth. The adpressed hind limb 

 reaches the eye. A series of fifty pores extending along the whole 

 length of the thighs, interrupted on the prseanal region. Tail round, 

 nearly twice as long as head and body, covered with equal keeled 

 scales. Olive-brown above, sides spotted or striped with fulvous ; 

 throat vermiculate with brown ; chest sometimes black. 



Total length 230 millim. 



Head 2Q 



Body 54 



Fore limb 33 



Hind limb 65 



Tail 150 



South Australia. 



7. Amphibolurus pictus. 



Amphibolurus omatus, {non Gray) Peters, Mon. Berl. Ac. 1863, 

 p. 230. ' 



pictus, Peters, Mon. Berl. Ac. 1866, p. 88. 



Grammatophora picta, Ounth. Zool. Ereb. 8f Terr., Rept. p. 18. 



Habit stout. Head very short, snout shorter than the diameter 

 of the orbit ; nostril equally distant from the eye and the tip of the 

 snout ; tympanum large, nearly two thirds the diameter of the orbit ; 

 upper head-scales subequal, tubercular, smallest on supraorbital 

 region : a series of enlarged scales from the nostril to above the 

 tympanum, passing below the eye. Sides of neck strongly plicate ; 

 no dorso-lateral fold. Gular scales smaller than ventrals, smooth. 



2c 



