380 



AGAMID^. 



Tail depressed, taperiBg to a rather blunt point, covered with, 

 strongly keeled scales ; its length equals nearly once and a half the 

 distance from gular fold to vent. Greyish above, reticulated with 

 blackish and spotted with whitish ; lower surfaces white ; generally 

 a black spot on the chest ; end of tail black inferiorly. 



Total length 184 miUim. 



Head 22 „ 



Width of head 22 „ 



Body 71 „ 



Fore limb 49 „ 



Hind limb 73 „ 



Tail 91 „ 



Borders of the Caspian Sea ; Southern Eussia ; Turkestan. 



a,b. <S & hgr. Russia. Dr. J. E. Gray [P.]. 



c. 2 '■ Island of Tschelekan. St. Petersburg Museum. 



d. cJ . Turkestan. M. Severzow [C.]. 



21. AMPHIBOLURUS *. 



Grammatophora, (non Steph.) Kaup, Isis, 1827, p. 621 ; Dum. ^ 

 Bibr. iv. p. 408 ; Fitzing. Syst. Jtept. p. 84 ; Gray, Cat. Liz. p. 251. 

 Amphibolurus, Wagl. Syst. Rept. p. 146 ; Wiegm. Herp, Mex. p. 17 ; 



FUi ■ ' 



_ J. c. p. 83. 

 Homalonotus, Fitzing. I. c. 

 Ctenophorus, Fitzing. I. c. 



Tympanum distinct. Body more or less depressed. Dorsal 

 crest absent or feebly developed. Wo gular sac ; a strong trans- 

 verse gular fold. Tail round or feebly compressed. Praeanal and 

 femoral pores. 



Australia. 



Synopsis of the Spedes. 

 I. The hind limb stretched forwards reaches beyond the orbit. 



A. Ventral scales keeled ; tail not compressed. 



No nuchal crest ; nostril below the can- 

 thus rostralis 1. maculatus, p. 381. 



A low nuchal crest; nostril upon the 



canthus rostralis 2. imbricatus, p. 382. 



B. Ventral scales smooth or very feebly keeled. 



No nuchal crest ; tail not compressed . . 3. ornatus, p. 382. 

 A nuchal crest ; tail a little compressed ; 



dorsal scales intermixed with enlarged 



ones 4. cristatus, p. 383. 



* Grammatophora jugularis, Macleay, Proc. Linn. Soc. N. S. W. ii. 1877, 

 p. 104. — Cape Grenville. 



