406 AGAMID^. 



back ; a large black spot on the anterior 



face of the thigh 5. hardiviekii, p. 408. 



Caudal spines large, longer than the inter- 

 spaces between them, subequal ; enlarged 



tubercles on the back ; 20 transverse rows 



of scales on the middle of the belly, on a 



space corresponding to the length of the 



head 6. asmussii, p. 409. 



Caudal spines large, subequal ; enlarged 



tubercles on the back ; 30 to 40 transverse 



rows of scales on the middle of the belly, 



on a space corresponding to the length of 



the head 7. loricatus, p. 409. 



1. Uromastix ornatus. 



Uromastix ornatus, Gray, Cat. p. 261. 

 Uromastix oraatus, Miipp. Atlas N. Afr., Mept. p. 1, pi. i. ; 

 Bihr. iv. p. 538. 



Dum. Sf 



Anterior border of ear not denticulated ; no spines on the back 

 of the head and neck. Scales small, equal. Nine or ten femoral 

 and four pra3anal pores on each side. Tail strongly depressed, with 

 complete aunuli of large scales which are not separated by smaller 

 ones ; lateral caudal scales strongly spinose ; inferior caudal scales as 

 long as but narrower than the upper. Sand-coloured above, uniform 

 or with brown marbhngs or cross bands of orange brown-edged round 

 spots. 



Total length 298 millim. 



Head 33 



Width of head 29 



Body 130 



Fore limb 65 



Hind limb 82 



TaU 135 



Egypt; Syria. 

 a, b. 2 & yg. 



Egypt. 



J. Burton, Esq. [P.], 



2. Uromastix acanthinurus. 



Uromastix acanthinurus, Gray, Cat. p. 262. 

 Uromastix acanthinurus, Bell, Zool. Journ. i. 1825, p. 457, pi. xvii. ; 



Ihim. Sf Bibr. iv. p. 543 ; Guichen. Expl. Sc. Alg., Mept. p. 8 ; 



Strauch, Erp. Alg. p. 30. 



dispar, B-upp. Atlas N. Afr. p. 5. 



temporalis, Valenc. C.B. Ac. Paris, xxxix. 1854, p. 89. 



Anterior border of ear denticulated. Scales small, much larger 

 than in the following species, there being about ninety on the middle 

 line of the belly, from the gular fold to the praeanal pores ; no enlarged 

 tubercles on the flanks. Nine to eleven femoral and four or five 

 prseanal pores on each side. Tail strongly depressed, above with 



