19. AGAMA. 367 



40. Agama caucasica. 



Stellio caucasicus, Gray, Cat. p. 255. 



Lacerta muricata {non Shaw), Pall. Zoogr. Ross.-As. iii. p. 20. 



stellio (non L.), Pall. I. c. p. 24. 



Stellio vulgaris {non Latr.), Men6tr. Cat. Pais. p. 64. 



caucasicus, Eichw. Zool. Spec. p. 187, and Faun. Casp.-Cauc. 



p. 80, pi. xiii. figs. 1-8; A. Dum. Cat. Meth. Pept.T^. 105, and 

 Arch. Mus. viii. p. 578 ; Be Fil. Viagg, Pers. p. 352 ; Blanf. E. 

 Pe7-sia, p. 322, pi. xx. fig. 1. 



persicus, Anders. Proc. Zool. Soc. 1872, p. 382, fig. 



Head much depressed ; snout not longer than the diameter of the 

 orbit ; nostril lateral, below the canthus rostralis, slightly tubular. 

 Upper head-scales smooth ; occipital not enlarged ; small conical 

 spinose scales on the side of the head near the ear, and on the neck ; 

 ear entirely exposed, larger than the eye-opening. Throat strongly 

 plicate ; no gular pouch. Body much depressed, with a very in- 

 distinct lateral fold ; nuchal and latero-dorsal scales very small, 

 granular ; vertebral region with enlarged flat, feebly keeled, rather 

 irregular scales ; flanks with enlarged, strongly keeled or spinose 

 scales ; no nuchal denticulation ; ventral scales smooth, distinctly 

 smaller than the enlarged dorsals. 150 to 160 scales round the middle 

 of the body. Limbs strong, with compressed digits ; the scales on the 

 upper surface of limbs much enlarged, strongly keeled, generally 

 spinose ; fourth finger slightly longer than third ; fourth toe a little 

 longer than third, fifth extending beyond first. Tail rounded, 

 depressed at the base, covered with rather large spinose scales 

 arranged in rings, two rings forming a distinct segment ; the length 

 of the tail does not equal quite twice the distance from gular fold 

 to vent. Male with a large patch of anal pores and an enormous 

 patch of ventral pores. Olivaceous above, with round yellowish 

 black-edged spots, the black frequently forming a network ; vertebral 

 region yellowish ; limbs with more or less distinct yellowish cross 

 bars ; lower surfaces yellowish in the female, blackish in the 

 breeding male. 



Total length 312 millim. 



Head 33 „ 



Width of head 30 „ 



Body 99 „ 



Fore limb 64 ., 



Hind limb 97 „ 



Tail 180 „ 



Caucasus to Persia. 



a. Hgr. c?. Elizabethpol. 



b-c. (S & hgr. Persia. Marquis G, Doria [P.l. 



d-h. J , 2 , & yg. Kohrud, N. of Isfahan. W. T. Blanford, Esq. [C.J. 



