19. AGAMA. 351 



vertebral line by a X-shaped whitish marking; lower surfaces 

 whitish, with wide-meshed blackish network. 



Total length 134 millim. 



Head 19 „ 



Width of head 20 „ 



Body 52 „ 



Fore limb 38 „ 



Hind limb 61 „ 



TaU 63 „ 



South Africa. 



"• ? • Cape of Good Hope. Sir A. Smith [P.]. 



18. Agama aculeata. 



Agama aculeata, Qray, Cat. p. 257. 

 Agama aculeata, Merr. Tent. p. 53 ; Bum. ^ Bibr. iv. p. 499. 

 Trapelus (Psammorrhoa) hibronii, Fitzing. 8yst. Rept. p. 81. 

 Agama hispida, part., Peters, Mon. Berl. ^c. 1870, p. 112. 



Head short, convex, subcordiform. Nostril slightly tubular, 

 pierced on the canthiis rostralis or just below, in a convex nasal. 

 Upper head-scales smooth or feebly keeled ; forehead slightly con- 

 vex ; occipital enlarged ; sides of head posteriorly and neck with 

 spinose scales ; ear-opening larger than the eye-opening. Male 

 without a regular gular pouch. Body depressed, covered with 

 moderately large, imbricate, strongly keeled scales intermixed with 

 strongly enlarged ones ; a feeble but very distinct dorsal and nuchal 

 crest ; ventral scales perfectly smooth. Limbs moderate ; tibia as 

 long as the skuU (to occiput) ; third finger very slightly longer than 

 fourth ; fourth toe slightly longer than third, fifth extending as far 

 as first. Tail nearly twice as long as the distance from gular fold 

 to vent, rounded in the female, a little compressed in the male, 

 covered with strongly keeled scales. Male with a row of prseanal 

 pores. Yellowish or olive-brown above, with a double series of 

 large brown spots on the back ; lower surfaces whitish, the throat 

 with longitudinal brown lines in the female, blackish blue in the 

 breeding male. 



Total length 252 millim. 



Head 24 „ 



Width of head 23 „ 



Body 81 „ 



Tore limb 48 „ 



Hind limb 69 „ 



Tail 147 „ 



South Africa. 



a. iS. S. Africa. 



h-d. 2 & hgr. Damara Land. 



«-/• ? • ? 



g. Skeleton. S. Africa. Sir A. Smith [P.]. 



