19. AGAMA. 339 



Head convex, subcordiform. Nostril tubular, turned upwards 

 and backwards, pierced on the canthus rostralis in a convex nasal. 

 Upper head-scales smooth ; occipital not enlarged ; a spine-like 

 scale in front of the ear, but no others on the head ; ear entirely- 

 exposed, quite as large as the eye-opening ; male without gular 

 pouch. Body rounded, a little depressed; dorsal scales very small, 

 juxtaposed or subimbricate, equal, smooth or feebly keeled, and not 

 larger than the ventrals, which are smooth. Limbs long and thin, 

 digits short ; tibia longer than the skull ; third finger longer than 

 fourth, fifth not extending as far as second ; third toe a little longer 

 than fourth, fifth extending as far as first. Tail more than twice 

 as long as the distance from gular fold to vent, compressed, covered 

 with keeled scales which are much larger than those on the body. 

 Males with a row of six large anal pores. Colour very variable ; 

 head sometimes blue. 



Total length 239 millim. 



Head 27 



Width of head 23 



Body 67 



Fore limb 50 



Hind limb 81 



Tail 145 



Egypt. 



a-b, c. S' Egypt. J. Burton, Esq. [P.]. 



2. Agama siuaita. 



Agama sinaita, Heyden, in Riipp, Atlas N. Afr., Rept. p. 10, pi. iii. ; 



Dum. 8f Bibr. iv. p. 509. 

 Podorrboa (Pseudotrapelus) sinaita, Fitzing. Syst. Rept. p. 81. 

 Trapelus sinaita, Gunth. Pi'oc. Zool. Soc. 1804, p. 489 ; Tristr. Faun. 



Palest, pi. xvi. fig. 3. 



Head convex, subcordiform. Nostril tubular, turned upwards 

 and backwards, pierced on the canthus rostralis in a convex nasal. 

 Upper head-scales smooth ; occipital not enlarged ; a small spine- 

 like scale in front of the ear, but no others on the hinder part of 

 the head ; ear entirely exposed, larger than the eye-opening ; male 

 without gular pouch. Body rounded, moderately depressed ; dorsal 

 scales small, equal, rhomboidal, imbricate, keeled; lateral and 

 ventral scales very small, smooth. Limbs very long and thin ; digits 

 short ; tibia much longer than the skull ; third finger longer than 

 fourth, fifth not extending as far as second ; third toe longer than 

 fourth, fifth extending as far as or a little further than first. Tail 

 more than twice as long as the distance from gular fold to vent, 

 compressed, covered with keeled scales which are larger than the 

 dorsals. Males with a row of four to eight large anal pores. Olive 

 or grey above, with a few more or less distinct dark cross bands ; 

 head blue ; collar-pit black ; belly dirty white. 



z2 



