118 MK. G. A. BOULENGER ON THE REPTILES 



M. Lataste at Sidi Guenao, oa the hills between Limagues and Kebili, at Tamesmida, 

 Bir-el-Ahmar, Zarzis, Sidi Haich, El Hammam des Beni Zid, Nebech el Dib, Wed 

 Zitouna, and Gafsa. 



The range of A. inermis extends eastwards to Egypt. 



A good figure accompanies Reuss's description, Mus. Senckenb. i. 1834. 



2. Agama tournevillii, Lataste, 1880. (Plate XIII. fig. i.) 



Habit more slender than in the preceding. Head one fourth longer than broad, 

 snout sloping gradually. Nostril directed upwards and backwards, pierced on the 

 canthus rostralis in the posterior part of a small flat nasal. Upper head-scales smooth, 

 convex ; occipital not enlarged ; no spinose scales ; a very slight fringe of pointed scales 

 on the upper border of the ear, which is smaller than the ear-opening. Male with a 

 large gular pouch. Body not or but feebly depressed, covered above with equal, 

 rhomboidal, strongly keeled, not mucronate scales ; lateral and ventral scales a little 

 smaller, strongly keeled. Tibia a little shorter than the skull ; third finger slightly 

 shorter than fourth, fifth not extending quite as far as first ; third toe much shorter 

 than fourth, fifth not extending quite as far as first. Tail twice and a half as long as 

 the distance from gular fold to vent, distinctly compressed, covered with equal keeled 

 scales. Male with a row of anal pores. Sandy coloured above ; a transverse broven 

 band between the eyes, two longitudinal ones from the occiput along the nape, and two 

 others on each side of the head ; back with regular longitudinal series of quadrangular 

 transverse brown spots separated by rather indistinct longitudinal light lines ; tail with 

 dark annuli ; lower parts white ; gular pouch grey. 



From snout to vent 94 millim., tail 162. 



Only two specimens are known, a female collected by M. Lataste at Wargla, and a 

 male, labelled " Sahara," which has been for many years in the British Museum. The 

 latter difliers from the former in the less depressed body, the slightly larger dorsal 

 scales, the rather larger ear-opening, and the presence of a gular sac. 



.3. Agama bibeonii, A. Dumeril, 1851. (Plate XIV. fig. 1.) 

 A. colonorum, Gervais, Guichenot, Strauch. 



Head a little longer than broad. Nostril tubular, directed outwards and backwards, 

 pierced just below the canthus rostralis. Upper head-scales smooth or indistinctly 

 keeled ; occipital scale considerably larger than the surrounding ones ; eleven to 

 fourteen upper labials ; sides of head and neck with groups of spines ; ear-opening 

 larger than the eye-opening. Throat strongly plicate ; no gular pouch. Body depressed, 

 covered above with large, rhomboidal, mucronate, imbricate scales, with strong keels 

 converging towards the vertebral line ; a slight nuchal crest ; ventral scales small, 

 smooth. Tibia as long as the skull ; third and fourth fingers equal ; third and fourth 

 toes nearly equal, fifth extending beyond first. Tail about twice as long as the distance 



