7. MABUIA. 197 



tirely separates the parietals ; a pair of nuchals ; four labials 

 anterior to the subocular, -which is not much enlarged, and not or 

 scarcely narrowed interiorly. Ear-opening suboval, oblique, with 

 two or three large, obtusely pointed projecting lobules anteriorly. 

 Dorsal and nuchal scales feebly tricarinate, laterals smooth or nearly 

 so ; 30 scales round the middle of the body, dorsals largest. The 

 hind limb reaches the elbow or halfway between the wrist and the 

 elbow. Subdigital lamella sharply uuicarinate. Olive above, with 

 three yellowish-white, dark-edged dorsal streaks, vertebral broadest ; 

 a whitish, dark-edged lateral band from the upper lip to the groin ; 

 sutures between the labials black : lower surfaces whitish. 



niillim. millim. 



Total length 203 Fore limb 30 



Head 21 Hind limb 43 



Width of head 16 Tail (reproduced ). . 105 



Body 77 | 



South-west Africa. 



a. Ad, Hereroland. Berlin Museum [P.]. 



b. Ad. Damaraland. 



c. Ad. S. Africa. 



51. Mabuia ivensii. 

 Euprepes ivensi, Bocage, Jorn, Sc. Lisb. vii. 1879, p. 07. 



Head small, snout short and conical. Lower eyelid with a small 

 transparent disk. !N'ostril in the supero-posterior angle of the 

 nasal, which is in contact with its fellow, and foUowed by a post- 

 nasal ; supranasals narrow, in contact behind the nasals ; fronto- 

 nasal subtriangular, separated from the frontal by the praefrontals ; 

 two frontoparietals : parietals entirely separated by the interparietal ; 

 four upper labials anterior to the subocular, which is not narrowed 

 inferiorly. Three pointed lobules on the anterior border of the ear. 

 Body elongate, cyclotetragonal. 32 scales round the body ; dorsals 

 with three very distinct keels, laterals smooth. Limbs short : sub- 

 digital lamellae keeled. Tail more than twice as long as head and 

 body. Blackish olive above, with five longitudinal yellow streaks, 

 the median broadest ; lower surfaces pale blue. 



