182 Lacertidse. 



gular scales imbricate, passing gradually into the ventral plates, 22 

 in a straight median line. 



Dorsal scales rhombic-lanceolate, strongly keeled, acutely pointed, 

 a little smaller than upper caudals ; lateral scales a little smaller, 

 smooth towards the ventral plates, into which they pass gradually ; 

 ventral plates rounded-hexagonal, not broader than long, in 8 longi- 

 tudinal and 25 transverse series ; 36 scales and plates round the 

 middle of the body. Preanal region covered with irregular scales. 



Scales on limbs smaller than dorsals, strongly keeled. 11—12 femoral 

 pores. Subdigital lamellae tricarinate, 19 under the fourth toe. 



Caudal scales strongly keeled, upj^er similar to dorsals, 26 in the 

 fourth whorl behind the postanal granules. 



Bronzy olive above, with a few small transverse blackish spots in 

 three longitudinal series on the nape and two on the body ; a black 

 streak from the nostril to the eye, and another on the edge of the 

 mouth ; a white, black-edged streak from below the eye, through the 

 ear, to above the axil ; white, black-edged ocellar spots on the posterior 

 part of the back, on the hind limbs, and on the ttiil. Lower parts 

 whitish. 



Measurements (in millimetres) : 



From end of snout to vent ' . . . .38 



„ ,, ,, fore limb . . .15 



Length of head ...... 10 



Width of head 

 Depth of head 

 Fore limb 

 Hind limb 

 Foot 



6 



4 



13 



21 



11 



This species is based on a single male specimen, probably half- 

 grown, from the East Coast of Lake Tanganyika, presented to the 

 British Museum by Mr. W. H. Nutt in 1896. 



The feebly striated upper head-shields and the arrangement of the 

 nasal and supraocular shields are my reasons for regarding I. 

 tanganicana as the most generalized species of the genus. 



2. ICHNOTROPIS BIVITTATA. 



Ichnotropis bivittafa, Bocage, Jorn. So. Lisb. i, 1866, p. 43 ; Peters, 

 Eeise Mossamb. iii, p. 48 (1882). 



Ichnotropis capensis, part., Bouleng. Cat. Liz. iii, p. 78 (1887) ; 

 Bocage, Herp. Ang. p. 30 (1895). 



