1 899.] LIZARDS FROM BRITISH EAST AFRICA. 97 



parietal ; temple granular, with a feebly enlarged tympanic plate. 

 A distinct gular fold ; 25 gular scales on a line between the collar 

 and the third pair of chin-shields ; collar even-edged, composed of 

 10 plates. Dorsal scales rhomboidal, keeled, juxtaposed or sub- 

 imbricate ; laterals a little smaller ; 40 scales across the middle of 

 the body ; 2 or 3 lateral scales correspond to the length of a ventral 

 plate. Ventrals tetragonal, broader than long, in 8 longitudinal 

 and 24 transverse series ; the plates of the series next to the median 

 nearly twice as broad as the one on the inner side and once and a 

 half the one on the outer side ; the outermost plates very small. 

 Praeanal with a large plate in front of it. The hiud limb reaches 

 the collar-fold. Scales on upper surface of tibia smaller than 

 dorsals. Femoral pores 16-17. Upper caudal scales strongly 

 keeled, with truncate or obtusely pointed posterior border. Brown 

 above, darker on the sides, w^hich are stellate with small white, 

 black-edged ocelli ; upper surface of head and back with small 

 black spots ; a large black spot on each upper labial ; uniform 

 whitish beneath. 



millim. milliui. 



Total length 175 From end of snout to 



Head 19 vent 70 



Width of head 12 Pore limb 26 



From end of snout to Hind limb 37 



fore limb 29 Tail (reproduced) . . 105 



A single male specimen from ' Eavine Station,' Mau Mountains, 

 on the main route from Mombasa to Lake Victoria, at an 

 altitude of 7500 feet, was presented to the British Museum by 

 Mr. F. J. Jackson, C.B. 



The discovery of a Lacerta allied to L. muralis in tropical Africa 

 is one of very great interest. So far, this essentially Paljearctic 

 genus was represented south of the Atlas by a single somewhat 

 aberrant species, L. echinata Cope, from the coast of Gruinea. 



The same collection has yielded three specimens of a Lizard for 

 which I propose the name of 



CHAMiESAURA ANNECTENS. 



It connects C, didactyla Blgr., with which it agrees in the shape 

 and proportions of the head and body and the didactyle hind limb, 

 with C. tenuior Gthr., by having only 24 scales round the body 

 and a single femoral pore. 37 to 39 transverse rows of scales 

 between the occiput and the base of the tail. Yellowish or pale 

 brownish, with four pale brown stripes, the median pair edged 

 with black on the outer side ; lower surface of head and body 

 white. 



millim. millim. 



Total length 45 Fore limb 45 



Head 17 Hind hmb 9 



Width of head .... 8 Tail (reproduced) . . 300 



The extreme forms of this genus are shown to be more and 

 rEOC. ZooL. Soc— 1899, No. VIL 7 



