A Revision of the Lizards of the Genus Nucras, Gray. 203 



series from the median line the broadest, the outer small, and 32 to 37 

 transverse series. Praeaual region covered with irregular small plates 

 or with a large plate, which may be longer than broad or broader than 

 long, bordered by one or two semicircles of smaller plates ; sometimes 

 with two subequal broad plates, one in front of the other. 



No transversely enlarged plates on the lower surface of the fore 

 limb, or a series of a few feebly enlarged plates. Scales on upper 

 surface of tibia smaller than dorsals. 10 to 15 femoral pores on each 

 side. 16 to 20 lamellar scales under the fourth toe. 



Caudal scales forming whorls of nearly equal length, upper moder- 

 ately broad, the median pair broader, strongly keeled, obtusely pointed 

 behind, with distinct sensory pits. 



Young pale brown above, with 8 or 10 longitudinal series of white 

 black-edged ocellar spots, with traces of a white vertebral streak on the 

 nape and anterior part of the back (PI. VI, fig. 1) ; sides of head and 

 sometimes of neck with black and white vertical bars ; hind limbs and 

 tail orange or reddish. 



The ocelli usually persist in the adult (PI. VI, fig. 2) which is greyish 

 or reddish brown above, and the black rings may expand into large 

 spots with a tendency to run together into cross-bars (PI. VI, fig. 3), 

 in which case the white eyes may become much reduced or disappear, 

 leaving nothing but more or less regular black cross-bars (PI. VI, figs. 

 4, 5) ; head with black spots above, with black spots or vertical bars 

 on the sides, the latter sometimes extending to the throat ; these black 

 bars may be accompanied by five very conspicuous white bars between 

 them, the first behind the eye, the fourth behind the tympanum ; tail 

 with black spots, or with ocelli as on the body. Lower parts white, 

 uniform or with more or less numei-ous round black spots. 



Measurements (in millimetres) : 



c? ? 



'T 2. ~~3*. 4~ 5. 6. 

 From end of snout to vent . . 96 94 81 112 89 88 



fore limb . 30 27 24 35 26 24 



Length of head . . 19 19 17 20 16 16 



Width of head . . 12 12 11 14 10 11 



Depth of head . . 11 11 11 13 10 11 



Fore limb ... . 25 24 21 27 23 22 



Hind limb. . . 35 35 31 39 29 29 



Foot 18 17 15 19 15 15 



Tail . . . . 215 195 155 225 145 155 



1. Port Elizabeth. 2. Damaraland. 3, 5. Krugersdorp. 4. S. 

 Africa. 6. Pirie Bush, near King Williamstown. 



