of South African Kept lies. 143 
Pedes quatuor, dactyli quinque ; digit! palmarum breves, 2dus et 
3ius fere sequales, posteriorum longi, 2dus longissimus. 
Porifemorales. 
1. Pleurotuchus typicus. Supra brunneus, dorso duobus lineis 
longitudinalibus albis et duobus nigro variegatis ; lateribus maculis 
subflavis nolatis ; subtus Jlavo-albus, 
Back and sides brownish, the former with two longitudinal lines 
on each side, the outermost white and narrow, the innermost black 
and rather broader. Both commence at the outer corners of the eyes, 
run in contact with each other, and the white one terminates near 
the commencement of the tail, while the other extends nearly half 
way to its point, and there, after uniting with its fellow of the oppo- 
site side, gradually disappears. Sides variegated by small, some- 
what square, spots of a yellowish cast, and the ground colour is 
clouded and mottled with darker tints, which in some places ap- 
proach to black. Belly yellowish white ; tail tinted with brownish, 
brownish-red, and yellowish-white, but disposed in no regular order. 
Legs and toes the same colour as the body, without variegations. Fe- 
moral pores sixteen in number ; ten longitudinal rows of plates on 
belly. Length from nose to anus four inches, from anus to tip of tail 
seven inches and a-half. This lizard inhabits the dry sandy flats of 
Little Namaqualand, and is rather abundant towards the mouth of 
the Orange river, where it is called by the native Hottentots Ouru- 
kalma-aap. Its motions are very quick, and when discovered upon 
open ground runs towards the roots of the first bush it can find, and 
from thence if pursued into any hole it can perceive, but if one can- 
not be discovered, it even attempts, and frequently succeeds, in for- 
cing itself under loose sand, so as to escape detection. 
2. Pleurotuchus Desjardinii. Supra sub-brunneus, dorso Jasciis 
duobus longitudinalibus, exteriore albo, interiore nigro, maculis ni- 
gris maculatis ; lateribus lineis verticalibus nigris et albis notatis ; 
subtus flavo-albus. 
Colour of back and sides brownish, with two longitudinal lines or 
stripes on each side of the former, the outermost white, and the in- 
nermost black ; those of each side in direct contact, commence be- 
hind the eye and terminate on the root of the tail; along the centre 
of the back an irregular row of black spots, each marked with one 
or more dots of white. Sides variegated by narrow vertical stripes 
alternately black and white, below yellowish white ; legs greenish 
brown, variegated with a few white spots ; femoral pores about 
twelve in number ; eight longitudinal rows of plates on belly. 
Length from nose to anus three inches and a-half, from anus to tip 
