APPENDIX. 
13 
below the last, all square ; frenal plate square, preocular small, somewhat triangular. Plates of upper 
lip, exclusive of rostral, 6 ; of lower lip, exclusive of mental, 5 ; mental plate, semicircular ; post- 
mental plate, three or five sided, with a projecting 1 angle behind ; behind this plate three large plates, 
edging 1 the labial plates, the first pair internally contiguous. Scales of the body and tail six-sided, and 
arranged in longitudinal rows. Outer surface of lower eyelid coated with small plates. Preanal plates 6 ; 
the two middle ones rather large, the two on each side smaller. The colour of the upper surface of the 
head, the back, and the upper surface of the tail, clear yellowish brown ; the sides of body and tail a 
lighter tint of the same colour, distinctly tinged with green ; many of the scales of the back, and all of 
the sides, with a transverse greenish black or liver-brown spot in the centre, forming longitudinal 
rows. Colour of the under parts, wine-yellow. Length from nose to anus, 3 inches ; the tail being 
imperfect, the length cannot be given ; but it may be presumed, from what exists, that it is about the 
length of the body. The colours given are those observed in a specimen which has been preserved for 
years in spirits. 
Inhabits arid situations in the interior of Southern Africa, and is found among or under stones. 
LITHOPHILUS BICOLOR, n. s. 
Figure very slender. Head quadrangular, contracted before the eyes; nose rounded; sides 
vertical. Body somewhat four-sided ; back slightly convex ; sides perpendicular. Tail subquadrangular 
towards base, cylindrical towards apex, tapered and pointed. Nostrils, in hinder edge of rostral plate, 
and their hinder margin, formed by a narrow ring distinct from the plate. Rostral plate semicircular ; 
nasal plates subovate, internally contiguous. Naso-rostral plate rather irregularly six-sided. Frontal 
plate large, somewhat five-sided ; the anterior side straight, the two hinder sides oblique, and form, 
where they unite behind, in the middle of the head, a rounded point. Interparietal plate large, some- 
what heart-shaped, the apex of the frontal plate received into its notch; behind, towards its apex, a 
slight angle on each side. Parietal plates long 1 , narrow, and widest behind ; a long, narrow, transverse 
plate behind each parietal plate. Palpebral plates 4, and a small one under the last ; they increase in 
size forwards, the anteriormost the largest and subrhomboidal, the others quadrangular. Frenal plate 
square ; preocular plate small, somewhat triangular. Scales of body and tail six-sided, longest trans- 
versely. Preanal scales 6 ; the two middle ones very large, the two on each side very small. The 
colour of the upper surface of the head anteriorly livid brown ; the remainder, and the back and upper 
surface of the tail, intermediate between greenish white and pale flesli-red ; the back and tail variegated 
with two longitudinal lines of closely-set brownish red dots. These lines commence at the hindhead, 
and are gradually lost towards the apex of the tail, where it acquires a light brown colour ; hinder 
surface of the head finely dotted with brownish red. Sides of body and tail light brownish red ; 
under parts the same colour, only much paler. Length from nose to base of tail 1 inch 5 lines ; length 
of tail 1 inch ; width of body ^th of an inch. The scales of the body in this species are shorter trans- 
versely, and broader in the opposite direction than those of LitJiopkilus worn at -us. The form of the 
plates of the head generally is very different, and the body is quadrangular instead of subcylindrical. 
Inhabits the western coast of Southern Africa, and the specimen, the only one I possess, or have 
seen, was procured under a large stone on the side of a rocky ravine in Little Namaqualand. 
AGAMA COLONORUM, Baud. Bum. et Bib. Erpet. Gener. tom. iv. page 489. Agama occipi- 
talis, Gray, Cat. of Lizards, British Museum, page 256. 
Inhabits the Western Coast of Southern Africa, particularly the rocky mountains of Great and 
Little Namaqualand. 
E 
