DEOMASTIX OCELLATUS. 127 
Uromastix ocellatus, Licht. (Plate XII.) 
Uromastix ocellatus, Licit. Doubl. Berl. Mus. 1823, p. 107; part., Fitz. Syst. Rept. 1843, p. 86; 
Peters, Mon. Berl. Ak. 1862, p. 271 ; part., Peters, Sitzb. Ges. naturf. Fr. 1882, p. 45 ; 
Blgr. Cat. Liz. B. M. iii. 1887, p. 499 ; Anderson, Herp. Arabia & Egypt, 1896, p. 101. 
Uromastix ornatus (non Heyden), Gray, Cat. Liz. B. M. 1845, p. 261 ; Blgr. Cat. Liz. B. M. i. 
1885, p. 406. 
13 J, 15 2 , and 1 juv. Neighbourhood of Suakin. 
1 ? . Wadi Haifa. Major Henry d' Alton Harkness. 
Ear with no enlarged conical scales at its anterior border. Body-scales very small, 
quadrangular, flattened, 260 round the middle of the body including the ventrals ; 
about 95 to 100 ventrals between the inguinal and gular folds; no enlarged tubercles 
on the flanks or on the fore limb, but with a few irregularly shaped pointed scales on the 
thigh, and enlarged conical tubercles on the tibial portion of the limb. Tail gradually 
tapered to a point, much depressed. Caudal segments strongly spinose laterally. 
In life, the colours are very vivid in the male ; in some the entire upper surface of 
the head and body is rich light red vermiculated with blackish, whereas the head in 
some is dark olive-green spotted with red, and in others red spotted with green. 
Seven or eight transverse bands or chains of round white spots on the back, each spot 
margined with black and its centre frequently occupied by a dusky yellowish spot. 
Sides of the neck, body, and tail dark green, which in some males is prolonged upwards 
on to the back between the chains of spots. Upper surface of the limbs dusky green. 
Throat and chest generally light green, or vivid blue from the chin along the throat; 
the under surface of the body yellow, with the green of the sides prolonged inwards on 
to the belly in transverse bands, or without markings. Upper surface of the tail bluish 
green in some, suffused with red in others ; spines greenish ; under surface of limbs 
and tail whitish. 
In the females the colours are much less vivid, there never being any bright red on 
the back, and the tail being uniformly dusky yellow and green. 
The young animal is dusky brown, and in it the general arrangement of the colour 
is well seen. Eight dusky bands of varying extent are prolonged inwards towards the 
mesial line of the back, those on the neck being little more than spots. They are 
separated from one another by very pale dusky areas, on which the white black-edged 
ocelli occur. The tail is paler than the body ; the underparts are whitish, spotted with 
dusky ; three black bands radiate downwards from the eye. 
Measurements of an adult male : — Snout to vent 150 ; vent to tip of tail 138 millim. 
This is the smallest of the African species of the genus and the most brilliantly 
coloured. It is very common in some parts of the Suakin plain, judging from the 
number of specimens brought to me. I kept a few of them alive for some weeks in 
the Zoological Garden in Cairo, feeding them on clover, on which they appeared to 
