CROMASTIX ^GTPTIUS. 129 
broken up citron-yellow cross-bands, the scales of these areas with dark points ; tail 
greyish green shading into reddish ; limbs dark grass-green marbled with yellow. 
Digits greyish brown. (Heyden.) 
General colour, in alcohol, yellow ; transverse, irregularly outlined, dusky bars on the 
sides, eight in number, from the neck to the base of the tail, but not meeting on the 
mesial line of the back ; the upper surface of the back vermiculated with reddish lines 
tending to form ocelli. Head suffused with deep purple on the sides, and below the 
eye with purple, tending to form vertical bars. Under surface of the head from the 
chin to the gular fold bluish green, broadly reticulated with dark purple and dark blue ; 
the sides of the belly and under surface of the limbs yellowish, covered with bluish- 
black reticulations. Upper and under surface of tail bright yellow. 
6 . Snout to vent 210 millim. ; vent to tip of tail 175 millim. 
The specimen of this lizard in my possession came from an altitude of 500 metres 
in the granitic region of Mount Sinai. 
Dumeril and Bibron in their description of U. ornatus say erroneously that the type 
of the species was from North Africa, whereas its author, Heyden, not Ruppell as 
stated by them, mentions that it came from Mohila, on the east coast of the Red Sea. 
They also record that in the Paris Museum there were two magnificent examples 
sent from Egypt by Botta, the travelling naturalist to the Museum. According to the 
dimensions given by them, it would appear, if their identification of Botta' s specimens 
with U. ornatus was correct, that this species attains to a very great size, viz. to 
nearly three feet in length. 
Its presence in Egypt has yet to be verified. It occurs not only in the Sinaitic 
Peninsula and Arabia proper, but extends also into the southern desert of Palestine 
according to Canon Tristram. 
In appearance it is remarkably like U. (Ajwroscelis) henti. 
Ueomastix ^egtptius, Hasselq. & Linn. (Plate XIV.) 
The Dhab or Dab, Shaw's Travels, 1738, p. 250. 
The Dhab, Bruce's Travels, v. App. 1790, p. 198. 
La Fouette-queue d'£gypte, Cuv. Reg. An. ii. 1817, p. 32. 
Lacerta wgyptia, Hasselq. & Linn. Iter Palsest. 1757, p. 302 ; Forsk. Descr. An. &c. 1775, p. viii 
et p. 13; Donndorff, Beytr. iii. 1798, p. 136. 
Stellio spinipes, Daud. Kept. iv. 1803, p. 31 ; Is. Geoff. St.-Hil. Descr. de l'Egypte, Hist. Nat. i. 
?1827, p. 125, pi. 2. fig. 3 ; Griffith's An. King. ix. 1831, p. 121, plate. 
Urornastix spinipes, Merr. Syst. Amph. 1820, p. 56 ; Heyden, Riippell's Atlas nordl. Afr., Kept. 
1827, p. 5 ; Is. Geoff. St.-Hil. Diet. Class. d'Hist. Nat. xv. 1829, p. 627 ; Wagler, Syst. Amph. 
1830, p. 145 ; part., Gray, Syn. Kept. Griffith's An. King. ix. 1831, p. 61 ; Wiegm. Herp. 
