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1 GERBHOSAURUS b i b b o n j
2 g e b r h o s a t j r i j a l|S |F :ff||r.s
R e p t il ia .— P la te XXXVIII. F ig . 1. (M a l e .)
G. superne rubro-brunneus, lineis duabus sublatis et duabus angustis variegatis, his ad basin caudae,
illis versus apicem desinentibus; mento, gula, capitis lateribus, guttere, extremitatibusque anterioribus
interne minatis; pectore abdomineque griseo-albis; scuto occipitale rhombica.
L ongitudo e naso ad basin caudee 4 unc. 6 lin.; caudae 6 unc.
CoLOuaB-The upper surface of the head chesnut-brown; the sides and
under surface of the head and the throat anteriorly vermillion-red ; the back,
the sides of the body, the upper parts of the tail, and the outer surface of the
extremities intermediate between brownish red and deep orange coloured
brown. The back is variegated with four yellow lines and the tail with two,
which are the continuations of the two external lines of the back, and which
commence above and over the eyes. These lines are wider than the other two
which extend along the middle of the back, have a greenish tinge, and are
very narrow and slightly broken : the latter commence at the hind-head and
terminate at the base of the tail, and become less distinct as they recede from
the head. The throat posteriorly, the breast, belly, under surface of tail and
inner surface of extremities greyish white, the colour on the fore legs tinted
with vermillion-red. Eyes deep chesnut-brown.
F orm, &c.—Figure moderately slender and fusiform; . tail tapered to a
point. Head quadrangular and tapered towards the nose, which is obtusely
pointed. Body and base of tail quadrangular, the angles rounded, and the
back and sides, but especially the latter slightly convex; tail towards the
point cylindrical; internasal plate large, triangular, and diamond shaped.
Naso-rostral plates small roundish, and the nostrils towards their lower
margin. Fronto-parietal plates five-sided, sides unequal; parietal plates
three-sided, the inner side arched with a small diamond shaped occipital
plate situated partly between them and partly between the inner and hinder
angles of the fronto-parietal. Palpebral plates four, the two middle ones the
largest, and the whole margined externally by a row of narrow oblong plates
which form the upper edge of the orbit. Temporal plates small, subcircular,
and placed like stones in a pavement; scales of upper lip six, exclusive of
the rostral plate, the fourth, reckoning from before backwards, the longest;
M eatus exterrms small and vertical, broadest below, and anteriorly edged with
a slightly projecting scaly plate. Lateral duplicature of skin, which extends