greater space between the anal and caudal than between
the dorsal and the same fin. In the caudal there are twenty rays,
including two very short ones above, and the same number below.

The general colour of the specimen, which has been long in spirits, is
shining yellowish-brown with several round dots of azure-blue scattered
over the body. The cheek is crossed obliquely by a row of three spots.
The figure errs in representing the spots as dispersed over the cheek;
they are in fact ranged in a row. Length, 2 1/2 inches.

HABITAT. Coast of Australia.

Haslar Hospital, 28th October, 1845.

...

APPENDIX.

DESCRIPTIONS OF SOME NEW AUSTRALIAN REPTILES.

BY JOHN EDWARD GRAY, ESQUIRE, F.R.S., ETC.

...

Fam. SAURIDAE.

SILUBOSAURUS, Gray.

Head subquadrangular, raised in front, head-shields flat, thin, rather
rugose. Nasal shields ovate, triangular, rather anterior, with a groove
behind the nostril. Rostral shields triangular, erect. Supranasal none;
internasal broad; frontonasal large, contiguous; frontal and
interparietal small, frontoparietal and parietal moderate; eyebrow
shields, 4-4. Temples scaly, no shields between the orbit and labial
plates. Eyes rather small, lower lid opatic, covered with scales. Ears
oblong, with a large scale in front. Body fusiform, roundish thick;
scales of the back, broad, lozenge-shaped, keeled; keels ending in a
dagger point; largest on the hinder parts of the throat and belly;
transverse, ovate, 6-sided. Limbs four, strong. Toes elongate,
compressed, unequal, clawed; tail short, conical, tapering, depressed;
with rings of large, broad, lozenge-shaped, dagger-pointed, spinose
scales, with a central series of very broad 6-sided smooth scales
beneath.

This genus is intermediate between Cyclodus and Egernia, but quite
distinct from both. It differs from Tachydosaurus and Cyclodus in having
slender elongated toes like Egernia, in the scales being keeled, and in
there being no series of large plates beneath the orbit, and it is easily
known from Egernia by the tail being depressed and broad, instead of
conical and round. Like all the genera above named, it appears to be
peculiar to Australia.

The Silubosaure. Silubosaurus stokesii.

REPTILES. PLATE 1.

Olive brown, varied with black and large white spots; shields of the head
white, black-edged.

Inhabits Australia.

EGERNIA, Gray.

Head quadrangular, rather tapering in front. Head shields convex, rugose.
Nasal