HABITAT. Coast of Australia.
Haslar Hospital, 28th October, 1845.
APPENDIX 3.
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.