Head depressed, truncated in front, covered with minute ovate scales; the front of the upper part lead-coloured, with a rather broad red band a little before the eyes, and a white crescent-shaped spot on each side immediately behind it, and then some obscure red shades just behind that; the back lead-coloured and blue, with six longitudinal series of irregular-sized red spots; belly whitish; tail rather longer than the body. Body one inch and five-eighths, head half an inch, tail two inches and a half long. This animal is very interesting, as being the second species of a genus recently established, which only consisted of P. cepedia, the Gecko cepedien of Peron; Cuv. Reg. Anim. 2 46. and 4 t. 5. f. 5.; which has somewhat the manner of colouring, but is very distinct from the Gecko ocellatus of Oppel. Genus TILIQUA. Gray. Pedes quatuor pentadactyli, poris femoralibus nullis. Caput scutatum; dentes in palato nulli. Truncus regulariter squamosus. This genus is distinguished from the true Skinks by the want of Palatine teeth, the shorter body, and the holes of the ears being furnished on their front part with a fringe. It differs from the succeeding Genus, Trachysaurus, in the head being covered with distinct flat plates, and the whole of the body with cut hexangular scales; the scales are harder than those of the true Skink, but not so distinctly bony as those of the Trachysaurus. 4. Tiliqua tuberculata. Gray. Lacerta scincoides. Shaw, Nat. Misc. Lacerta occidua. var. Shaw, Zool. iij. 289. Scincus tuberculatus, Merrem. Syst. Amph. 73. Scincoid, or Skink-formed Lizard, White, Journal 242. Icon. White, l. c. t. 30. Shaw, N. M. t. 179; Zool. iij. t. 81. This Lizard, which was first described in the excellent journal of Mr. White, does not appear to be uncommon on the coast of Australia, as there are several specimens both in the British Museum and in the collection of the Linnean Society, that were probably taken in the neighbourhood of the colony; the specimen before me was caught at Seal Island, in King George the Third's Sound. The scales of the whole of the body are broad, hexangular, with five or six longitudinal, slightly-raised ridges, which gradually taper, and are lost just before they reach the margin. The legs are short, thick; the toes of the fore-feet are rather short, the outer reaching to the middle of the second, the second and third equal; the fourth reaching to the last joint of the third, and the little one to the second joint of the fourth finger. In the hind foot the first and third toe are nearly equal, and only half as long as the second; the fourth only half as long as the third; and the fifth about half the length of the fourth toe. Genus TRACHYSAURUS. Gray. Pedes quatuor pentadactyli. Caput sub-scutatum, dentes in palato nulli. Truncus supra sqoamis crassis elongatis subspinosis, infra hexagonis membranaceis imbricatis, tectus. Cauda brevis, depressa.