106.  Phreniscus australis, Dumeril and Bibron Erp.  Gen. 8 725.  Bombinator australis, Gray Proceedings of the Zoological Society.  Inhabits New Holland.

107.  Breviceps gouldii; Gray Annals of Natural History 1841.  Breviceps heliogabali, Gray, tab. 1 f. 1.  Inhabits Western Australia.

I have been induced to add to the foregoing list the following observations on the more obscure and hitherto unknown genera and species.

RONIA, Gray.  Head rather shelving, shielded with one transverse frontal and two large vertebral plates, the hinder largest; the rostral plates large, with two unequal superciliary plates.  The nasal plate triangular, interposed between the rostral plate and the frontal ones, with the nostrils in its centre; loreal plates two, square; labial plates large; ears none, only a very indistinct sunk dot in their place.  Body cylindrical; tail conical, tapering.  Scales smooth, ovate, imbricate, those of the belly 6-sided.  The front limbs very small, rudimentary, undivided; the hinder limbs moderately developed, ending in two very unequal toes, with distinct claws.

35.  Ronia catenulata, Gray, t. 4 f. 1.

Back grey, with eight series of small black dots, one dot on the centre of each scale; cheeks black speckled; sides and beneath whitish.

Body 3 1/2, tail 2 1/2 inches.

Inhabits Western Australia.  Mr. J. Gould.

The scales under the tail are rather larger, and the spots on the tail are also rather larger than those on the back.

38.  Lialis burtonii, t. 3 f. 1.  Gray Proceedings of the Zoological Society 1834 134.  Dumeril and Bibron H. R. 831.

Pale brown, back with three longitudinal brown streaks, each occupying half of two series of scales; the centre streak divided into two over the nape and head, uniting together again over the tip of the nose.

Inhabits Western Australia.  J. Gould.

Family Pygopidae.

Head short, with two or three pairs of narrow frontal shields, similar to, and behind the nasal shield, with two odd large vertebral shields; nostrils oblong, in the suture between the outer angle of the nasal shield and the front loreal shields; ears distinct, tympanum sunk; eyes surrounded with a series of scales; belly with two or four series of broad 6-sided ventral shields; tail with three series of broader shields, the central the broadest; limbs two, rudimentary, undivided, scaly, on the side of the vent; throat covered with small scales; lower labial plates large.

Pygopus.  The scales of the back keeled, with a series of numerous praeanal pores; pupil round; the hinder limbs elongate.

Delma.  The scales smooth; praeanal pores none; pupil elliptical, erect; hinder limbs short.

42.  Soridia lineata, t. 3, f. 2.