5.) differs in the form of fore legs from those of the other Cicada.
TETTIGARCTA TOMENTOSA, pl.4, fig.

4, and 5 its pupa.
Of a brownish ash colour, the hairs on upper part of body short and deep brown, on the sides and under parts long and grey; prothorax varied with black, in front, two large patches covered with grey hairs, mixed with longer; elytra spotted and varied with brown, wings clear, somewhat ferruginous at the base.
Expanse of wings 3 inches 4 lines.
Hab.

Australia.
* * * * * DESCRIPTION OF TWO NEW INVERTEBRATED ANIMALS FROM AUSTRALIA, BY J.E.GRAY, ESQ., F.R.S.
Lamarck separated the mother-of-pearls shell (MARGARITA) from the swallow-tail muscles (AVICULA) on account of its more orbicular shape.
Other Conchologists have been inclined to unite them, as some of the species of AVICULA approach to the shape of the other genus.

The new one just received from Australia, which I am now about to describe, in this respect more resembles the Margarita than any before noticed; yet I am inclined to think that the pearl-shells deserved to be kept separate, as the cardinal teeth are quite obliterated in the adult shells, which is not the case with any AVICULAE I am acquainted with; and the young pearl-shells are furnished with a broad serrated distant leafy fringe, while the AVICULAE are only covered with very closely applied short concentric slightly raised minutely denticulated lamina, forming an epidermal coat on the surface.
1.

AVICULA LATA, pl.6.f.