least eight points, at first seemingly impressed, but when more
particularly examined they appear to be raised and to have an impressed
line round each of them. The head is black, the antennae and palpi
piceous, the third joint in the former is longer than the second or
third, the terminal joints are (more especially) furnished with pitchy
hairs. Long. lin. 8.

Habitat King George's Sound. Captain George Grey.

The genus Carenum was founded by Fr. A. Bonelli in the second part of his
Observations Entomologiques, read the 3rd May 1813 and published in the
Turin Transactions for 1813,* upon a specimen contained in the Paris
Museum of Natural History, which he regarded as the Scarites cyaneus of
Fabricius figured by Olivier.

(*Footnote. Memoires de l'Academie Imp. des Sciences etc. page 479.)

Guerin* has shown that the Arnidius marginatus Leach of the letter-press
to the Voyage de l'Astrolabe, page 33, is synonymous with Carenum cyaneum
of Bonelli, as he has seen the two specimens, the former of which is in
Dupont's collection.

(*Footnote. Crust. Arachn. et Ins. of the voyage of the Coquille
avant-propos page 7.)

M. Brulle* observes well that the Carenum cyaneum of Bonelli must be
different from the Scarites cyaneus of Fabricius, as both these authors
speak of its being blue (or deep blackish green) over the whole upper
surface, while in the C. cyaneum the blue is confined to the margin of
the elytra; besides Olivier expressly states that the Scarites cyaneus is
smaller than the Scarites subterraneus, which will not at all suit the
original specimen from which the learned Bonelli derived his generic
character. In the British Museum is the original specimen of Arnidius
marginatus (catalogued by Dr. Leach) presented by J. Huey, Esquire, and
it is very different both in size and in colour from the descriptions of
Fabricius and Olivier, and the figure of the latter,** all derived from
the original specimen formerly contained in the Banksian collection. Dr.
Boisduval's concise description (op. cit. page 2, page 23) answers the
specimen so named by Leach.

(*Footnote. Histoire Naturelle des Ins. par Messieurs Audouin and Brulle
5 page 64.)

(**Footnote. Coleopt. 3 Number 36 l. 2 f. 17.)

If the figure of Carenum cyaneum, given by Audonin and Brulle in their
Work (tome 5 plate 2 f. 6) be correctly drawn, it differs very
considerably from Leach's specimens of Arnidius, which is a broader
insect.

I have not been a