12 MR. WESTWOOD ON THE AUSTRALIAN SPECIES 
present in English collections and books. The species, moreover, which it will be ad- 
visable to regard as the type of Bolboceras, will be Se. quadridens, Linn., as that was the 
species dissected by Mr. Kirby. 
In 1819 Mr. MacLeay published the description of his genus Elephastomus in the first 
part of his ‘ Hore Entomologice,’ founded upon the singular Australian Scarabeus pro- 
boscideus, first described by Schreibers in the 6th volume of the * Linnean Transactions.’ 
In this strange insect the crown of the head is extended forwards, so as to push the ordi- 
nary front part of the head, including the clypeus, mandibles and labrum, quite under- 
neath it; just as if the human forehead were dilated over the entire face, and the nose and 
mouth pushed between the chin and the throat; with this difference, that in the insect 
the horizontal upper lip and mandibles become perpendicular, whilst the opposite would | 
be the case in a human head so deformed. Referring again to the structure of the maxillee, 
we find Mr. MacLeay’s description of those of Elephastomus, ** Maxillæ cornes, arcuate, 
intüs dente acuto et ad apicem lacinià obtusà ciliis spinosulis armate," incorrect, omitting 
_ to notice the upper portion of the inner lobe of the maxille ; whilst the figure given of it, 
pl. 2. fig. 10 5, is still more incorrect, omitting both the horny teeth of the lower lobe. In 
this, however, and all its essential characters, this insect approaches so closely to Bolbo- 
ceras Australasie, that, long ago, I had attached to a figure of ZI. proboscideus the follow- 
ing note: “ Is not Bolboceras australasie of Kirby the female? The box-like clava of their 
antennæ agrees ;” and in Dr. Klug’s excellent Monograph on the genera Athyreus and 
Bolboceras, published in the * Transactions of the Berlin Academy’ for 1843, we find Sca- 
rabeus proboscideus given as the first species of Bolboceras, with Bob. Australasie as its 
lary palpi and the identical structure of the two mandibles, which are bifid at the tips. 
The number of the species of the genus Bolboceras was considerably increased by the 
late Mr. Bainbridge, who published a short paper on some of the’ Australian Species, from 
the Collection of the Rev. F. W. Hope, in the ‘Transactions of the Entomological Society’; 
in their several works; and especially by Dr. — 
which is now also incorporated that of M. Gory. 
The circumstance of 
