114 Mr. J. O. Westwood’s Descriptions 
XXII. Descriptions of some Coprophagous Lamellicorn 
Beetles from New Holland. By J. O. Wesrwoop, 
F.LS. 
[Read Ist November, 1841.] 
Tue insects described below belong to that division of the family 
of the sacred beetles, (Scarabeide, MacLeay, Ateuchites, auct. al.,) 
which is distinguished by having the head and thorax destitute of 
horns; the scutellum obsolete; the intermediate tibiae with two 
spurs, and they, as well as the posterior tibiae, not dilated into an 
elongated triangle at the tip, as in the Coprides. 
It is a remarkable peculiarity in Entomo-geography, that whilst 
the arid deserts of Africa produce great numbers of coprophagous 
Scarabeide of large size, New Holland is almost entirely destitute 
of these insects; and of these, the largest appears to be the 
Circellium hemisphericum, Péron, (Pl. VILL. fig. 3,) 
figured by Guérin in the ‘“ Iconographie du Reéegne Animal, In- 
sectes,” pl. 21, fig. 3, (and described in the texte, p. 76,) as 73 lines 
(15 millem.) long. This insect has been formed by Reiche into 
the genus Corrorcus, in the “ Revue Zoologique, par la Société 
Cuvierriene” for July in the present year (1841, p. 211). 
M. Reiche, in his memoir on this group of insects, published 
since the above was written, states that in the specimen belonging 
to the Jardin des Plantes the antennz and part of the trophi are 
wanting. His figure of the insect is much more elongate-oval 
than that of M. Guérin; it is, however, evidently not broad 
enough, according to the dimensions given by M. Reiche. This 
author has detected short but distinct tarsi in the fore feet, and a 
single spur at the extremity of the middle tibiz. He has, how- 
ever, represented the posterior tibiz as terminating on the inside 
in an acute spine as long as the calcar; whereas M. Guérin figures 
it as truncated, obliquely emitting the calcar near the middle of 
the truncation: and he describes the elytra as very convex, with 
six elevated smooth coste, each of which is accompanied on each 
side by a row of small punctures, in which respect it approaches 
Tessarodon, from which, however, it is separated by its possessing 
only one spur to the middle tibiz. 
Another species, remarkably distinct in having the hind angles 
of the thorax acute and prolonged backwards, and being 3} lines 
long, has been mistaken for the Ateuchus Hollandie of Fabricius, 
by Dejean, (who has formed it into the genus AuLacium, adopted 
