FURTHER NoTES ON AUSTRALIAN COLEOPTERA, WITH 
DESCRIPTIONS ОҒ NEW GENERA AND SPECIES. 
By the Rev. T. BLACKBURN, В.А. 
[Read October 4, 1904.] 
SLV. 
LAMELLICORNES. 
TROGIDES. 
These insects form the sixth of the seven "tribes" into 
which Lacordaire divided the first of his main divisions cf 
the Lamellicornes. He separated that tribe from all tis 
others on the ground of there being only five ventral seg- 
ments in the abdomen of the insects that compose it. The 
tribe is widely spread over the world, but not rich in genera. 
Its members are for the most part scavengers, feeding upon 
offal of all kinds, and therefore are, on the whole, to be re- 
garded as useful to mankind. As might be expected from 
their habits, the species are easily disseminated from one 
land to another, and some of them have become cosmopoli- 
tan. In the following pages I have to record the occurrence 
in Australia of a species (not previously recorded in Aus- 
tralia) whose home is in Europe. 
Five genera of Trogides have been recorded as Aust ralian 
— Megalotrox, Troc, Liparochrus, Antiochrus, and Acantho- 
cerus. The last named is distinguished from the four others 
by its body being contractile. Its place in the Australian 
catalogue rests on the foundation of a single species (A. spini- 
cornis), described by Fabricius, who, however, does not seem 
to have been very confident as to its habitat. 1 have never 
seen any Australian Acanthocerus, and am not aware of any 
reliable authority for attributing 4. spinicornis to this con- 
tinent. Consequently I have nothing definite to say about 
it. The validity of one of the remaining genera ( Antio- 
chrus) has been challenged by the Baron de Harold, who 
considers it identical with Liparochrus, but it appears to 
me to be very satisfactorily distinct, and I have therefore 
retained the name. Megalotrox differs from the normal 
structure of Trox in the great size of its hitherto described 
species, in its being apterous (with elytra soldered together), 
in its small scutelium deeply sunk in the base of the elytra, 
in the wide epipleuræ of its elytra, in its short metasternum. 
Nevertheless I am in doubt of the generic validity of this 
aggregate on account of the presence in my collection of a 
‘specimen from Tasmania which is intermediate between it 
