of new Coleoptera from Australia. 193 
sembles that of some Diphucephale. It is narrowed in 
front, with the apex slightly reflexed or thickened, divided 
in the middle by a deep incision; the ocular canthus is 
very small, very slightly prominent, and slightly obtuse. 
The sides of the thorax are somewhat angular behind the 
middle ; the posterior angles are somewhat obtuse. The 
elytra are closely covered with rows of setiferous punc- 
tures,—each puncture has at its base a minute shining 
tubercle,—the interstices are extremely narrow, except 
the third, fifth and seventh, which appear as narrow, 
irregular, shining coste. 
Hab.— Cape York. B. M. 
Macuipius, MacLeay. 
The species of the genus are divisible into two sections : 
the first having the claws to the tarsi simple (M. spurius, © 
Kirby, &c.) ; the second having a delicate quill-like ap- 
pendage springing from the extreme base of the claw, and 
sometimes nearly equalling it in length (M/Z. atratus, Burm., 
&c.). A very similar appendage is seen in the claws of 
Pyronota. 
Section I. Claws without basal appendage. 
Mechidius spurius, Kirby. 
In the British Museum Collection there is a specimen 
from Swan River, which differs from the type specimen in 
having the forehead evenly convex (with no impression on 
the forehead as in the type); the thorax has the sides 
behind the middle nearly parallel, whereas in the type the 
thorax is slightly narrowed behind, the posterior angles 
are acute in the former, and slightly obtuse in the latter. 
The minute round tubercles at the base of each puncture 
on the elytra are very distinct in the type, less so in the 
Swan River specimen. The apex of the posterior tibia is 
more produced on the outer side than in any other species 
with which I am acquainted, the produced part is directed 
outwards. 
Mechidius latus, sp. nov. 
Nigro-piceus, latus, parallelus, depressus. Capite antice 
sat fortiter triangulariter emarginato, lateribus obliquis 
bisinuatis, genis prominulis obtusis. Thorace longitudine 
