of new Coleoptera from Australia. 197 
narrowed in front, with the sides much rounded; the pos- 
terior angles are only indicated by a small acute tooth, 
behind which the base is very slightly sinuate ; the punc- 
tures on the surface are small and round, and crowded, 
each puncture having a minute, round, yellow scale in the 
centre. Elytra emarginate at the base ; ; the punctures 
which form the striae are narrow, and there is a minute 
tubercle at the base of each puncture; there is the ap- 
pearance of a slight impressed line on the inner side of 
the third, fifth and seventh rows of punctures. Pygidium 
thickly punctured, longitudinally raised in the middle. 
Anterior tibiz slightly broader towards the apex, tri- 
dentate on the outer side, the basal one small and distant 
from the other two. 
Hab.—Port Bowen. B. M. 
Mechidius excisus, sp. nov. 
Elongatus, niger, subopacus. Capite antice leviter 
emarginato; lateribus obliquis, leviter bisinuatis, reflexis, 
genis prominulis obtusis. horace longitudine ? latiori, 
convexo, crebre fortiter punctato ; lateribus ene ante 
angulos posticos semicirculariter excisis, angulis posticis 
acutis. Elytris deplanatis, postice paulo latioribus, striato- 
punctatis, punctis elongatis, interstitiis planis. 
Long. 43 lin.; lat. 2 lin. 
Head thickly punctured, in front with a shallow trian- 
gular emargination; the angle before the eye is not very 
prominent, obtuse, but not rounded. The thorax is slightly 
narrowed in front, thickly (somewhat closely) and strongly 
punctured; the sides are arcuate, with a small semi-circular 
emargination before the posterior angles, which are acute 
and slightly prominent. The anterior tibiz are stout, 
wider at the apex, with a small tooth in the middle of the - 
outer edge and two strong approximate teeth at the apex. 
Hab.—Port Bowen. Bb. M. 
Mechidius hopeanus, of Westwood, differs from the 
above in having the head in front less emarginate, 
the sides less directly oblique and the cheeks rounded. 
There is also no distinct angle before the posterior emar- 
gination of the side of the thorax, as there is in M. excisus. 
Lastly, the upper tooth on the anterior tibia is much closer 
to the apical teeth than in the above described insect. 
Hab.—Moreton ae Clarence River. B. M. 
TRANS. ENT. SOC. 1875.—PART II. (SEPT.) P 
