- 
194 Mr. C. O. Waterhouse’s descriptions 
duplo latioribus, crebre fortiter punctato ; lateribus ar- 
cuatis, pone medium paululo angustatis ; basi utrinque 
fortiter sinuato, angulis posticis bene acutis. Elytris tho- 
race haud latioribus, lateribus fere parallelis, depressis, 
striato-punctatis, interstitiis alternatis costatis. 
Long. 53 lin. ; lat. 3 lin. 
This species is peculiar for its broad depressed form. 
The thorax is very slightly narrowed at the base, the pos- 
terior angles are unusually acute, owing to the base of the 
thorax being strongly sinuate on each side. The elytra 
have the alternate interstices distinctly costate. 
Hab.—Melbourne. B. M. 
In the British Museum Collection are several specimens 
which differ from the above described in having the punc- 
tures on the thorax crowded, but in other respects they 
agree ; the difference is possibly only s sexual. 
Mechidius variolosus, W. Macleay. 
This species (if I have correctly determined it) is easily 
distinguished by its clear brown colour, and by the long 
hair with which it is clothed. In this and the following 
species the posterior tarsi are long, and the anterior tibize 
scarcely dentate. 
Hab.—Sydney. B. M. 
Mechidius longitarsis, sp. nov. 
Castaneus, sat nitidus, depressiusculus. _Clypeo haud 
profunde triangulariter exciso. Thorace sat crebre punc- 
tato, postice vix angustato, angulis posticis acutiusculis, 
basi fortiter bisinuato. ‘ibiis anticis angustis, vix tri- 
dentatis. Tarsis posterioribus sat gracilibus, articulo 
primo elongato duobus sequentibus conjunctis eequali. 
Long. 4 lin. ; lat. 24 lin. 
This species is very close to the preceding. They have 
in common the castaneous colour, nearly the same form ; 
the anterior tibiz are unusually little dilated; the apex 
is only very slightly bifid, and the usual upper third tooth 
is nearly obsolete. In both species the posterior tibie are 
slender, very slightly produced at the apex; the tarsi are 
slender, and the basal joint is unusually long (equal to 
the two following taken together in the present species). 
The head is rounded at the sides and in front, with the 
