1396 FURTHER NOTES ON AUSTRALIAN COLEOPTERA, 
and small punctures intermingled. The prothoracic horns in the 
male spring from the sides of the excavation a little below the 
middle of their length and are directed almost straight forward. 
This species resembles B. laticorne, Mad. The male may be 
distinguished inter alia by the single horn in the middle of the 
front of its head, the nari’ower and deeper excavation of its 
prothorax, and the much longer prothoracic horns which are'pointed 
at the apex ; the female differs in its clypeus less perpendicular, 
in the row of 6 tubercles (of which the point of the ocular canthus 
forms the external one on either side) being placed much more 
nearly in a transverse line, and in the declivous front part of the 
prothorax being more perpendicular and more sharply defined. 
Mulwala, N.S. Wales ; taken by Mr. Sloane. 
M.ECHIDIUS. 
M. SINUATICEPS, sp.nov. 
Nigro-piceus ; minus nitidus ; minus convexus : sat parallelus ; 
capite antice leviter bisinuato, lateribus obliquis fortiter bisinuatis ; 
prothorace foi’titer transverse crebre rngulose punctulato, trans- 
versim rugate, lateribus crenulatis sat fortiter arcuatis angulis 
omnibus acutis ; elytris punctulato-striatis, interstitiis alternis 
leviter convexis ; unguibus simplicibus. 
[Long. 5-| (vix), lat. 2|^ lines. 
The peculiar shape of the head seems to distinguish this insect 
fi’om all others of the genus. The front margin is widely and 
very gently emarginate, but the emargination is distinctly (though 
gently) bisinuate. The sides of the clypeus are strongly bisinuate 
but in such fashion (their obliquity in front being comparatively 
slight) that the appearance of the clypeus bears a rough resemblance 
to that of a female Liparetrus of Mr. Macleay’s first section 
(e. g. L. plmnicopterus, Germ.). The prothorax is not quite twice 
as wide as it is long down the middle ; its sides are gently arched 
to behind the middle (where the segment is at its widest) and 
thence nearly straight (not at all .sinuate) to the base ; the front 
angles are decidedly, the hind very strongly, acute ; the front 
