of new Coleoptera from Australia. 195 
clypeus not very deeply triangularly notched in the 
middle. Thorax gently convex, not very thickly punc- 
tured, twice as broad as long, scarcely narrowed behind 
the middle; the base strongly sinuated at each side; the 
posterior angles acute, not directed outwards. The elytra 
are striate-punctate, the alternate interstices very narrow, 
and, owing to a transverse tubercle at the base of each 
puncture, the interstices are irregular (in fact, only visible 
when seen from behind, or not directly from above). 
There is no long hair on the thorax and elytra as in the 
preceding species. 
Hab.—South Australia. B. M. 
Mechidius rufus, Hope. 
Hab.— Australia. Mus. Oxon. 
Mechidius ater, sp. nov. 
Oblongus, ater, convexus. Capite antice leviter 
emarginato, lateribus reflexis vix sinuatis, genis promi- 
nulis obtusis. Thorace longitudine 2 latiori, conyexo, 
Jv 
creberrime fortiter punctato, antice arcuatim angustato, 
lateribus postice rectis, angulis posticis acutis, basi 
utrinque leviter sinuato. LElytris thoracis latitudine et 
2+ longioribus, parallelis, leviter convexis, striato-punc- 
tatis, striis esequidistantibus ; punctis oblongis, singulis 
basi tuberculo rotundato nitido instructis. Antennarum 
clava magna ovata. 
Long. 33—4} lin.; lat. 14—23 lin. 
Deep black, convex, sub-opaque. The thorax is only 
slightly emarginate in front; the sides are arcuate in 
front, nearly parallel behind; the base is gently emargi- 
nate on each side, which makes the posterior angles acute. 
Jilytra the same width as the thorax, parallel at the sides; 
each puncture of the striz has a distinct shining tubercle 
at the base. 
Hab.—Sydney. B. M. 
Mechidius brevis, sp. nov. 
Preecedenti affinis, at paululo latior. horace crebre 
fortius punctato, angulis posticis denticulo instructis, basi 
leviter rotundato utrinque leviter sinuato. LElytris basi 
fere truncatis, latitudine 4 longioribus, postice paulo am- 
