234 NEW SPECIES OF AUSTRALIAN COLEOPTERA, 
the angles rounded; margins narrowly reflexed. Scutellum small, 
curvilinearly triangular. Elytra parallel-sided almost to extreme 
apex, shoulders feebly rounded; more than twice as long as head 
and prothorax combined; in certain lights with feeble traces of 
costa?. Penultimate segment of abdomen deeply and narrowly 
excised. Legs compressed, moderately long, anterior tibiae some- 
what bent, penultimate joint of tarsi deeply cleft, in the anterior 
the lobes widely diverging. Length 5 J, width ljmm. 
9- Differs in being slightly broader, in having shorter and 
simple antenna?, lobes to penultimate joint of anterior tarsi not 
widely divergent; the colour is the same, except the amount of 
paleness of the four posterior tibia?. 
Hah. — Sydney, Galston, Clifton, N.S.W. 
From the description of H. dilaticollis, the present species 
appears to differ in the colour of the legs, and in the dilatation of 
the prothorax. 
Heteromastix McDonaldi, n.sp. 
Oblong, shining, subdepressed. Black; prothorax clear 
testaceous, first two joints of antenna? testaceous beneath, piceous 
above; mandibles dull red; palpi testaceous, apical joint piceous; 
anterior legs with the apex of femora and the base of tibia? 
obscure red. Head almost glabrous; prothorax sparingly pubes- 
cent; elytra moderately densely clothed with short semi-upright 
ashen pubescence; on the undersurface the pubescence is darker 
than on the elytra and very short, except at apex of abdomen. 
Head strongly punctate, the punctures as deep but not quite as 
wide at the base as in the middle, almost obliterated at apex; 
undersurface and legs densely and minutely punctate. 
Head transverse, an irregular impression and a feeble carina 
between the eyes; eyes rather small, prominent; antenna? inserted 
equidistant from each other and from the middle of the eyes, 
reaching the middle of elytra, 1st joint not as long as 2nd-3rd 
combined, 2nd more than half the length of 3rd, 3rd-8th obconic, 
subequal, 9th subovai, broader and nearly as long as 7th-8th 
combined, emarginate at its outward apex, 10th slightly longer 
