234 NEW SPECIES OF AUSTRALIAN COLEOPTERA, 



the angles rounded; margins narrowly reflexed. Scutellum small, 

 curvilinear ly 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 

 costse. 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 IJmm. 



9. Differs in being slightly broader, in having shorter and 

 simple antennae, lobes to penultimate joint of anterior tarsi not 

 widely divergent; the colour is the same, except the amount of 

 paleness of the four posterior tibiae. 



^^5._Syclney, 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 antennae testaceous beneath, piceous 

 above; mandibles dull red; palpi testaceous, apical joint piceous; 

 anterior legs with the apex of femora and the base of tibiae 

 obscure red. Head almost glabrous; prothorax sjDaringly 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; antennae 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 suboval, broader and nearly as long as 7th-8th 

 combined, emarginate at its outward apex, 10th slightly longer 



