96 ON THE SCYDMiENIDES OF N. S. WALES, 



Megaladerus inconspicqds. 



Piceus elytris castaueis ; thorace elytris angustiori ante medium 

 latissimo lateribus antice rotundatis postice contractis, ad 

 basin 4 impressionibus linea conjunctis notato. 



Long. ,:^. PI. VI. fig. 1, 2, 3. 



Paramatta, under wood in grass. 



This minute species difiers from M. thoracicus not merely in 

 the colour of the thorax, but in the shape and smaller size of that 

 organ, it being in the present species evidently narrower than the 

 elytra. The surface of thorax and elytra is covered with very 

 minute dots, and is microscopically setose. The antennae have 

 the first joint almost globose, 2 as long, but more narrow, 3 — 7 

 short, nearly equal, 8 rather shorter than 7, 9 — 11 the club 

 gradually increasing ; the fore tibias are setose and slightly 

 thickened at the extremity. 



Hetekognathus. Nov. Gen. 

 Mentum truncatum. 

 Pal/pi labiales 3-articulati articulo l'"" minimo, 2*^" longiori, 



3"° aciculari. 

 Palpi Maxillares 4-articulati, 1™'* minimo, 2^° elongato clavato, 



3"" longiori fusiforme, 4*° minuto globoso inter- 



dum laterali. 

 Mandibulce ad basin lentissime fimbriatae, dextrje dente unico 



bitido, sinistra? dentibus duabus. 

 Lahrum medio emarginatum. 

 Caput collo instructum. 



Antennce clavatse — articulo primo longitudinis ordinarii. 

 Pedes graciles femoribus clavatis. 

 Corpus setosum alatum. 



This genus, of which I have met with several species, difiers 

 materially from any which have been hitherto discovered. The 

 right mandible is armed with a strong bifid tooth, while the left 

 has two teeth, one on the upper, the other on the lower edge of 

 the mandible, and both at nearly the same distance from the 

 base. All the species which I have hitherto detected are found 



