856 AUSTRALIAN COLEOPTERA, WITH DESCRIPTIONS OF NEW SPECIES 



Antennte lO-articulatse, clava 3-articulata, .sat parva. 



Labrum breve transversuni. 



Clypeus ad perpenJiculum directus. 



Oculi magni. 



Prothorax (I unius sexus solum) antice vix impressus. 



Scutellum sat niagmim transversum. 



Tibia; aaticte (1 unius sexus solum) extenie fortiter 3-dentatge 

 intus apice sinnas singulas ferentes ; posteriores 4 unicavinatfe, 

 apice spinas binas latas ferentes. 



Tarsi antici perlongi, posteriores 4 breves, po.sticorum articulo 

 primo valde dilatato. 



Processus prosternalis post coxas erectus spiniformis. 



Stridulationis organa nulla (1). 



This is one of the most extraordinary insects I have ever seen. 

 Its general appearance is that of a female Pimelopus, but some of 

 its characters are quite anomalous, especially that of its exposed 

 labial palpi, which are inserted on either side the vertical lamina of 

 the mentum, and bear (as their apical joint) a large round ball 

 flattened on one side. The clypens is bidentate in front, very 

 strongly angulated at the sides and thence narrowed to the base, 

 which is roundly emarginate ; it is almost perfectly vertical, its 

 plane being at right angles to the surface of the hinder part of the 

 head, and its base rising considerably above the surface, so that 

 viewed from the side the head seems to rise into a bilobed keel, 

 and to be abruptly truncate in front, — while viewed from in front 

 the clypeus looks like an erect shield. The mentum no doubt 

 resembles that of Nephrodopus. The basal joint of the antennae is 

 not much shorter than the following six together ; the 2nd is con- 

 sideraljly longer than any of the next five, which are all short ; the 

 club is about as long as the 2nd joint of the anterior tarsi. The 

 inner apical spine of the front tiVjiae is a little longer than the 

 basal joint of the tarsus. On the posterior 4 tibise there are traces 

 of a transverse keel near the base in addition to the well-defined 

 one below the m'ddle. The front tarsi are very much longer than. 



