250 ON THE AUSTRALIAN CLIVINIDES, 



Prosternum with pectoral part not protuberant, intercoxal 

 part wide anteriorly, non-sulcate on base; episterna over- 

 hanging along anterior half, smooth — a few faint trans- 

 verse striolse perceptible with a lens. 



Mesosteryiitin smooth, without a lateral impression on each side 

 of peduncle to receive intermediate tibiie. 



Metastermhrn, large, long, transversely striolate on each side; 

 episterna very long and narrow. 



Legs : Anterior tibiae wide, 3-dentate, apical j^i'ojection short, 

 strong, external teeth short, wide at base, the edge of the 

 tibia triangularly excised above upper tooth so as to form 

 a fourth small non-projecting tooth, inner spines long; 

 intermediate tibise with two short prominent triangular 

 external teeth, the anterior at the apex, the upper a little 

 distance above the a^jex. 

 Peduncle wide. 

 Body winged. 



This genus is thoroughly distinct from Cllvina. Evident 

 differences that may be noted are : its very elongate form, wide 

 peduncle without lateral cavities, the raised and declivous collar 

 along anterior margin of prothorax and the bidentate intermediate 

 tibise. The formation of both the upper and lower surfaces of the 

 head is also very different. There are two supra-orbital punctures, 

 and two pro thoracic marginal punctures as in Clivina. 



Clivinarchus perlongus, n.sp. 



Very elongate, narrow, cylindrical. Head, prothorax and 

 under surface piceous black; elytra reddish brown; anterior legs 

 and antennte reddish piceous; palpi and four posterior legs piceous 

 red. 



Head (with eyes) broader than long (2-3 x 2-6 mm.); clypeal 

 suture, facial sulci and facial carinse lost in rugulosity of anterior 

 part of head; this rugose part raised and sharply defined posteri- 

 orly between base of eyes; frontal impressions wide, shallow, 



