342 MISCELLANEA ENTOMOLOGICA, 



This species resembles A. Madeayi, but may be readily dis- 

 tinguished from it " inter alia," by the gradually increasing width 

 of the antennae and their bisinuate joints. 



I have never seen but one specimen of this insect, and that 

 was taken many years near Lane Cove by that most excellent 

 collector the late Mr. Turner. 



Arthropterus angulicornis. 

 Long. 4| lin., lat. 1^ lin. 



Rufo-piceus subnitidus crasse punctatus, antennis latissimis 

 articulo primo transverso angulo externo subproducto, 

 thorace elongate dorso subdepresso lateribus subparallelis, 

 elytris postice leviter punctatis subtruncatis, tibiis posteriori- 

 bus extus obtuse terminatis. 

 Hab. Ipswich, Moreton Bay. 

 This also approaches A. Madeayi. It is however of a darker 

 colour and denser and coarser puncturation, has the exterior angle 

 of the first joint of the antennae produced, and has scarcely any 

 trace of the median line on the thorax. 



Arthropterus Riverine. 

 Long. 4| lin., lat. If lin. 



Piceo-rufus nitidus fulvo-hirtus, antennis latissimis articulo 

 primo transverso angulo externo subproducto, capite post 

 oculos rotundato, thorace oblongo lateribus antice subrotun- 

 datis dorso subdepresso canaliculato, elytris leviter rugoso- 

 punctatis apice singulatim rotundato-acuminatis, tibiis an- 

 ticis extus acute intermediis et posticis obtuse terminatis. 

 Hab. Lower Murrumbidgee. 

 The thorax in this species is of very different form to that of 

 A . Hopei and of the group generally. It is rather broad, not 

 narrowed in front, and nearly parallel-sided. It differs also from 

 Hopei in the nioi'e angular basal joint of the antennae, the flatter 

 and more deeply canaliculate thorax, and the more pointedly 

 rounded apex of each elytron. 



