506 NOTES ON AUSTRALIAN COLEOPTERA, 



crebre nee rugulose punctulatis; illo subplanato medio triangu- 



lariter vix impresso ; hoc quam latiori vix longiori, postice 



quam antice plus quam dimidio latiori, obsolete canaliculate-, 



ad angulos anticos late impresso, lateribus integris antice sat 



rotundatis pone medium sinuatis, angulis posticis acutis 



retrorsum productis intra marginem carinatis ; elytris quam 



prothorax nullo modo latioribus vix duplo longioribus, sat 



grosse seriatim punctulatis, interstitiis alternis angustis sat 



distincte elevatis, angulis humeralibus minute dentif ormibus ; 



tarsorum anticorum sulcis sat magnis male definitis, interme- 



diorum vix distinctis. [Long. 2 J, lat. 1 line. 



The general nonparallel outline of this small species is much 



like that of L. divaricatus, Cand., the prothorax being rounded 



and markedly wider at or in front of the middle than at the base, 



and the elytra being narrow at the base and dilating hindward. 



In the tabulation of Lacon (referred to above), this insect would 



fall among the last six species ; if the dentiform humeral angles 



can be relied on as constant, this character distinguishes it from 



them all ; if not it would fall beside L. carinulatus, from which 



it differs by its pale antennae and legs, the alternate interstices of 



its elytra by no means strongly carinate, the larger tarsal sulci of 



the prosternum, as well as smaller size. In this species one of 



the elevated interstices (the 5th interstice, including that next 



the suture) is decidedly more elevated than any of those nearer 



the suture. 



S. Australia ; near Adelaide. 



Lacon duplex, sp.nov. 



Minus latus ; sat nitidus ; sat convexus ; setis minutis testaceis 

 sat sparsim (in elytris seriebus obscure geminatis) vestitus ; 

 piceo-niger, prosterno antice tibiis tarsisque dilutioribus, 

 exempli cujusdam elytris antice testaceis ; capite prothora- 

 ceque fere ut L. Adelaide sed hoc ad angulos anticos minus 

 distincte impresso, angulis posticis subrectis vix retrorsum 

 productis intra marginem vix carinatis ; elytris quam pro- 

 thorax vix latioribus duplo longioribus, sat fortiter sat crebre 



