284 Mr. J. S. Baly on the Phytophaga. 



duplo longiore, quarto adhuc paullo longiore ; mamUhulis apice bifidis ; 

 viento transverso, apice concavo ; oculis siibprominulis, subreuifomiibus. 

 Thorax trausversus, marginatus. Scutcllum transrersmu, siibpenta- 

 gonum. Elytra parallela, apice rotundata, dorso ssepe tuberculata. 

 Pedes modice robusti, simplices, ti»giiiculis appendiculatis. Proster7mtn 

 latitudine longior ; lateribus concavis, medio non aut vix dentatis ; aiite- 

 pectoris processu antero-laterali subtrigonato, lateribus concavis, apice 

 late truncato aut obtuso, angulo exteriore ad angulum anticum thoracis 

 extenso. Mesosternum transversum, apice obsolete angulato. 

 Type, Geloptera tuberculata, Baly. 



The form of the antero-lateral plate of the antepectus, together 

 with that of the mentum, separate this and the preceding genus 

 from Colasjpis. 



Geloptera tuberculata. 



G. oblonga, convexa, cuprea, subnitida ; labro fulvo ; tborace transverso, 

 lateribus rotundatis, dorso rugose punctate, medio longitudinaliter 

 canaliculato, lateribus irregulariter excavatis, obsolete tuberculatis ; 

 el}i;ris crebre rugoso-punctatis, subremote nitido-tuberculatis, tuberculis 

 ante medium minus elevatis, bic iUic rete male definita inter se con- 

 nexis, iis apicem versus magis elevatis, distinctis. — Long. 5 lin. 



Hab. Swan River, Australia. 



Oblong, convex, cupreous, subnitidous. Head closely punctured, 

 forehead impressed with an oblong fovea ; antennae filiform, four or 

 five basal joints (witli the exception of the first) more or less rufo- 

 fulvous. Thorax more than one-half broader than long, sides rounded, 

 sinuate at the base, narrowed in front, all the angles prominent ; upper 

 surface rugose-punctate, longitudinally grooved down the middle, sides 

 obsoletely tuberculate and impressed with a large shallow irregular 

 fovea. Elytra rather broader than the thorax, sides parallel, apex 

 rounded ; surface rugose-punctate, somewhat remotely covered with 

 flattened, slightly elevated, shining irregular tubercles, those on the 

 anterior two-thirds of the sm-face connected here and there by an 

 ill-defined raised network, those towards the apex of the elytra distinct 

 and more elevated than the rest. 



Geloptera geniculata. 



G. oblonga, convexa, seneo-cuprea, nitida, antennarum basi pedibusque 

 (horum coxis genubus tarsisque exceptis) rufis; thorace transverso, 

 lateribus rotimdatis, vix pone medium obsolete angulatis, angulis 

 posticis prominulis ; dorso convexo, fortiter subcrebre punctate, late- 

 ribus subrugoso-punctatis ; elytris profunde subcrebre punctatis, inter- 

 spatiis transversim elevato-strigosis, apicem versus tuberculatis, strigis 

 tuberculisque chalybeis. — Long. 3 lin. 



Hab. Swan River, Australia. 



Oblong, convex, shining seneo-cupreous ; the base of the antennae, 



