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



duplo longiore, quarto adhue paullo longiore; mandibulis apice bifidis ; 

 mento trausverso, apice concavo ; oat/is subprominulis, subrenifonnibus. 

 Tlwrax transversus, marginatus. Scutettum transversum, subpenta- 

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

 Pedes modice robusti, simpliee.s, unguicuHs appendiculatis. Prosternum 

 latitudine longior ; lateribus conca\ is, medio mm aut vix dentatis : anie- 

 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, Gelqptera tuberculata, Baly. 



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



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



from Col asp is. 



GelopAera tuberculata. 



G. oblonga, convexa, cuprea, subnitida ; labro fidvo ; thorace trausverso, 

 lateribus rotundatis, dorso rugose punctato, medio longitudiualiter 

 canaliculate-, lateribus h-regulariter excavatis, obsolete tubercidatis ; 

 elj"tris crebre rugoso-puuetatis, subremote nitido-tubercidatis, tuberculis 

 ante medium minus elevatis, hie illic rete male definita inter se con- 

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



Hub. Swan River, Australia. 



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

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

 five basal joints (with tlie 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 surface 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) runs; thorace transverso, 

 lateribus rotundatis, vix pone medium obsolete angulatis, angulis 

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

 ribus subrugoso-punctalSs ; elytris profuude subcrebre punctatis, inter- 

 spatiis transversim elevato-strigosis, apicem versus tubercidatis, strigis 

 tuberculisque chalybeis. — Long. 3 lin. 



11(d). Swan River, Australia. 



Oblong, convex, shining a?neo-cupreous ; the base of the antenna'. 



