Mr. J. S. Baly on new Species of Phytophagous Beetles. 25 



apex, running parallel to the suture, and terminating long be- 

 fore reaching the apex of the elytron, the other two commencing 

 about the middle of the outer disk, connected at their base by 

 an obliquely transverse line, the inner one extending nearly to the 

 sutural angle, the outer one short, black. Breast nigro-piceous. 



Australica (Stethomela) gibbosa. 



A. subquadrata, apice subangulata, dorso valde convexa, gibbosa, 

 nitido-cuprea ; thorace hie illic punctis maguis rotundatis viridi- 

 metallicis profunde impresso ; elytris postice declivibus, utrinque 

 apicem versus ad latus longitudinaliter excavatis, punctis mag- 

 nis rotundatis remotis viridi-metallicis in seriebus decern in- 

 sequidistanter positis profunde impressis ; antennis pallide flavis, 

 articulis intermediis fuscis. 



Long. 4^-5|- lin. 



Hab. Dawson's River, Richmond River. 



Subquadrate, subangulate at the apex of the elytra, very con- 

 vex, gibbous, shining cupreous. Head broad, fiat ; face divided 

 down the middle by a longitudinal groove, which extends nearly 

 to the anterior margin of the epistome ; the latter transverse, 

 short, separated from the face by a nearly horizontal grooved line ; 

 antennae rather more than half the length of the body, slender, 

 filiform, pale yellow ; intermediate joints fuscous. Thorax more 

 than twice as broad as long; apex concavely excavated ; sides 

 nearly straight and parallel behind, rounded and narrowed in 

 front; upper surface smooth, impressed here and there with 

 irregularly congregated, large, round, deep, obscure metallic- 

 green punctures. Elytra scarcely broader than the thorax at 

 their base, slightly narrowed behind, conjointly angled at their 

 apex, very convex, somewhat abruptly deflexed behind the mid- 

 dle ; each elytron on its outer side covered with a broad but 

 shallow depression, which extends from just before the com- 

 mencement of the posterior third of the elytron, and reaches to 

 immediately within the sutural border, leaving the apical por- 

 tion of the suture itself elevated, and forming with its fellow a 

 distinct ridge; on the surface of each elytron are ten rows of 

 remote impressions similar to those on the thorax; they are 

 rather larger and more deeply impressed, and are placed at un- 

 equal distances on each row ; on the extreme outer border is a 

 single row of smaller and more crowded punctures, concolorous 

 with the disk; interspaces subremotely covered with faintly- 

 impressed reticulations. 



Genus Plagiodera, Redt. 



Plagiodera Trimeni. 



P. ovato-rotundata, modice convexa, nitida, laete cupreo-senea ; an- 



