AND SPECIES OP GALERUCINiE. 



167 



Antennae filiform, nearly equal to the body in length in the , 

 the third joint nearly twice as long as the second; pale flavous, 

 the two lower joints flavo-testaceous, the two upper ones black. 

 Thorax about one third broader than long ; sides obliquely di- 

 verging and obsoletely sinuate from the base to the middle, 

 thence rounded and converging to the apex, anterior angle pro- 

 duced into an obtuse tubercle, the hinder angle slightly produced, 

 acute ; disk convex, smooth, impunctate. Elytra convex, very 

 minutely punctured ; each elytron in the with a large ovate, 

 deeply excavated fovea, placed on the outer disk immediately below 

 the humeral callus and extending nearly to the middle, its entire 

 margin strongly thickened. 



I possess five specimens of the above insect collected by 

 Mr. Wallace in Celebes : the broader form, together with the 

 position of tlie elytral fovea, will at once separate it from the 

 allied species ; the elytral epipleurse are also less abruptly nar- 

 rowed below the middle than in the other similarly-coloured 

 specific forms. 



The five species described above are usually confounded in 

 collections under the name of hcemorrJwidalis or terminata : the 

 structural difi'erences, however, at once separate them. 



The following short Table will assist in distinguishing the 

 species described above : — 



1. Thorax impressed in the centre with a transverse fovea. 



foveicollis. 



2. Thorax not transversely sulcate. , 



a. Thorax only slightly broader than long . . Cumingii. 

 aa. Thorax distinctly broader than long. 



h. Thorax one half broader than long .... h(pmorrlioidaUs. 

 hb. Thorax one third broader than long. 



c. Elytra oblong-ovate terminata. 



cc. Elytra broadly ovate Wallacei. 



6. MoNOLEPTA VERTiCALis. Anguste ovata, postice paullo amphata, 

 convexa, nigro-picea, iiitida, capite, antennis basi, thorace pedibusque 

 anticis pallide flavis, pedibus posticis quatuor piceo- fulvis ; capitis 

 vertice fovea lotundata magna impresso ; thorace transverse, convexo, 

 laevi ; elytris tenuiter punctatis, utrisque maculis duabus, una infra 

 basin, altera prope apicem, flavis, ornatis. Long. 2 lin. 



14* 



