58 The Philippine Journal of Science i9i8 



more or less straight or sinuate, and the posterior metapleural 

 angle more or less rounded or angular even in the same species. 



CYMINJE 



Genus RHIOBIA novum 



Head subequilaterally triangular, clypeus longer than juga, 

 vertex somewhat less than three times broader than an eye, 

 ocelli over two times more distant from one another than from 

 eyes, antenniferous tubercles truncate at apex, unarmed, first 

 joint of antennae much shorter than any of the other joints, 

 second and third joints slender and linear, fourth a little longer 

 than third, bucculae low but percurrent, only their shortly 

 rounded anterior ends visible from the side, the remaining parts 

 of them, when viewed from the side, hidden by an oblong longi- 

 tudinal callosity placed between the bucculae and the eyes, 

 rostrum passing hind coxae, first joint extended beyond anterior 

 margin of prosternum. Pronotum three times broader across 

 the humeri than at apex; laterally slightly constricted before 

 the middle, divided into two lobes by a transverse impression, 

 the anterior lobe with rounded sides but with a depressed 

 (though transversely convex) parallel-sided apical collar, 

 posterior part of the lobe with a transverse callosity, which im- 

 mediately within the lateral margins is curved backward and 

 then inward, forming a hook, the posterior lobe two times as 

 long as the anterior one, with straight sides and rounded 

 humeral angles, the broadly rounded basal margin narrowly 

 depressed with the extreme margin a little elevated, pronotal 

 lateral margins bluntly carinate, the carina forming a continua- 

 tion of the narrowly elevated basal margin, suddenly discon- 

 tinued a little behind the apical angles, leaving the sides of the 

 collar vertically rounded, immarginate. Scutellum a little broad- 

 er than long, near the base with a transverse, obtuse-angled, 

 linear callosity emitting a ridge from its middle to the apex. 

 Elytra hyaline, their exterior margins parallel near the base, 

 then a little roundly ampliate, clavus with three rows of 

 punctures, the outermost row placed in an impressed line, the 

 commissure half the length of the scutellum, corium impunctate 

 excepting two rows of punctures, one near the claval suture 

 continued more or less distinctly along the apical margin, the 

 other at the outer margin of the radial vein, the latter row only 

 in its apical part visible from above, the remainder of it visible 

 only from the side, radial vein gradually strongly deviating from 

 costal margin, joining apical margin near or not far from its 



