JUBININI 61 



Ventral surface of the head typical of the tribe. Mentum large, transverse, 

 concave. Cardo with the base notably produced, this produced portion is espe- 

 cially thick, forming a large, equilateral triangular piece on each side of the 

 mentum. Two oblique, very sharp, high carinae fuse medianly at a point op- 

 posite the posterior third of the eyes, forming a thin, low common carina, to 

 give a Y-shaped pattern. The neck and head ventrally are separated by a well- 

 formed semicircular sulcus, and at the point where the common median carina 

 approaches this sulcus, the carina sharply bifurcates to enclose the gular fovea. 

 On both sides of the common carina the head is subopaque, clothed with shaggy 

 setae, but the enclosed triangular field, between the forks of the Y, is glabrous, 

 shining and concave, with a darkened, minute, pore-like fovea near base of 

 mentum. 



Pronotum campanulate, similar to many species of Jubus in its contour, 

 but unique in the tribe by having no trace of a transverse basal sulcus. A strong 

 short, triangular, acutely-pointed tooth situated on each side at basal third. 

 Anterior to this tooth, each side is sinuate, then evenly arcuate to apex, to form 

 a transverse anterior portion which includes two-thirds of the pronotal length. 

 Posterior to this tooth, each side is immediately, semicircularly incised to form 

 a short, narrower basal portion, with subacute basal angles. A large, foveoid 

 depression on each side of the pronotum, mesiad of lateral tooth. Disc of pro- 

 notum covered largely by a conspicuous triangular glabrous area, which begins 

 near the anterior margin, and broadens regularly to include most of the basal 

 portion of the pronotum. The basal area of this triangular, glabrous region is 

 sparsely granulate. The sides of the disc, about this glabrous region, are punc- 

 tate and closed with long setae so that the shining area is very distinct. In the 

 middle of this triangular, glabrous field is a weakly elevated, fusiform area 

 which includes five large, raised punctures in the form of a V, with the median 

 basal puncture bearing a remarkably long, thick, spinoid seta. No trace of a 

 transverse sulcus. 



Scutellum visible, triangular. 



Elytra clothed with long pubescence, and evenly punctate; humeri sub- 

 dentate due to the strong transverse basal carina. Each elytron with an entire 

 sutural stria and a single basal fovea, the sutural, which lies at the origin of 

 the sutural stria, partially recessed by the transverse basal carina. No dorsal 

 stria, but a vague depressed area mesiad of each humerus. Elytral flank with a 

 strong, longitudinal carina which begins at the humerus, and a large, circular, 

 nude subhumeral fovea. 



Abdomen with very strong margins, long, evenly tapering to rounded apex. 

 Five visible tergites, with proportions indicated by previous measurements, 

 densely pubescent. Six visible sternites; first stemite short, obscure between 

 the coxae; second stemite longest, slightly longer than third; third slightly 

 longer than fourth; fourth slightly longer than fifth; fifth weakly incised to 

 hold sixth; sixth stemite very transverse, shorter than fifth, and deeply concave 

 in median apical half. All sternites more or less flattened medianly. Third, 

 fourth and fifth sternites foveate on each side of median flattened area: these 



