JUBININI 55 



to apex, apex armed with a relatively long, very aciculate palpal cone. The 

 palpi are unusual in that the first three segments, although differing in shape, 

 are more or less equal in length. 



Ventral surface of head typical for genus. Mentum conspicuously concave. 

 Cardo produced from base and partially obscuring mouth-parts. Tempora with 

 their length equal to the longitudinal diameter of the eye from a ventral view. 

 Eyes prominently extended medianly from a ventral view, to narrow the genal- 

 gular field near the mentum. V-shaped pattern clear on lower face of head, the 

 converging carinae fusing to form the apex of a long triangle or V, the fusion 

 taking place at a line drawn through the posterior margins of the eyes ; basal 

 to this fusion, the carinae enclose a small, elongate gular fovea, and continue 

 to the neck. Enclosed surface of the V regularly arcuate in its longitudinal 

 diameter, from a point distinctly anterior to the fusion of the carinae, to a low 

 point just back of the wide mentum. Sides of head subcarinate anterior to the 

 eye and evenly rounded posterior to the eye. 



Pronotum in two lobes, an anterior subrhomboidal and a posterior trans- 

 versely oblong lobe. These lobes separated by a clearly defined, arcuate, trans- 

 verse sulcus. Anterior lobe nearly four times as long as basal lobe, with the sides 

 evenly arcuate to the semicirculately produced apical margin, and obliquely 

 narrowed from this widest level, to the transverse sulcus. No sign of a tooth or 

 spine on the pronotal margins, in both triangle and slide-mounts. Basal or 

 posterior lobe nearly one-half narrower than anterior lobe, sides evenly and 

 slightly arcuate, from transverse sulcus to relatively straight basal margin. 



Scutellum very minute, acute-triangular. 



Elytra radically different from many species of genus: each elytron with 

 only two basal foveae. These foveae are relatively large, nude, and lie just pos- 

 terior to the biarcuate transverse basal carina. Sutural stria entire. No dorsal 

 stria. Humeri sub-dentate, this condition being due to the structure of the elytral 

 flank: each elytral flank has a longitudinal carina which is sharply bent, nearly 

 at a right angle, near the humerus, so that the humerus appears in relief from 

 rest of flank. Beneath this apical flexure of the carina is a large subhumeral 

 fovea. 



Abdomen with five visible tergites: first tergite very large, as long as the 

 second and third tergites united; second tergite slightly longer than third; third 

 one-fourth shorter than the fourth, so that both the second and fourth tergites 

 are longer than the third; fifth is small, triangular and inconspicuous. Six stem- 

 ites visible, first sternite broadly triangular between the coxae; second stemite 

 very large, one-half longer than the first and medianly very gibbous or tumid, 

 with a transverse fossa at its base. In slide-mounts, under high magnification, 

 this transverse fossa is seen to have considerable depth, and to have carinate 

 edges. Third sternite simply convex, one-third as long as second ; fourth sternite 

 as long as third; fifth very short medianly, one-half as long as fourth, medianly 

 incised to hold the large, transversely ovate sixth stemite; sixth three times as 

 long as fifth, concave in median basal half, medianly slightly produced at pos- 

 terior margin. 



