roicus. 23 



Antennae situated at the front of the head, at some distance from 

 the inner margin of the eyes, approximate, robust, filiform, of nearly 

 the same length as the elytra ; the basal joint incurved outwards, 

 dilated and rounded, the breadth near the apex being half its length ; 

 the second joint short, subovate, its breadth being half the breadth 

 of the basal joint, and its length not greater than its breadth, 

 abruptly truncate, and not rounded at its apex ; the third longer 

 than the first, of the same breadth as the second, slightly dilated 

 at the apex and obliquely truncate ; the fourth joint to the eighth of 

 the same form, but slightly shorter than the third ; the ninth and 

 tenth less robust; and the terminal joint finely attenuate at its ex- 

 tremity. 



Eyes subglobose, situated at the sides of the head (at some distance 

 from each other), and at some distance from the basal line. 



Head depressed at right angles to the plane of the elytra ; when 

 viewed from above, transverse ; elongated in front ; the lateral mar- 

 gins being parallel, and the apex broad and transversely truncate, 

 not attenuated. 



Thorax broader than the head, quadrate (almost elongate), an- 

 teriorly very slightly emarginate ; the sides finely but evenly mar- 

 ginate, produced antemedially into a broad and distinct lateral an- 

 gular projection, thus giving to the thorax the form of an almost 

 equilateral hexagon. 



Scutellum large, triangular, impunctate. 



Elytra broader than the thorax, subparallel, robust, slightly at- 

 tenuated towards the apex, with no trace of a medial transverse 

 depression ; in sexmacvlatus very finely punctate, impubescent, gla- 

 brous. 



Legs robust and long, very finely pubescent (when seen under a 

 high power). The anterior femora robust, subdilated medially, im- 

 punctate. The tibia? robust, incurved distinctly but gradually through 

 their whole length, and subincrassated towards and at the apex. 

 The tarsi (Tab. I. fig. 5 d) short, and clothed with thick pubescence ; 

 the first joint is broad, dilated, and subcordiform ; the second of half 

 the breadth, short and ovate ; the third not larger than the second, 

 bilobed ; and the apical impubescent, slightly and gradually dilated 

 towards the apex, and incurved. The claw (Tab. I. fig. 5 e) is 

 bifid, simple, at right angles to the shank, and its two members 

 widely apart ; the base of each is thickened at the inner side, but 

 without any trace of an inner tooth, as in other neighbouring genera. 

 The posterior femora (Tab. I. fig. 5/) are broad and dilated ; when 

 viewed laterally, rounded at the upper margin, and at the lower 

 tolerably rectilinear in outline ; the apex is broadly and obliquely 



