70 PHYSIHEKUS. 



the fourth and fifth of equal length, somewhat shorter ' than, and of 

 similar form to, the third ; the sixth to the eleventh slightly more 

 robust, and shorter. 



Eyes distant, situated at the base of the head, tolerably globose, 

 extending laterally beyond the anterior angles of the thorax. 



Head short, depressed at oblique angles to the plane of the elytra, 

 very slightly produced in front ; for the most part tuberculated or 

 foveolated between the eyes. 



Thorax broader than the head ; quadrate or elongate, in hardly 

 any instances transverse ; the anterior angles are considerably de- 

 pressed and distinct (not rounded or obsolete, as in Rhinotmetus), and 

 the sides are more or less broadly marginate. 



Scutellum triangular. 



Elytra broader than the thorax, robust, and rounded at the apex, 

 generally punctate-striate, and clothed more or less with pubescence. 



Legs : the anterior femora subdilated towards the apex. The tibia} 

 shorter than the femora, incurved downwards at the immediate base, 

 slightly incrassated towards the apex, and broadly truncate. The 

 tarsus is considerably shorter ; the first joint is triangular, attenuated 

 at the base ; the second of the same form as the basal joint, but 

 smaller ; the third broader than the first, transverse, and subcircular 

 (very seldom bilobed): the under surface of these three joints is 

 clothed and the margins of them densely fringed by a thick rigid 

 pubescence : the terminal joint is elongate, attenuated at the apex, 

 and slightly incurved as well as incrassated towards the apex ; the 

 terminal claw is bifid, the inner margin of each tooth being armed 

 at its inner surface near the base with a short and blunt tooth-like 

 process. The posterior femora are thickly incrassated, subattenuated 

 towards the apex, and generally (when seen transversely) of a regular 

 ovate form. The posterior tibia is short, abruptly bent at the imme- 

 diate base, gradually subdilated towards the apex ; the surface (when 

 viewed from behind) is flattened, and on either side longitudinally 

 marginate : this margination near the apex is not developed into teeth- 

 like spurs, but is in most species simple ; occasionally, however, its 

 outline is subsinuate : the socket at the apex (which receives the inser- 

 tion of the tarsus) is armed at its margin by a series of minute teeth 

 arranged like the teeth of a comb, terminating ultimately in a single 

 abrupt claw. The posterior tarsus is short and attenuated ; the basal 

 joint is elongate, and dilated towards the apex, where it is broadly 

 truncate ; the second is narrower than, and of equal length to the first, 

 attenuated, and truncated at the apex ; the third joint is minute and 

 subcircular ; from the centre of the third proceeds the ultimate joint, 

 which is elongated, subcurved, and dilated at its extremity into a 



