30 PHYSONYCHIS. 



the basal joint very long and broadly developed, the breadth being 

 half its length, and nearly three times the length of the second joint ; 

 flattened, not cylindrical ; the sides parallel ; and the apex, not 

 attenuated, but broadly and transversely subsinuate ; at the angle of 

 the apex is the insertion of the second joint, which is short and 

 ovate ; the third joint to the sixth are elongate, subdilated towards 

 the apex (the fourth, fifth and sixth being each distinctly longer and 

 more robust than the third) ; the seventh is incurved and obliquely 

 truncate at the apex, thus causing the insertion of the eighth to be 

 not in the same line as that of the others ; the eighth is broader and 

 much shorter than the seventh, its breadth being almost equal to its 

 length, sinuate in form, dilated at the inner side of the base, and 

 broadly truncate at the apex ; the ninth and tenth are of equal 

 breadth with, but shorter than, the eighth ; and the eleventh is 

 greater in length than the ninth and tenth together, somewhat 

 narrower, curved outwards at the base, and slightly attenuated 

 towards the apex. In the females the antennae are filiform, robust 

 and simple, — the first joint being, however, considerably flattened and 

 dilated, although not so much as in the males, and the fourth joint 

 longer and more robust than the others. 



Eyes large, subglobose, situated nearly at the base of the head, and 

 distant. 



Head short, transverse, very slightly produced in front, and in- 

 clined at right angles to the plane of the elytra. 



Thorax much broader than the head, transverse, in front di- 

 stinctly emarginate ; the sides broadly marginate, and converging 

 towards the front ; the line of the base is somewhat rounded — that 

 is, parallel to the line of the anterior margin. 



Scutellum large, triangular, — the apex being subcircular, im- 

 punctate, and glabrous. 



Elytra broader than the thorax, parallel, subdepressed, rounded at 

 the apex, at the sides marginate, covered throughout with minute 

 and very thickly disposed punctures ; along the surface are two 

 obscurely defined longitudinal ridges, in some specimens almost ob- 

 solete. 



Legs robust, impunctate. The anterior femora are tolerably robust, 

 hardly dilated, cylindrical. The tibiae shorter than the femora, di- 

 lated towards the apex, rounded at their inner margin, and flattened 

 or somewhat hollowed out at the outer margin, — armed in both sexes 

 around the socket that receives the apex of the tarsus with a row of 

 strong, upright, closely arranged teeth, resembling rigid hairs, or the 

 teeth of a comb. In the males the apex of the tibiae (Tab. I. fig. 8 c) 

 is very considerably dilated, and produced at its anterior margin into 



