Tibiae posticae compressae apice dilatatae angulo externo acuto.
Obs.

The structure of the tarsus in this genus, so near in affinity to Carpophagus and Sagra, has led me to investigate more minutely the tarsus in the tetramerous and trimerous insects of the French entomologists, and the result has been that the arrangement given in the third volume of M.
Cuvier's Regne Animal, is discovered to be as erroneous in point of description, as it is inconsistent with natural affinities.
74.

Prionus bidentatus.Don.Ins.of New Holland, table 6.
75.

Prionus fasciatus.Don.Ins.of New Holland, table 6.
76.

Prionus spinicollis (n.s.) P.piceus antennis filiformibus basi nigris articulo ultimo vix crassiore, capite fusco tomentoso, thorace nigro-fusco punctis scabroso, lateribus spinulosus, in medio postice carina laevi tuberculoque utrinque magno compressa scabro; scutello piceo nigro-marginato, elytris testaceis punctulatis substriatis apice unidentatis, pectoris lateribus rufo-tomentosis.
77.