PERIBLEl'TUS. 



157 



medially. The tibia arc distinctly deflected at their immediate base, 

 cylindrical, and hardly dilated at the apex. Of the tarsi the first joint 

 is broad and elongate, triangular ; the second more minute ; the 

 third broader than the first, bilobed ; the terminal joint is elongated, 

 the claw being armed at its inner surface on either side near the 

 base with a sharp tooth. The posterior femora are broadly incras- 

 sated. The tibice are short, robust, not incurved medially, and atte- 

 nuated ; the posterior surface is flattened, and hollowed out or mar- 

 ginate : this marginatum at the apex forms a socket for the insertion 

 of the tarsus ; the margins of the socket are simple ; the extreme 

 apex is armed (behind the insertion of the tarsus) with a single 

 robust spur. The tarsus is short and attenuated, the two basal 

 joints being slightly dilated at their apex ; the third joint subcir- 

 cular ; the fourth terminating in a globular inflation. 



This genus, though closely allied to Loxoprosopus, is certainly very 

 distinct. The angulated or subsinuate lateral margin of the thorax, 

 the broad and very apparent transverse depression on the elytra, and 

 its generally robust form will at once characterize it. It is an in- 

 teresting link between Loxoprosopus and the following genus, Octo- 

 gonotes : to the former it is allied by its elongate antennae and its 

 abruptly vertical head ; to the latter genus by the angular form of 

 the lateral margins of the thorax. 



1. Peribleptus laevigatas. (Tab. VI. fig. 3.) 



P. ovatus, robust us, paralMus ; capite brevi, reflexo, supra basin 

 antennarum bituberculato, punetato, antea nigro, supeme flavo ; 

 thorace transversa, ad basin subattenuato, transverse depresso, 

 punetato, flavo, antice et ad medium longitudinaliter suffuso 

 fuseo ; elytris punctato-striatis (adsuturam striis obsoleiis), trans- 

 verse apud medium depressis, nigro-fuscis, ad humeros longitu- 

 dinaliter flavo-notatis ; antennis longis, tenuibus, filiformibus, 

 flavis, art. 7 et 8 fuscis, 9-11 pallide testaceis ; pedibus pallide 

 testaceis. 



Long. corp. 2 lin., lat. 1 lin. 



Ovate, robust ; sides parallel. Head short, transverse, depressed, 

 and (below the insertion of the antennae) reflected ; eyes tolerably 

 large, distant, situated nearly at the base of the head, and extending 

 laterally as far as the line of the margin of the thorax ; above the in- 

 sertion of the antennas are two slightly transverse and approximate 

 tubercles ; the surface is punctate ; the colour in front black, at the 

 base flavous. Thorax transverse (almost quadrate), slightly narrowed 

 towards the base ; the anterior angles are prominent ; the sides are 



