319 



or less marked witli flavous, the sccond and third Joint vorv 

 small, equal, the fouith and following Joints nearly equal, mtlier 

 clongate and stout; thorax niore than twice as broad as long, 

 tlie sides and the posterior margin strongly rounded, tlie first 

 named with a rather broad reiiexed niargin, the postei'ior angles 

 rounded, the diso with a lew line punctures at the sides, ilavous, 

 the middle with two subtriangular rather large black spots, 

 another small round spot is placed at the middle of the base 

 and one at each side near the margins, eeutellum black, elytra 

 wider at the base than the thorax, closely semirugose-puuetate, 

 their epipleurae broad and conliniied to the apex; below and 

 the legs black, all the tibiae mucronate, the first Joint of the 

 posterior tarsi as long as the following two joints together, elaws 

 appendiculate, the prosternum narrow but distinet, the anterior 

 eoxal cavities open. 



Hab. Kabambare, Congo (Belgian Mus. and my eollection). 



Porphytoma gen. n. 



Body elongate, glabrous above, antennae robust, the ter- 

 minal joints thickened, thorax transversely subquadrate, aboiit 

 one half broader than long, metallie, the sides nearly straight, 

 uarrowed anteriorly, the angles distinet, the posterior ones oblicpie, 

 the (lisc foveolate at the sides, elytra subeylindrieal, tinely rugose- 

 ])unetate, their e})ipleurae broad at the base, indistinct below 

 the )niddle, tibiae with dorsal ridge, unarmed, claws biiid, pro- 

 sternum indistinct, anterior coxal cavaties open. 



Type. Pachytoma dines Karseh (submetallica Jac). 



I i)ropose this genus for the reception of the above named 

 species whieh cannot vemain in Pachytoma nor placed in any 

 of the allied genera on aecount of the entirely difFerently shaped 

 thorax and the metallie coloration of the latter. In no other 

 allied genus are the posterior angles semilarh' i)rominent nor 

 equally obliquely shaped and no species has this metallie colour 

 which partly extends to the elytra although to a less degvee. 



stell, entomol. Zeit. 1903. 



