379 



piceous colour, antennse nine-jointed, black, the lower three joints 

 testaceoiis below, terminal joints strongly widened ; thorax three 

 times broader than long, the latéral margins straight, the anterior 

 angles thickened, the surface entirely impunctate, flavous, the sides 

 sometimes with a piceous spot; scutellum black; elytra oblong- 

 ovate, extremely minutely punctured, piceous, with a slight bluish 

 gloss, the sides with a narrow, pale testaceous margin, each elytron 

 with a sometimes Interrupted, slightly oblique narrow testaceous 

 stripe which extends from the middle of the base nearly to the 

 apex ; underside black, legs testaceous, the apex of the posterior 

 femora likewise black. 



Hah. Bornéo. 



This is a species of less broadly ovate shape, than is usually the 

 case ; the pattern of the elytra also difïers from any of its congeners, 

 the three spécimens contained in my collection only vary in the 

 width of the elytral pale stripe which is broader and uninterrupted 

 in one spécimen. 



PHYGASOMA n. gen. 



Body oblong-ovate, antennse and palpi filiform, thorax transver- 

 sely subquadrate, with a shallow transverse, deeply bisinuate 

 groove, not extending to the sides ; elytra semi punctate-striate in 

 the maie, irregularly punctured in the female, their epipleurse very 

 broad, horizontal, nearly continued to the apex, tibise not chanelled, 

 the four anterior ones unarmed, the others with a distinct spur 

 placed at the middle, posterior femora strongly incrassate, the first 

 joint of the posterior tarsi as long as the following two joints toge- 

 ther, claws appendiculate ; prosternum rather broad, mesosternum 

 very short, in shape of a narrow transverse raised ridge ((f ) ; ante- 

 rior coxal cavities open ; prosternum in the female more narrowed 

 between the coxse, longitudinally sulcate, the mesosternum not 

 raised. 



The genus proposed hère, bas affmities with many others, nota- 

 bly with Phygasia and the Mexican genus Syphrea Baly ; the 

 thoracic sulcus is however of rather peculiar shape, not always 

 equally well defined, shallow and deeply bisinuate, each end termi- 

 nating at some distance from the sides at the basai margin, but 

 another obsolète dépression forms a kind of continuation towards 

 the sides of the thorax, but this can only be seen in certain lights ; 

 another rare peculiarity of the genus is to be found in the diffé- 

 rences between the two sexes in regard to the structure of the 

 mesosternum and the elytral punctuation, and the maie may at 

 once be known by the perpendicular and raised shape of the former, 



