346 MR. M. JACOBT ON THE [Mar. 7, 



Head broad, sparingly and finely punctured at the vertex, the 

 frontal tubercles and the carina broad and short ; antennse extending 

 to the middle of the elytra, black, the basal joint thickened, the 

 second and third very short, equal, the following joints subquad- 

 rately widened, apical joint pointed ; thorax nearly twice as broad 

 as long, the sides rounded, the anterior angles thickened, the pos- 

 terior onesobsoletely rounded, the posterior margin distinctly so, the 

 surface not very closely but rather strongly punctured ; scutellum 

 broader than long ; elytra very closely and evenly punctured, the 

 punctures of the same size as those of the thorax, the interstices 

 shghtly M'rinkled ; underside and legs black. 



Hah. Natal, obtained by sweeping {G. Marshall). 



Decaria abdominalis, sp. n. 



Black, shining, abdomen flavous, the antennse ten-jointed ; 

 thorax impunctate, elytra extremely finely punctured. 



Var. Underside entirely black. 



Length 4 millim. 



Subelongate, black, very shining, the head impunctate, the 

 frontal tubercles obsolete, transverse, clypeus with a strongly 

 raised central ridge; antennse short, ten-jointed, black, the fourth 

 and the following joints transversely widened, not longer than 

 broad, the terminal joint more elongate, second one very short ; 

 thorax transversely subquadrate, about one-half broader than 

 long, the sides defiexed, the lateral margins nearly straight, the 

 angles obtuse, the surface impunctate or with a few minute 

 punctures ; scutellum small ; elytra much wider at the base than 

 the thorax, parallel, subcylindrical, extremely minutely and not 

 very closely punctured, black and shining, their epipleurae continued 

 below the middle ; all the tibiae mucronate, the posterior femora 

 much thickened, the first tarsal joint as long as the following two 

 joints together, claws appendiculate ; abdomen flavous ; prosternum 

 very narrow ; the anterior coxal cavities open. 



Hah. Estcourt, Natal, on acacia-trees {G. Marshall). 



I must refer this insect to Weise's genus Decaria, the only one, 

 with the exception of Psi/lliodes, in which the antennse have ten 

 joints only. Weise speaks only of the posterior tibise having a 

 spine, in the species before me all the tibiae are mucronate : the 

 author has neither mentioned the length of the posterior meta- 

 tarsus nor the shape of the prosternum, but the other characters 

 agree with his description ; in three specimens the abdomen is 

 flavous, in a single one the entire underside is black, but no other 

 differences can be seen. 



Malvernia, gen. n. 



Oblong; the antennse filiform, long, the 8th, 9th, and 10th 

 joints moniliform, the terminal joint elongate, strongly thickened, 

 with an additional appendage at the apex ; thorax transverse, 

 without sulcus ; elytra irregularly punctured, epipleurse broad at 

 the base, indistinct below the middle; legs rather robust, the 



