198 MR. MARTIN JACOB Y ON NEW SPECIES [Mar. 4, 



as long, the sides straight, not narrowed anteriorly, with a very- 

 narrow margin, anterior angles feebly truncate, the surface 

 impunctate, fulvous, with an obsolete shallow sulcus near the 

 base, posterior angles scarcely oblique ; scutellum black ; elytra 

 very shining, black, slightly depressed below the base, not 

 perceptibly punctured, a round spot, placed at the middle of the 

 base, and a transverse, very regular band near the apex yellowish 

 white ; below and the legs black ; abdomen fulvous. 



Hah. Peru. 



A very distinct species on account of its coloration. 



Systena clarki, sp. n. 



Testaceous ; thorax transversely subquadrate, impunctate ; 

 elytra dark fuscous, the basal margin narrowly testaceous, the 

 surface impunctate. 



Length 3 millim. 



Head impunctate, testaceous or pale fulvous, the frontal 

 elevations distinct, subquadrate ; antennfe entirely flavous, the 

 third joint not longer than the foui-th, the terminal joints slightly 

 thickened ; thorax about one-half broader than long, the sides 

 rounded at the middle, distinctly constricted at the base, the 

 angles acute, the surface with a shallow but distinct basal sulcus, 

 impvmctate, obscure testaceous or fulvous ; scutellum flavous ; 

 elytra wider at the base than the thorax, entirely impunctate, 

 dark fuscous or nearly black, the base narrowly testaceous ; below 

 and the legs testaceous ; prosternum extremely narrow, the 

 posterior femora bvit moderately thickened, with a piceous short 

 streak above near the apex, the metatarsus of the posterior legs 

 elongate. 



nah. Colombia. 



There are three specimens of this species contained in my 

 collection ; the thorax is of rather convex shape, more so than is 

 generally the case in this genus, and the first joint of the posterior 

 tibise is proportionately long, but there is nothing to separate the 

 species generically. 



Systena punctatissima, sp. n. 



Below black, above pale testaceous, antennse fuscous ; the head 

 remotely, the thorax and the elytra very closely and finely 

 punctured. 



Length 4 millim. 



Head distinctly but not closely punctured, the frontal tubercles 

 feeble, the labrum piceous ; antennte rather stout, entirely pale 

 fulvous, the joints slightly stained with fuscous above, terminal 

 joints slightly stouter and shorter than the preceding ones ; 

 thorax one-half broader than long, the sides distinctly rounded 

 at the middle, the anterior angles rather obsolete, the surface 

 very closely punctured at the sides, less closely at the middle, 

 the basal sulcus very feeble; elytra with a slight transverse 



