486 Mr. M. Jacoby on 



Amongst the smaller species of the genus, B. amazonicus 

 is distinguished by the coloration of the antenna, the fine 

 and close punctuation of the thorax, and the remote 

 strise of the elytra ; the female does not differ except in 

 the more transversely shaped thorax. 



Rhdbdojiterus apiciiKS, sp. n. 



Dark peneous, the basal joints of the antenntc fulvous, thorax short, 

 strongly dentate at the sides, rather finely and closely punctured, 

 elytra with basal depression, rather finely and remotely punctate- 

 striate, legs fulvous, the apex of the tibia; and the tarsi piceous. 



Length 4 millim. 



Head remotely and finely punctured at the vertex, the latter 

 convex, epistome transverse, more strongly punctured, separated 

 from the face by a few strong punctures, labrum fulvous, antenna; 

 rather long, black, the lower four or five joints pale fulvous ; thorax 

 more than twice as broad as long, the sides strongly widened at the 

 middle, with a very distinct tooth, sinuate in front of the latter, 

 anterior angles dentiform, the surface rather finely and closely 

 punctured, the interstices with some very minute punctures, not 

 raised; elytra with a distinct depression below the base, scarcely 

 more strongly punctured than the thorax, except within the depression 

 and at the sides anteriorly, the iuterstices flat, scarcely raised even 

 at the apex ; legs fulvous, the femora with a slight ajneous gloss, the 

 apex of the tibiae and the tarsi more or less piceous. 



Hah. Peru. 



One of the smaller-sized species, to be separated from 

 most of its allies by the colour of the antennie, the com- 

 paratively finely punctured thorax and elytra, the absence 

 of the rugosities of the latter, the tooth at the sides of the 

 thorax and the colour of the legs. Two specimens before 

 me seem to represent the female sex only. 



Rhabdojitcrus abdominalis, sp. n. 



Below obscure piceous, the legs and abdomen fulvous, above 

 greenish-eeneous, thorax finely and closely punctured, subangulate 

 near the base, elytra elongate, hnely and semi-regularly pimctured 

 near the sutiire, more irregularly and strongly so at the sides, apical 

 joints of the antennoe piceous, tarsi bluish black. 



Length 4 millim. 



Mas. Head metallic greenish, minutely granulate and finely and 

 sparingly punctured, witli a longitudinal central grove, eyes large, 



