484 Mr. M. Jacoby on 



the apical two joints piceous ; thorax strongly transverse, narrowed 

 anteriorly, the sides subangulate at the middle, obliquely narrowed 

 anteriorly, the angles slightly produced outwards, the disc remotely 

 and not very strongly punctured, the sides more closely punctate, the 

 interstices with some very fine punctures, scutellum impunctate ; 

 elytra scarcely perceptibly depressed below the base, rather more 

 strongly punctured than the thorax, the punctures arranged in closely 

 approached, fairly regular rows, the punctures scarcely stronger at 

 the sides, the interstices at the apex costate; intermediate tibiee 

 slightly curved ; the male organ is slender and strongly curved, the 

 apex is produced into a long point of lanceolate shape, the under 

 surface very slightly sulcate. 



Hah. Colombia. 



The principal character which distinguishes this species 

 from its allies is the remotely punctured thorax, the closely 

 arranged rows of punctures of the elytra, which have tlie 

 sides scarcely differently sculptured, in connection with the 

 colour of the antennae and the dark seneous general colour; 

 I cannot find any other species described to which these 

 detiils apply; several specimens are contained in my 

 collection, others I received for examination from M. 

 Ciavareau. 



The following species described here are all of small 

 size, and have lost much of the shape of the more robust 

 and typical forms, agreeing in that respect with B. crosulus, 

 Lef., of which I possess typical specimens ; the thorax in 

 these species is short, transverse, and the sides are obliquely 

 narrowed anteriorly and more or less angulate near the 

 base ; there is no reason to separate them generically 

 from Rhahdoptems, as intermediate stages occur ; which 

 again proves the difficulty of classification in the exotic 

 species of Eumolpidw. By drawing attention, however, to 

 this divergence of shape, the determination of the species 

 will be assisted. 



Bhdbdoptcrus (qncicornis, sp. n. 



Piceous with metallic cupreous gloss, the basal joints of the 

 antennffi and the legs fulvous, thorax finely and irregularly i^unctured, 

 suljangidate at the middle, elytra strongly and semi-regularly 

 punctured anteriorly, with basal depression, the interstices longi- 

 tudinally costate at the apex, tarsi piceous. 



Length 5 millim. 



