570 MR. M. JACOBY ON NEW [NoV. 1, 



obsoletely depressed transversely below the base, rather strongly 

 punctate-striate, the punctures much finer posteriorly, the disc 

 violaceous, the extreme apex fulvous ; underside and legs fulvous ; 

 femora unarmed ; clavFS bifid ; presternum dilated posteriorly. 



This small species is principally distinguished by the colour of the 

 antennae and that of the elytra ; the varieties do not show any 

 differences except in the colour of the upper surface ; the unarmed 

 femora do not agree with the definition of Rhembastus, but neither 

 this genus nor Ivongius are well defined by the author, who has said 

 nothing about the sulcus at the sides above the eyes, nor does 

 M. Lefevre mention this character in his diagnosis of the genus. On 

 the other hand, Ivongius, which agrees in the unarmed femora with 

 the present species, is described by von Harold as having the clypeus 

 separated from the face, which is not the case in the insect described 

 here. Ivongius antennarius, Har., agrees very nearly with it (to judge 

 from a three-line description), but is described with a smooth thorax. 

 B. pusillus, Har., seems to be another closely allied species, but 

 differs in the colour of the antennae and of the head and thorax. 



Rhembastus ANTENNATUS, n. sp. 



Reddish fulvous ; antennae flavous, the sixth, seventh, and apical two 

 joints as well as the tarsi black ; thorax sparingly punctured ; elytra 

 finely and distantly punctate-striate. 



Length Ig line. 



Head impunctate, the eyes surrounded with a distinct sulcus, the 

 vertex with a longitudinal groove, clypeus not separated from the 

 face ; jaws black ; antennae extending to half the length of the elytra, 

 flavous, the third and fourth joints equal, the sixth and seventh and 

 apical two joints black, the latter distinctly thickened ; thorax one 

 half broader than long, the sides straight, the surface sparingly and 

 finely punctured at the disc, the sides impunctate ; elytra convex, 

 without basal depression, finely punctate-striate, more distinctly 

 anteriorly than posteriorly, the shoulders with a deep depression 

 within ; femora dentate, tarsi black, claws bifid. 



Principally distinguished from other nearly similarly coloured 

 species by the colour of the antennae. 



EURYDEMUS METALLICUS, n. Sp. 



Obscure piceous, the antennae and legs fulvous ; above metallic 

 greenish or cupreous ; the head and thorax nearly impunctate, the 

 elytra deeply punctate-striate, the interstices more or less longitudin- 

 ally convex, femora dentate. 



Length l|-2 lines. 



Of rather elongate and parallel shape ; the head metallic greenish, 

 with a few punctures at the vertex ; the eyes large, rather closely 

 approached, their inner margin sinuate ; clypeus transverse, fulvous, 

 its surface rather depressed, its upper margin separated from the 

 face by a narrow transverse groove; antennas long and slender, 

 fulvous, the basal joint stained with piceous, the second joint half 



