112 MR. M. JACOBY ON THE [Feb. 1, 



cJ. Elytra with an oblong fovea below the scutellum, the anterior 

 part of which is tuberculiform. 



2 . Elytra simple. 



Length 2 lines. 



Head impunctate ; palpi robust, the terminal joint thickened. 

 Antennae filiform, entirely flavous, the third joint slightly longer than 

 the following ones. Thorax transverse, the sides straight at the 

 base, slightly rounded before the middle, the anterior and the 

 posterior margins perfectly straight, as well as the transverse groove 

 at the middle of the disk, the latter impunctate. Scutellum flavous. 

 Elytra slightly widened posteriorly, the punctuation arranged in rows, 

 which are more distinct anteriorly and at the sides than towards 

 the apices ; the latter with a more or less distinct flavous margin or 

 spot, the rest of the surface black, shining. Underside and legs 

 flavous ; elytral epipleur<e continued below the middle. Apical 

 abdominal segment of the male trilobate, the intermediate lobe 

 sHghtly prolonged. 



Balangoda. 



This species will enter the present genus, established by myself, on 

 account of the prolonged elytral epipleurse and the punctate-striate 

 elytra. The male has the elytra deeply impressed below the 

 scutellum (as is the case in P. buquetti) ; the anterior portion of this 

 depression is raised in the shape of two tubercles. In P. buquetti 

 these latter are placed within the fovea. The general aspect of 

 P. bicolor is that of a species of Aulacophora. 



LUPERXJS NIGROMARGINATUS, Sp. UOV. 



Black ; thorax obsoletely impressed, impunctate ; elytra extremely 

 finely punctured, pale yellowish white, the margins narrowly black. 



Var. a. Femora pale testaceous. 



Var. b. Elytra black, the disk obsoletely paler. 



Length l|-2 lines. 



Head impunctate, transversely grooved between the eyes, the 

 frontal tubercles scarcely divided. Antennae black, nearly as long as 

 the body, the third joint more than twice as long as the second. 

 Thorax about one half broader than long, the sides straight, the 

 posterior margin slightly rounded and sinuate ; surface impunctate 

 or extremely finely punctured, with a depression at each side. 

 Scutellum black. Elytra slightly more distinctly punctured than the 

 thorax, nearly white, the sutural and lateral margins narrowly black. 

 Tibiae mucronate ; the first joint of the posterior tarsi longer than 

 the three following joints together. The anterior coxal cavities 

 open. 



L. nigromaryinatus seems subject to a good deal of variation in 

 regard to colour ; and it is probable that the form with pale elytra 

 margined with black is the normal one, as even in the black specimens 

 a faint paler disk of the elytra indicates the white portion of the type. 

 In one specimen the rare instance of part colouring occurs, the left 

 elytron being black, and the right one white with the black lateral 

 margin. 



