248 



ME. J. S. BALY ON NEW SPECIES 



This insect, iu external form, strongly resembles the smaller 

 species of Pseiidocolaspis. 



G-enus EaBKACnrs, Dej. Cat. (Pseudocolaspls, Chap., Pairm.). 



Prothoracis episterni antica margiue antico concavo aut recto, angulo 

 antero-interno non Ubero 5 characteribiis caeteris ut in Pseudocolaspide. 



Type Eubracliis cijlindrica. 



On recently arranging my species of Pseudocolaspis I found 

 that the insects were separable into two distinct generic groups : 

 in the one, of which P. ccerulea, Laporte, must be taken as the 

 type, and which, consequently, must retain Laporte' s name, the 

 anterior margin of the prothoracic episternum is more or less con- 

 vex, its antero-internal angle being free and not continuous with 

 the anterior margin of the presternum ; in the second form, on 

 which Dr. Chapuis has apparently drawn up his characters of 

 Pseudocolaspis, the anterior margin of the episternum is straight 

 or slightly concave, and its antero-internal angle is continuous 

 with the outer angle of the presternum. For this genus I propose 

 to retain the name Uuhrachis, used for these insects by Chevrolat 

 in the 3rd edition of Dejean's Catalogue. The following short 

 table will show at once the distinction between the two genera: — 



Apical margin of anterior episternum convex 

 or angulate, its antero-internal angle 

 free Pseudocolaspis. 



Apical margin of anterior episternum straight 

 or concave, the antero-internal angle 

 continuous with the presternum .... Eubrachis. 



EuBRACHis SPiNiPES, n. sp. Oblonga, valde convexa, nitida, subtus 

 nigro-senea, pedibus Isete raetallico-purpureis cyaneo tinctisj supra 

 obscure cupreo-purpurea cyaneo et viridi-aeneo tincta, pube grisea 

 subsquamiformi parcus vestita; antennis piceo-rufis, viridi-£eneo- 

 micantibus, articulis ultirais quinque nigris; thorace subgloboso, 

 rude rugoso, transversim elevato-strigoso ; elytris thoracis basi 

 multo latioribus, obovatis, convexis, infra basin late transversim 

 depressis, callo humerah valde elevato, compresso ; parce confuse 

 punctatis, ante medium rude rugosis, pone medium vittis costiformi- 

 bus interruptis, tuberculisque magnis in series longitudinales dis- 

 positis instructis; femoribus subtus spinis validis duabus arcuatis. 

 Long. 2^ lin. 



