( 37 ) 



IV. Descriptions of netc species of Pliytopharjous Beetles 

 belonging to the family Eumolpidfe ; ayid a Mono- 

 graph of the genus Eumolpus. By JoSEPH S. 

 Baly, F.L.S., &c. 



[Read 7th Febrnaiy, 1877.] 



Genus Colaspis, Fabr. 

 Colaspis Lefevrei. 



Elongata, convexa, purpureo-metallica, ssepe Eeneo-tincta, 

 subnitida, subtus nitida, supra sat crebre punctata; tho- 

 racis lateribus tridentatis; antennis extrorsum nigris, 

 pedibus metallico-viridibus. 



Var. B. Corpore toto viridi-metallico. 



Long. 5 — 6 lin. 



Hah. — Banks of the Amazon, collected by Mr. Bates. 



Vertex rather strongly but not closely punctured, front 

 impressed with a longitudinal groove ; clypeus subtrigo- 

 nate, more closely and finely punctured than the front ; 

 lower portion of face metallic green, with a brassy reflec- 

 tion, labrum and palpi pale frilvous; eyes oval, slightly 

 sinuate within ; antennae filiform, nearly equal to the 

 body in the $ , rather shorter in the $ ; basal joint 

 thickened, ovate, and, together with the fourth, metallic 

 green, second and third, together with the apex of the 

 first, obscure fulvous, stained with metallic green ; four 

 or five outer joints black ; all the joints fr-om the third to 

 the apical one nearly equal in length, compressed but not 

 dilated. Thorax nearly tmce as broad as long, sides 

 rounded, the apical angle acute, curved slightly outwards, 

 lateral margin tridenticulate. Scutellum metallic greeu, 

 semioblong-ovate, its apex acute, its disk smooth, im- 

 punctate. Elytra broader than the thorax, oblong ; sides 

 parallel, their apices subacutcly rounded; above convex, 

 scarcely excavated below the basilar space; surface covered, 

 as well as that of the thorax, with coarse round punctures ; 

 interspaces towards the apex irregularly thickened. Basal 

 joint of anterior tarsus dilated in the male, oblong-ovate. 



TRANS. ENT. SOC. 1877. — PART I. (aPR.) 



