SPECIES OP THE GENUS DTABROTICA. 221 



Head triangular, not longer than broad ; vertex impressed on 

 either side with very fine transverse strigse ; front just above 

 the encarpae with, a deep fovea ; encarpse well defined, trigonate, 

 contiguous ; lower portion of clypeus with a transverse ridge, 

 from the upper edge of which an ill-defined, "narrowly wedge- 

 shaped carina extends upwards to the encarpse ; labrum large ; 

 antennae nearly equal to the body in length, filiform, the second 

 and third joints short, nearly equal, the fourth longer than the 

 preceding two united. Thorax about one fifth broader than long ; 

 sides parallel and distinctly sinuate from the base to beyond the 

 middle, slightly dilated and rounded anteriorly, converging near 

 the apex ; disk smooth and shining, nearly impunctate. Elytra 

 oval, dilated posteriorly, convex, rather closely and distinctly 

 jjunctured, the interspaces granulose. 



This species must stand close to D. 10-pimctata, Latr. It is 

 rather smaller, the third joint of the antenna is shorter, and the 

 elytra are immaculate. 



19. DiABROTiCA SUBSTJLCATA, Bal^, Trans. Ent. Soc. 3 ser. ii. 

 1865, p. 351. 



Sab. Colombia, Bogota. 



20. DiABROTiCA BiPUSTULATA. Oblongo-ovata, postice paullo am- 

 pliata, convexa; prasina, nitiJa ; ore, antennis, abdomine, tibiis et tar- 

 sis anticis quatuor, pedibusque posticistotis, sordide fulvis; thorace 

 bifoveolato ; elytris crebre punctatis, leviter sulcato-vittatis ; utrisque 

 pustula transversa, vix pone medium oblique posita, apiceque extreme 

 fulvis. Long. 3 lin. 



Hab. Venezuela : my collection. 



Head subrotundate ; vertex impressed with a deep longitudinal 

 fovea ; second and third joints of antennae very short, equal, 

 basal joint pale green. Thorax distinctly broader than long ; sides 

 parallel and slightly sinuate from the base to beyond the middle, 

 thence obliquely converging towards the apex; disk smooth, im- 

 pressed just behind the middle with a shallow semilunate excava- 

 tion, deeper at either end, and there forming a distinct fovea. 

 Elytra oblong, slightly dilated posteriorly ; convex, each elytron 

 with five or six faintly impressed longitudinal sulcations. 



21. DiABROTiCA Lebasit. Angustc ovata, postice ampbata, convexa, 

 pallide piceo-fulva; scutello, oculis antennarumque articulis septimo 



