232 ME. J. S. BALT ON THE COLOMBIAN 



Head trigonate ; antennge slender, filiform, second joint very 

 short, the third and fourth equal, each twice the length of the 

 second, the three lower joints, together with the eighth and ninth, 

 flavous. Thorax one balf broader than long; sides nearly straight 

 and parallel from the base to beyond the middle, thence converging 

 towards the apex ; above smooth and shining, impressed on either 

 side behind the middle with a large deep fovea. Elytra each with 

 about six elevated vittse *, the one next the suture smooth and 

 broader than the rest, their interspaces biseriate-punctate ; pitchy 

 black or piceous, the outer margin, together with a narrow vitta 

 placed on the broad inner costa and connected at base and apex 

 with the outer limb, pale flavous. 



The sculpturing of the elytra is very similar to that ofD.Kirsclii, 

 but the discoidal vittse are rather more strongly developed ; the 

 ground colour of the elytra in the present species is piceous, 

 nigro-piceous, or black, with the outer margin and a narrow raised 

 vitta near the suture pale flavous or yellowish white. In D. KirscM 

 tlie subsutural vitta is much broader, covering two to four of the 

 longitudinal costse, so that the coloration of the elytra may be 

 described as yellowish white with a sutural line, abbreviated near 

 the apex, and a broad discoidal vitta (abbreviated posteriorly) 

 nigro-piceous or piceous. 



42. DiABROTiCA SEPARATA. Subelongata, postice paullo ampliata, 

 nigra, nitida, capite thoraceque bifoveolatis, piceo-rufis aut sordide 

 fulvis, antennarum articulis intermediis fuscis aut nigris, octavo quo- 

 que albidis ; elytris seriato-punctatis, minus regulariter elevato-vittatis ; 

 nigris, margine extern o vittaque subelevata prope suturam, basi et 

 apice cum margine coeunti, flavo-albidis j pedibus flavis, piceo-tinctis. 

 Long. 2| lin. 



Hob. Eastern Colombia (Winhler) ; Magdalena Eiver ; also 

 the Amazons (Para and Santarem). 



Head scarcely longer than broad, triangular ; front impressed 

 with a deep fovea ; encarpse trigonate ; antennae filiform, second 

 joint short, the third more than twice its length, equal to the 

 fourth. Thorax more than half as broad again as long; sides 

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

 thence slightly converging to the apex ; smooth and shining, 

 deeply bifoveolate. Elytra narrowly oblong, convex, strongly 



* In some specimens there are traces of two additional costse near the 

 suture. 



