214 MB. J. S. BALT ON THE COLOMBIAN 



Head not longer than broad, triangular ; front impressed with 

 a deep fovea ; surface of clypeus slightly irregular, carina not 

 deiined ; antennae filiform, second and third joints short, the 

 latter slightly longer than the second, th.e fourth, as long as 

 the preceding two united. Thorax subquadrate ; sides parallel 

 from the base to beyond tlie middle, slightly converging at the 

 apex ; the anterior angles obtuse, the hinder ones acute ; disk 

 smooth and shining, impressed on either side with a shallow 

 fovea. Elytra narrowly oblong, increasing in width from tte 

 base towards the middle, closely punctured, faintly sulcate longi- 

 tudinally below the Humeral callus. 



In one specimen from the Magdalena Eiver the transverse 

 fascia, which varies greatly in extent in different individuals, is 

 reduced to a small round spot. 



3. DiABROTiCA CONSENTANEA. Subclongata, postice pauUo aiupliata, 

 nigra, nitida ; antennarum articulis nono et decimo albidis ; femoribus 

 basi, abdomine thoraceque flavis, hoc laevi, disco ante basin deplanato ; 

 elytris obsolete rugoso-punctatis, utrisque limbo laterali, ad apicem 

 abbreviato, fascia vix pone medium, iitrinque abbreviata, maculisque 

 tribus, duabus infra basin transversim positis, tertia ante apicem, 

 prasinis. Long. 3|-4 lin. 



Var. A. Elytris ante medium totis prasinis. 



Sab. Muzo, Coper. Var. A : my collection. 



Pront impressed with a deep fovea ; antennae filiform, the 

 second joint short, thie third slightly longer than the second, 

 the fourth equal in length to the preceding two ; the ninth and 

 tenth obscure white, stained at their apices with dart fuscous. 

 Thorax about one fourth broader than long ; sides nearly parallel 

 and slightly sinuate from the base to just beyond the middle (where 

 they are obtusely angled), thence obliquely converging to the 

 apex, the anterior angles slightly excurved, obtuse, the hinder 

 ones acute ; above smooth and shining, the middle disk at its 

 base flattened and faintly depressed. Elytra narrowly oblong, 

 very slightly dilated from the base towards the apex ; nitidous, 

 irregularly punctured, the interspaces granulose-punctate ; each 

 elytron with the narrow outer limb, abbreviated near the apex, two 

 spots some distance below the base (the first, rotundate, near the 

 suture, the second small, also rotundate, placed close to the lateral 

 limb, but slightly below the first one), an irregular medial trans- 

 verse band, abbreviated at the suture and the lateral margin, and, 



