254 MR. J. S. BALT OT>f THE COLOMBIAN 



fourths the length of the body, robust, filiform, slightly thick- 

 ened towards the apex ; second joint short, subovate, third and 

 fourth equal, each nearly twice the length of the second. Thorax 

 nearly twice as broad as long ; sides straight and parallel, slightly 

 converging at the apex ; upper surface transversely convex, disk 

 with a shallow sublunate excavation, ill-defined on the medial 

 line, but more distinct on either side. Elytra subquadrate- 

 ovate, slightly dilated posteriorly, moderately convex, obsoletely 

 depressed below the basilar space ; strongly punctured, the in- 

 terspaces minutely punctate ; the outer limb and five large 

 patches on the disk white. These patches are arranged as fol- 

 lows : — two at the base, one on each elytron, covering the hume- 

 ral callus, and extending to the outer margin ; three across the 

 middle, the middle one common, the others lateral and attached 

 to the outer limb ; lastly two, larger than the others, placed one 

 at the apex of each elytron. 



85. DiABROTiCA TETRASPiLOTA. Late ovata, postice ampliata, con- 

 vexa, nigra, nitida ; tliorace pallicle fiavo, late subarcuatim excavato, 

 utrinque magis fortiter impresso ; elytris subcrebre punctatis, punctis 

 apicem versus fere deletis ; flavo-albidis, utrisque plagis magnis 

 duabus nigris, prima subrotimdata, a basi ad tertiam partem elytri 

 extensa, secunda subquadrata, vix pone medium posita. Long. 2f lin. 



Mas. Elytris utrisque callis duobus, ante apicem oblique positis, primo 

 valido, subconico, prope suturam, secundo parvo, paullo elevate, 

 prope marginem externum. 



Hal. Fusagasuga : coll. Steinheil. Colombia : my collection. 



Head triangular ; vertex smooth, impunctate ; front impressed 

 above the encarpse with a deep fovea ; encarpge thickened, trans- 

 versely trigonate, shining black; carina distinct, linear ; antennge 

 in the male equal to the body in length, filiform, the second joint 

 ovate, two thirds the length of the third, the latter three fourths 

 the length of the fourth. Thorax nearly twice as broad as long ; 

 sides straight and parallel from the base to the middle, slightly 

 dilated and rounded before the latter ; disk shining, impunctate, 

 its middle broadly excavated, the excavation more deeply im- 

 pressed on either side, its anterior margin straight, its hinder 

 one arcuate. Elytra much broader than the thorax, dilated 

 posteriorly, each rounded at the apex, the sutural angle very 

 obtuse ; above convex, rather closely and distinctly punctured, 

 the puncturing much finer below the middle, nearly obsolete at 

 the apex. 



