SPECIES OE THE GENUS DIABEOTICA. 253 



one, rather more than half the length of the third, the latter 

 scarcely shorter than the fourth ; the extreme apex of the third, 

 together with the fourth to the seventh joints, nigro-piceous. 

 Thorax nearly twice as broad as long ; sides straight and very 

 slightly diverging from the base to beyond the middle, thence 

 converging to the apex ; above smooth, impunctate, hinder disk 

 with a broad, shallow, siibarcuate excavation. Elytra much 

 broader than the thorax, broadly ovate, dilated towards the apex ; 

 above convex, slightly flattened along the suture, finely but 

 distinctly punctured, the punctures nearly obsolete on the hinder 

 disk ; the hinder portion of the surface entirely covered by a 

 large common black patch, which extends from just before the 

 middle disk to the apex ; owing to the flayous colouring extending 

 rather lower on the sides, tiie anterior margin of the patch is 

 convex, 



83. DiABKOTiCA LUGUBRis, De/eaWjM-S. Late ovata, posticeampliata, 

 convexa, nigra, nitida ; thorace obsolete subarcuatim excavato ; elytris 

 remote punctatis, flavo-albidis, utrisque plagis magnis duabus, una 

 ante, altera pone medium, nigris. Long. 2| lin. 



I£ah. Colombia. 



Head not longer than broad ; antennae equal to the body in 

 length, filiform, third joint nearly twdce the length of the second, 

 nearly equal to the fourth. Thorax twice as broad as long; 

 sides parallel and nearly straight from the base to the apex, 

 slightly sinuate behind the middle ; anterior angle obliquely 

 truncate ; transversely convex, finely and somewhat irregularly 

 but not closely punctured, hinder disk with a large, shallow, 

 ill-defined, semiluuate depression. Elytra convex, gradually 

 dilated posteriorly, the outer limb narrowly dilated ; surface 

 subremotely punctured. 



84. DiABROTiCA LEucospiLA. Late ovata, postice ampliata, con- 

 vexa, nigra, nitida ; thorace transverse, tenuiter, remote punctate, 

 disco evidenter arcuatim excavato ; elytris late oblongis, postice am- 

 pliatis, modice convexis, sat fortiter subcrebre punctatis ; limbo ex- 

 teiuo maculisque magnis quinque, duabus ad basin, tribus prope 

 medium, harum una communi, duabusque apicalibus albidis. Long. 

 2 lin. 



Mas. Elytris singulis callo subcouico, ante apicem juxta suturam posito, 

 instructis. 



Hah. Magdalena Eiver. 



Head scarcely longer than broad. Antennae nearly three 



