216 ME. J. S. BALT ON THE COLOMBIAN 



elytris tenuiter punctatis, flavis, maeulis 11 — 3 basi, harum una eom- 

 muni, 4 ante medium et 4 inter medium et apicem positis, nigris 

 ornatis ; fascia male definita vix pone medium, interdum interrupta, 

 maculaque apicali suffusa pallide rufo-piceis. Long. 3 lin. 

 Var. A. Thorace pallide, elytrorum signaturis rufo-piceis obsoletis. 

 Sab. Colombia: my collection. Var. A. Oceana: coll. Stein- 

 laeil. 



Head not longer than broad ; front impressed above the en- 

 carpse with a deep fovea ; encarpee thickened, contiguous ; carina 

 raised, very narrowly wedge-shaped ; antennae filiform, entirely 

 fulvous ; the second and third joints very short, nearly equal, 

 the fourth as long as the two preceding united. Thorax rather 

 broader than long ; sides rather broadly margined, parallel and 

 sinuate from the base to beyond the middle, thence converging 

 to the apex, all the angles produced, subacute ; disk moderately 

 convex, bifoveolate, shining, impunctate, more or less stained with 

 rufo-piceous, in highly coloured specimens the entire disk being 

 piceou?, with the limb obscure fulvous. Elytra broader than the 

 thorax, dilated posteriorly, convex, rather closely and distinctly 

 punctured, pale yellow, marked with eleven bluish-black spots : 

 of these three are larger than the rest and subquadrate, placed 

 at the base — one on either elytron covering the humeral callus, 

 and a third common, surrounding the scutellum ; the eight others 

 form two slightly curved transverse rows, one just before the 

 middle, the other halfway between the middle and the apex . 

 the rufo-piceous markings vary greatly in extent, and are some- 

 times entirely wanting 



7. DiABROTTCA SPiLOTA. Subelongata, postice paullo ampliata, flavo- 

 fulva, nitida ; pectore capiteque (antennis exceptis) nigris ; thorace 

 rufo-fulvo, laevi, disco non foveolato ; elytris minute sat crebre punc- 

 tatis, flavis, maeulis 11 — 3, 4,4 — ut in D. Ais^nbreica dispositis, caeru- 

 leo-nigris aut nigris. Long. 3 Hn. 



Var. A. Elytrorum macula basali communi obsoleta. 



Hob. Venezuela, Mexico, and Oceana {Landolt). 



Very similar in coloration and in the pattern of its elytra to 

 D. histrionica ; its thorax is smooth and impunctate ; the dis- 

 coidal fovefe, present in the former species, are obsolete ; the 

 rufo-fulvous markings on the elytra are rarely wanting. 



8. DiABROTiCA NiGRONOTATA. Ovata, postlcc ampliata, valde con- 

 vexa, flava, nitida ; tibiis, tarsis, metasterno, scutello capiteque nigris; 

 antennis pallide piceis ; thorace quam longiore vix latiori, convexo. 



