1889.] COLEOPTERA OF THE GENUS DIABROTICA. 91 
16. DIABROTICA LIMITATA, Sp. Nov. 
Ovata, postice ampliata, convexa, flava, nitida ; pectore, tibiis, tarsis 
capiteque nigris ; antennis basi pices, apice albidis ; thorace flavo- 
rufo, disco late ewcavato, leviter trifoveolato, fovea intermedia 
minus distincta, interdum obsoleta; scutello piceo ; elytris sat 
erebre punctatis, pallide flavis, utrisque linea suturali et vitta 
submarginali, apicem versus abbreviatis, necnon lineis duabus 
transversis, una vie ante medium, secunda inter medium et 
apicem, plerumque cum vitta submarginali connezis, nigris. 
Long. 4 lin. 
Hab. Eastern Ecuador. 
Section I1.—Third joint of antennz equal in length or nearly so 
to the fourth. 
17. DIABROTICA TUBERCULATA, Sp. nov. 
Sat late ovata, postice paullo ampliata, convewa, subtus cum 
scutello capiteque nigris, antennis apice sordide fulvis ; thorace 
elytrisque flavis, illo arcuatim excavato, et utrinque puncto nigro 
parvo notato, his tenuiter punctatis, utrisque plagis magnis 
duabus, una ad basin, altera pone medium nigris. 
Mas. Elytris ante apicem juwta suturam tuberculo conico valido 
instructis. 
Long. 3 lin. 
Hab. Eastern Ecuador. 
18. D1iaBROTICA HEMIXANTBA, Sp. nov. 
Ovata, postice ampliata, convexa, nigra, nitida ; femoribus basi, 
thorace elytrorumque dimidio antico flavis ; thorace leviter trans- 
versim sulcato ; elytris distincte punctatis, punctis apicem versus 
Fere obsoletis. 
Var. Pedibus totis nigris. 
Long. 3 lin. 
Hab. Upper Amazons. 
19. DiaABROTICA INTERRUPTO-LINEATA, Sp. NOv. 
Ovata, postice ampliata, conveza, fulvo-flava, nitida; pectore, 
scutello, cupitis vertice, ore antennisque nigris, his apice albidis ; 
thorace levi; elytris crebre punctatis, flavis, utrisque linea 
discoidali, infra basin late interrupta et longe ante apicem 
abbreviata, alteraque sublaterali, a basi fere ad apicem eatensa, 
nigris. 
Long. 33 lin. 
Hab. Brazil. 
20. DriaABROTICA NOTATICOLLIS, sp. Ov. 
Anguste ovata, postice ampliata, convexa, flava, nitida ; pectore, 
femoribus, dorso, tibiis posticis, tarsis, antennis (basibus exceptis), 
