1889.] COLEOPTERA OF THE GENUS DIABROTICA. 91 



16, DiABROTICA LIMIT ATA, Sp. nOV. 



Ovata, postice ampliata, convexa,flava, nitida ; pectore, tibiis, f arsis 

 capiteque nigris; antennis basipiceis, apice albidis; thoracejlavo- 

 rufo, disco late excavato, lemter trifoveolato, fovea intermedia 

 minus distincta, interdum obsoleta ; scutello piceo ; elytris sat 

 crebre punctatis, pallide Jlavis, ntrisque linea suturali et vitta 

 submarginali, apicem versus abbreviatis, necnon lineis duabus 

 transversis, una vix ante medium, secunda inter medium et 

 apicem, plerumque cum vitta submarginali conyiexis, nigris. 



Long. 4 lin. 



Hab. Eastern Ecuador. 



Section II. — Third joint of antennae equal in length or nearly so 



to the fourth. 



17. DiABROTICA TUBERCULATA, Sp. HOV. 



Sat late ovata, postice paullo ampliata, convexa, subtus cum 

 scutello capiteque nigris, antennis apice sordide fulvis ; thorace 

 elytrisque jlavis, 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 juxta suturam tuber culo conico valido 

 instructis. 



Long. 3 lin. 



Hab. Eastern Ecuador. 



18. DiABROTICA HEMIXANTHA, Sp. BOV. 



Ovata, postice ampliata, convexa, nigra, nitida ; femoribus basi, 

 thorace elytrorumque dimidio antico jlavis ; thorace leviter trans- 

 versim sulcato ; elytris distincte punctatis, punctis apicem versus 

 fere obsoletis. 



Var. Pedibus totis nigris. 



Long. 3 lin. 



Hab. Upper Amazons. 



19. DiABROTICA INTERRUPTO-LINEATA, Sp. HOV. 



Ovata, postice ampliata, convexa, fulvo-fiava, nitida; pectore, 

 scutello, capitis vertice, ore antennisque nigris, his apice albidis ; 

 thorace Icevi ; elytris crebre punctatis, jlavis, utrisque linea 

 discoidali, infra basin late iiiterrupta et longe ante apicem 

 abbreviata, alteraque sublaterali, a basi fere ad apicem extensa, 

 nigris. 



Long. 3| lin. 



Hab. Brazil. 



20. DiABROTICA NOTATICOLLIS, Sp. UOV. 



Anguste ovata, postice ampliata, convexa, flava, nitida ; pectore, 

 femoribus, dor so, tibiis posticis, tarsis, antennis (basibus exceptis). 



