uncharacterised species of Diabroticu. 445 



than long ; sides nearly parallel from the base to beyond the 

 middle ; disk convex, impunctate. Elytra convex, finely but 

 rather closely punctured. 



Dia hrofica Grayclhi . 

 Subelongata, convexa, pallide flava, nitida, scutello capiteque 

 piceis, pectore, oculis antennisque nigris, his basi et apice fiavis ; 

 thorace laevi, dorso obsolete bifoveolato ; elytris distincte, sat crebre 

 jmnctatis ; utrisque maculis quatuor, duabus baseos duabusque ante 

 apicem, his oblique positis, nigris. Long. 2| — 3 lin. 



Hab. Brazil, Petropolis, Constantia {Grdij). 



Head piceous or fulvo-piceous ; antennae filiform, black, the four 

 or five lower joints, together with the apical two, fulvous or flavous ; 

 the second and third joints short, nearly equal in length, the fourth 

 longer than the preceding two united. Thorax rather broader 

 than long ; sides nearly straight and parallel, slightly converging 

 at the apex ; disk smooth, obsoletely bifoveolate.''-' Elytra oblong, 

 dilated posteriorly, rather closely punctured ; on each elytron 

 below the humeral callus is a faintly raised longitudinal ridge, and 

 on the inner disk before the middle are several very faint longi- 

 tudinal sulcations, only visible when viewed obliquely. 



Diabrotica intcrrupta. 

 Subelongata, postice paullo ampliata, flava, nitida, pectore, abdo- 

 minis segmento anali, tibiis, tarsis, scutello capiteque nigris, antennis 

 basi fulvis, articulis penultimis duobus albidis ; thorace laevi, 

 obsolete biimpresso ; elytris tenuiter sat crebre punctatis, linea 

 suturali vittaque submarginali ante apicem interrupta, nigris. Long. 

 3 Hn. 



Hab. Amazons, Para [Bates). 



Antennae slender, filiform, the second and third joints very short, 

 equal. Thorax about one-third broader than long ; sides sinuate 

 posteriorly, slightly converging at the apex; disk convex, smooth, 

 obsoletely impressed on either side. Elytra narrowly oblong; 

 upper surface finely punctured ; a narrow sutural line and a sub- 

 marginal vitta, which extends from base to apex, but is interrupted 

 just before reaching the suture, black. 



Diabrotica Dtivivieri. 



Anguste ovata, postice ampliata, nigra, nitida, thorace inferiori 

 pectoreque rufo-piceis, abdomine, coxis, feinoribus antennisque basi 



*" In some specimens these foveae are entirely absent. 

 TRANS. ENT. SOC. LOND. 1886. — PART IV. (DEC.) 2h 



