South American species of Diabrotica. 57 



are very ill-defined, and it is very possible that occa- 

 sionally the third one is obsolete ; in all respects it 

 agrees closely with his description. In the pattern of 

 the elytra it resembles I), atrivittata, but differs in its 

 narrower form and in the foveolate thorax. 



Spec. 100. Diabrotica atrivittata. 



Ent. Month. Mag., xxv., p. 252. 



Ovata, postice ampliata, convexa, flava, nitida, pectore nigro, 

 scutello capiteque nigro-piceis, antennis flavis, articulis intermediis 

 oculisque nigris, thorace convexo, laevi ; elytris crebre punctatis, 

 ad latera plicatis, utroque suturae basi, vitta humerali a basi ad 

 longe pone medium extensa alteraque discoidali utrinque abbre- 

 viata, nigris. 



Long. 3 lin. 



Hab. Brazil, Rio Janeiro, St. Paulo (Fry), Coll. 

 Fry and Baly. 



Head triangular ; clypeus with a well-defined longitudinal 

 ridge ; antennae filiform, three-fourths the length of the body, the 

 second joint short, the third nearly one-half longer, the fourth 

 slightly longer than the preceding two united ; pale flavous, the 

 fifth to the eighth, together with the apex of the fourth, black. 

 Thorax one-third broader than long ; sides nearly straight and 

 parallel from the base to the middle, thence obliquely rounded and 

 converging towards the apex; above convex, shining, impunctate. 

 Elytra broadly ovate, slightly dilated posteriorly, their apices broadly 

 rounded ; convex, rather closely punctured, subhumeral costa dis- 

 tinct, extending downwards as far as the middle of the elytron. 



Spec. 101. Diabrotica Kirbyi. 



Anguste oblongo-ovata, postice paullo ampliata, convexa, pal- 

 lide flava, nitida, pectore, scutello capiteque nigris, pedibus anten- 

 narumque basi fulvo-flavis ; thorace obsolete bifoveolato ; elj'tris 

 crebre punctatis, flavo-albidis, utroque sutura ante medium, vitta 

 humerali fere ad apicem extensa, alteraque discoidali, utrinque 

 abbreviata, nigris. 



Long. 3 lin. 



Hab. Brazil, Parana ; a single specimen in my own 

 collection. 



Head triangular, not longer than broad ; clypeus convex, the 

 longitudinal ridge nearly obsolete ; antennte filiform, moderately 

 robust, the second joint short, submoniliform, the third rather 



