South American species of Diabrotica. 47 



lonsritudinal ridge ; antennae moderately robust, filiform, rather 

 more than half the length of the body, the second joint short, the 

 third more than one-half longer than the second, the fourth equal 

 in length to the preceding two united ; the three lower joints, 

 together with the two upper ones, fulvous, the rest black. Thorax 

 more than one-half broader than long ; sides nearly straight and 

 parallel from the base to beyond the middle, thence obliquely con- 

 verging and slightly rounded towards the apex, the anterior angles 

 obtuse, the hinder ones acute ; upper surface smooth, impunctate, 

 convex, flattened on the central disk, trifoveolate, the two anterior 

 foveas rather strongly impressed, the third small and ill-defined, 

 placed just in front of the basal margin. Elytra ovate, ratlier 

 strongly dilated posteriorly ; above convex, finely and closely 

 punctured. 



Spec. 84. Diabrotica septemliturata, Erichs. 



Diabrotica lineolata, Kirseh, Berl. Entom, Zeits., 

 xxvii., p. 202, 1883. 



Subelongato-ovata, jiostice ampliata, convexa, pallide flava, 

 pectore, ore antennisqi;e nigris, his ad basin plerumque flavis, apice 

 albido, articulis iutermediis interdum fuscis ; thorace excavato, 

 trifoveolato, foveis interdum fere obsoletis ; elytris ad latera 

 plicatis ; utroque vittis basalibus duabus, brevibus, una communi, 

 altera humerali, maculisque lineariformibus duabus, pone medium 

 transversim positis, nigris. 



Var. A. Capite rufo-piceo aut nigro. 



Diabrotica septemliturata, Erichs., Wiegm. Archiv., 1847, i., 

 p. 167. 



Var. B. Elytri vittis basalibus confiuentibus, capite ut in 

 var. B. 



Var. C. Elytri maculis posticis duabus inter se confiuentibus. 



Var. D. Ore flavo. 



Hab. Peru, Chancliamayo (Thamm) ; Amazons 

 (Bates) ; Bolivia. Common in collections. 



Head not longer than broad ; clypeal ridge ill-defined ; antennae 

 filiform, rather more than three-fourths the length of the body, 

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

 longer than the preceding two united ; black, the three outer joints 

 yellowish white, the three or four basal ones sometimes piceo- 

 flavous ; in some specimens the antennae are entirely of this latter 

 coloiir, the intermediate joints being scarcely, if at all, darker than 

 the rest. Thorax one-third broader than long ; sides j)arallel and 



