South American species of Diabrotica. 83 



Antennas nearly equal to the body in length, filiform, the second 

 joint short, the third slightly longer, the fourth distinctly longer 

 than the preceding two united ; black, the three lower joints 

 piceous, the ante-penultimate and the penultimate yellowish white. 

 Thorax rather broader than long ; sides nearly straight and con- 

 verging from the base to the apex, narrowly margined ; disk trans- 

 versely convex, impressed just in front of the basal margin with a 

 shallow fovea, the rest of the surface smooth, impunctate. Elytra 

 oblong, dilated posteriorly, convex, closely pimctured, subrugulose ; 

 disk of each elytron with several very faint longitudinal sulcations. 



Spec. 153. Diabrotica crenulata. 



Anguste ovata, postice ampliata, convexa, paUide flava, nitida, 

 pectore, scutello capiteque nigris, vertice antennisque piceis, tibiis 

 tarsisque piceo-tinctis ; thorace obsolete trifoveolato ; elytris 

 minute punctatis, disci medio irregulariter crenulato. 



Long, 4 lin. 



Hab. Ecuador {Buckley). My collection. 



Head triangular, not longer than broad ; clypeal ridge raised, 

 not sharply defined ; antennae slender, filiform, the second and 

 third joints very short, nearly equal in length, the fourth much 

 longer than the preceding two united. Thorax nearly twice as 

 broad as long at the base ; sides slightly converging and slightly 

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

 verging towards the apex, the posterior angles slightly prodiiced 

 laterally, acute ; disk convex, impressed with three small shallow 

 foveae. Elytra narrowly oblong, dilated posteriorly, convex, 

 minutely punctured, the punctures less visible towards the apex ; 

 the middle third of the disk irregularly and coarsely wrinkled. 



Spec. 154. Diabrotica erythrodera, Baly. 

 Ann. & Mag. Nat. Hist., 5th ser., iii., p. 82 (1879). 

 Hab. Peru. A single specimen, my collection. 



Spec. 155. Diabrotica subsulcata, Baly. 

 Trans. Ent. Soc, 3rd ser., ii., 1865, p. 351 

 Hab. Colombia. Coll. Baly, Fry, Jacoby, &c. 



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