250 MR. J. S. BALY OX THE COIiOMBIAN 



76. DiABROTicA XANTHOPTERA. Ovata, postice ampliata, sat valde 

 convexa, nigra, nitida ; capite thoraceque rufo-testaceis, pedibus anten- 

 nisque flavis, hisS apice infuscatis, scutello piceo ; thorace Isevi, 

 minute punctato, utrinque fovea obliqua profunde impresso ; elytris 

 late oblongis, postice ampliatis, apice obtuse rotundatis ; sat valde con- 

 vexis, flavis, subseriato-punctatis, punctis piceo tinctis, lineis longi- 

 tudinalibus nonnuUis impunctatis instructis. Long. 3^ lin. 

 Mas. Facie inferiori profunde excavata, nigra. 

 ITab. Magdalena E-iver. 



Head longer than broad, snbtrigonate ; labrum piceous ; an- 

 tennse slender, the third and fourth joints equal in length. 

 Thorax one half broader than long ; sides parallel and slightly- 

 sinuate from the base to the middle, thence obliquely converging 

 towards the apex ; disk smooth, very minutely and subremotely 

 punctured, deeply depressed on either with an oblique oblong 

 fovea. Elytra broadly oblong, dilated towards the apex, the 

 latter obtusely rounded ; above rather strongly convex, subseriate- 

 punctate, the punctures more or less stained with piceous ; inner 

 disk with several narrow impunctate longitudinal lines. The 

 apices of the elytra are rather less obtuse than in the other 

 species of this subsection. The antennae in the only male known 

 to me are broken off. 



77- DiABROTiCA FENESTRATA. Ovata, convexa, postice ampliata, 

 sat valde convexa, nigra, nitida ; capite thoraceque rufo-testaceis, pedi- 

 bus antennisque flavis, scutello piceo ; thorace Isevi, disco utrinque 

 foveolato, spatio inter foveas transversim depresso ; elytris subseriatim 

 punctatis, pone medium obsolete elevato-vittatis, utrisque limbo (limbo 

 suturali pone medium obsolete), fasciis duabus, una ante, altera vix 

 pone medium positis, vittaque discoidali a basi ad fasciam primam 

 extensa, flavis. Long. 3 lin. 

 Hab. Venezuela : a single specimen from the late Mr. W. W. 

 Saunders's collection. 



Head scarcely longer than broad ; labrum and mouth black ; 

 clypeus smooth, remotely punctured, medial line with a faint 

 longitudinal ridge ; antenuge filiform, the third and fourth joints 

 equal in length. Thorax one half as broad again as long ; sides 

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

 converging to the apex ; disk smooth, impressed on either side 

 with a deep subrotundate fovea, the space between the fovesB 

 narrowly depressed. Elytra broadly oblong, dilated towards the 

 apex, the latter obtuse ; above convex, rather strongly punctured ; 

 hinder disk with several ill-defined longitudinal ridges. 



