SPECIES OF a?HE GENUS DIABEOTICA. 223 



third joints short, equal, the fourth longer than the preceding two 

 united ; the three lower joints, together with the upper two, piceo- 

 fulvous, the rest pale piceous. Thorax rather broader than 

 long ; sides parallel, sinuate behind the middle, converging at the 

 apex ; disk smooth, impunctate, obsoletely excavated transversely 

 across the middle, impressed on either side with a shallow fovea. 

 Elytra oblong, dilated posteriorly, convex, faintly depressed 

 below the basilar space, minutely punctured. 



This insect may possibly be only a variety of the preceding 

 species, in which the thorax is less deeply -excavated. 



24. DiABROTiCA LABIATA. Anguste ovata, pallide prasina, nitida; 

 capite femoribusque viridi-flavis ; tibiis, tavsis, antennisque piceo-fulvis, 

 haruiD articulo basali prasino ; metapectore labroque nigris, scutello 

 piceo ; thorace quam iongiori paullo latiorij, utrinque leviter bifoveo- 

 lato ; elyti'is sat crebre, tenuiter punctatis. Long. 2| lin. 



Sab. Cartago. 



Carina distinct ; front impressed with a deep fovea ; second 

 and third joints of antennge short, the third slightly longer than 

 the second, scarcely more than half the length of the fourth. 

 Thorax rather broader than long ; sides sinuate and parallel from 

 their base to beyond the middle, thence obliquely converging to 

 the apex, the anterior angle slightly excurved, obtuse, the hinder 

 one acute ; disk smooth and shining, impressed on either side 

 with a shallow fovea. Elytra oblong-ovate, slightly impressed 

 below the basilar space, finely punctured. 



25. DiABROTiCA viRESCENS. Auguste clongato-ovata, convexa, pos- 

 tice vix ampliata, pallide flavo-virescens, nitida; tibiis piceo-tinctis, 

 tarsis piceis j capite sordide flavo, antennis piceis ; thorace Isevi, pal- 

 lide virescente, utrinque sat profunde foveolato ; elytris crebre rugoso- 

 punctatis, obsolete elevato-costatis, sordide flavis ; utrisque vitta lata 

 suffusa a paullo infra basin ad apicem extensa, viridi, linea suturali, 

 alteraque submarginali, hac ante apicem abbreviata, piceis. Long. 

 2 lin. 



Hah. Colombia, without precise locality : my collection. 



Head scarcely longer than broad, triangular, eyes large, black ; 

 vertex smooth, impunctate ; front impressed just above the 

 encarpae with a distinct fovea ; encarpse thickened, contiguous ; 

 carina raised, gradually narrowed towards the apex ; antennsB 

 moderately robust, filiform, the second and third joints very short, 

 equal, the fourth more than equal in length to the two preceding 



