SPECIES OF THE GENUS DIABROTICA. 245 



pliatis, apice obtusis ; sat valde convexis, infra basin prope suturam 

 leviter transversim depressis, subseriatim punctatis, pone medium ob- 

 solete elevato-vittatis ; nigris, fasciis duabus, una infra basin, plerum- 

 que interrupta, altei'a prope medium, ad marginem vix abbreviata, 

 limboque apicali, flavis. Long. 3 lin. 



Var. A. Elytrorum fascia subbasali obsoleta. 



Mas. Facie inferiori non excavata ; antennarum articulis, basali curvato, a 

 paullo ante basin ad apicem incrassato, secundo brevi,compresso, tertio 

 quam ille duplo longiori, quarto ad pra;cedentes duos iequilongo, leviter 

 curvato. 



F(£,m. Antennis filiformibus, articulo tertio quam quartus paullo breviori. 



Hah. Sauta Marta ; Magdalena Eiver ; Muzo ; "Western 

 - Colombia ( ?F/«/t;/dr) ; Venezuela, Bogota. 



Head scarcely longer than broad, subtrigonate ; clypeus in 

 either sex with an ill-defined slightly raised longitudinal ridge. 

 Antennas in the female slender, filiform, the third joint rather 

 shorter than the fourth ; in the male the antennae are more robust 

 than in the female, the first joint being curved below the middle, 

 slender at the base, and thence thickened to the apex ; the second 

 very short, compressed and only half the length of the third ; whilst 

 the fourth, which is slightly curved, is as long as the preceding 

 two united. Thorax one half broader than long ; sides straight 

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

 verging to the apex, the hinder angle acute ; disk smooth, finely 

 but remotely punctured, deeply impressed on either side with 

 an oblique oblong fovea. ' Elytra broadly oblong, gradually 

 dilated towards the apex, the latter obtuse, very strongly con- 

 vex, transversely excavated on the suture below the basilar space ; 

 subseriate-punctate, the puncturing finer than in D. JeJcelii; 

 hinder disk with several ill- defined longitudinal costae. 



This species stands very close to D. mimula, v. Harold, an insect 

 I only know from the author's diagnosis. The male differs in the 

 absence of the tooth at the apex of the basal joint of the antennae, 

 and in the second joint of the latter being compressed and 

 unilaterally dilated, not subglobose as stated by H. v. Harold. 

 There is also a difference in the coloration of the elytra ; the 

 author gives the marginal limb as testaceous ; in the present 

 insect the apical limb is flavous, the lateral margin being con- 

 colorous with the disk. In all the specimens that I have seen, 

 some twenty in number, this character is constant. 



LINN. JOURN. — ZOOLOGY, VOL. XI5. 20 



