South American species of Diabrotica. 35 



joint short, the thuxl one-half longer, the fourth as long as the 

 preceding two united. Thorax one-third broader than long ; sides 

 parallel and slightly sinuate fi-om the base to just beyond the 

 middle, thence obliquely rounded and converging towards the 

 apex ; disk, the extreme lateral margin excepted, convex, smooth, 

 non-foveolate. Elytra oblong, dilated posteriorly, convex, slightly 

 but distinctly excavated on the suture below the basilar space, 

 minutely punctured, plicate on the sides, the subhumeral costa 

 ill-defined, bounded within by a longitudinal groove. 



Spec. 59. Diabrotica arcuata, Baly. 

 L. c, 1859, p. 271. 



Hah. Colombia, Bogota, Magdalena River ; in most 

 collections. 



Spec. 60. Diabrotica Jacobiana, Duvivier. 

 Mem. Soc. des Scien. de Liege, torn xi., p. 47. 

 Diabrotica Gemmingeri, Baly, Journ. Lin. Soc, xix., 



p. 225. 

 Var, A. Elytrorum fascia posticali obsoleta. 

 Var. B. Elj'tro utroque vittis duabus basalibus nigris, una com- 

 muni, cfeteris ut in var. A. 



Diabrotica Jacobi/i, Kirsch, Bed. Ent. Zeit., xxvii., 



1883, p. 200. 

 Hab. Colombia (Stcinheil, Stober). Coll. Jacoby and 

 Baly. 



Spec. 61. Diabrotica Buckleyi, Baly. 



Ann. & Mag. Nat. Hist., 5th ser., iii., 1879, p. 80. 



D. translucida, Jacoby, Proc. Zool. Soc, 1880, p. 603. 



Hab. Ecuador. My collection and that of Mr. 

 Jacoby. 



Spec. 62. Diabrotica discoidalis, Baly. 

 Trans, Ent. Soc. Lend., 1865, p. 349. 

 Hah. Ecuador. Coll. Jacoby and Baly. 



Spec. 63. Diabrotica Kraatzi. 

 Elongata, postice vix ampliata, convexa, flava, nitida, pectore 

 tibiis, tarsis, femoribus interdum dorso, scutello capiteque nigris 



d2 



