SPECIES OF THE GENUS DIABHOTICA. 255 



86. DiABROTiCA pROPiNauA. Late ovata, postice atnpliata, convexa, 

 nigra, uitida ; pedibus abdomineque piceo-fulvis ; thorace transverse, 

 granuloso, subcrebre punctato, late sed leviter arcuatim excavato ; 

 elytris subcrebre punctatis, utrisque plagis magnis duabus, una infra 

 basin, altera pone medium, nigris. Long. 2 lin. 



Hah. Sta. Martha. 



Head not longer than broad, trigonate ; clypeus with a 

 strongly raised longitudinal ridge ; antennas with the third joint 

 slightly longer than the fourth, the second joint short, the first 

 to the seventh piceous, the eighth pale piceo-fulvous, the rest 

 wanting. Thorax more than twice as broad as long ; sides 

 obliquely diverging from the base to beyond the middle, thence 

 rounded and converging to the apex ; upper surface transversely 

 convex, granulose, finely but distinctly punctured ; disk with a 

 broad shallow semilunate excavation ; lateral margin broad, re- 

 flexed. Elytra dilated towards the apex, tbe latter broadly 

 rounded ; convex, distinctly but not closely punctured, their 

 interspaces minutely punctate ; each elytron with two large 

 black patches, the first subquadrate, placed below the base, the 

 second rather less regular in shape, halfway between the middle 

 and the apex. 



87. DiABROTiCA ROBUSTA. Late ovata, postice arapliata, convexa, 

 flava, nitida ; antennis, articulo basali excepto, femoribus dorso, tibiis 

 tarsisque nigris ; thorace Isevi, transvei'sim subarcuatim sulcato ; 

 elytris convexis, subremote punctatis, utrisque maculis tribus, duabus 

 infra basin transversim positis, tertiaque vix pone medium, subrotun- 

 data, nigris. Long. 2|hn. 



Sab. Muzo ; Sta. Martha ; Magdalena B,iver ; Bogota. 



Head longer than broad, subeuneiform ; clypeus with a longi- 

 tudinal ridge ; antennae filiform, third and fourth joints equal, 

 each twice the length of the second. Thorax twice as broad as 

 long ; sides parallel, slightly dilated and convex before the 

 middle ; transversely convex; hinder disk with an ill-defined semi- 

 lunate excavation, which is rather more dej)ressed on either side. 

 Elytra convex, dilated posteriorly, narrowly depressed along the 

 suture at the base, outer limb narrowly dilated ; surface finely 

 but not closely punctured. 



88. DiABROTiCA sERRATicoRNis. Late ovata, postice pauUo ampliata, 

 convexa, flavo-albida, nitida; tibiis, basi excepta, tarsisque piceisj 

 scutello, ore oculisque nigris; antennis leviter infuscatis; thorace 

 transverse, Isevi, pone medium" leviter transversim excavato; elytris 



