SPECIES OE THE GENUS DIABBOTICA. 243 



flattened and obsoletely escarated on the disk. Elytra oblong, 

 sliglitly dilated towards tlie apex, convex, rather strongly punc- 

 tured ; surface with six short black vittse, arranged transversely 

 in two series, one placed at the base and extending nearly to the 

 middle, the second extending from below the middle nearly to tbe 

 apex, the middle vitta in each row common. 



64. DiABROTiCA NiGROGUTTATA, Anguste oblonga, convexa, sordide 

 fulva ; oculis scutelloque nigris, macula verticali picea ; thorace quam 

 longo distincte latiori, Isevi, obsolete punctato, disco leviter subarcu- 

 atim excavato ; elytris distincte subcrebre punctatis, utrisque maculis 

 sex, duabus infra basin, duabusprope medium duabusque ante apicem, 

 transversim dispositis, nigris. Long. 3 lin. 



Sab. IN'are ; Mompos. 



Head trigonate, not longer than broad, vertex shiuing, re- 

 motely punctured ; tliird and fourth joints of antennae nearly 

 equal in length, each much longer tban the second. Thorax 

 broader than long ; sides parallel for the greater part o£ their 

 extent, sinuate from the base to beyond the middle : disk with an 

 ill-defined sublimate excavation. Elytra oblong, slightly dilated 

 towards the apex, moderately convex, distinctly but not closely 

 punctured ; each, elytron with six black patches, arranged trans- 

 versely in pairs as follows : — two below the base, the outer one 

 covering the humeral callus, two about the middle, the outer one 

 sublinear ; and lastly, two halfway between the middle and the apex, 

 this last j)air being placed more obliquely than the previous ones. 



65. DiABEOTiCA ciEOULATA, V. SaroM, Gol. Sefte, xiii. p. 91. 

 Sab. Colombia, my collection ; also Gruatemala and Mexico. 

 In the specimens before me the bead is black, not nigro-seneous. 



66. DiAEROTiCA PiCEO-HNEATA. Anguste oblonga, postice paullo 

 ampliata, flava, nitida ; thorace transversim excavato, utrinque magis 

 fortiter oblique impresso ; elytris oblongis, subcrebre punctatis, vitta 

 costata submarginali, infra humerum interrupta, apicem versus abbre- 

 viata, linea discoidab brevi, maculaque parva subscutellari communi, 

 pallide piceis. Long. 2f lin. 



Sab. Colombia {Dyson). 



Head not longer tban broad, subrotundate ; eyes large, black ; 

 tliird joint of antenna more than twice as long as tbe second, 

 equal in length to the fourtb. Tborax about one third broader 

 than long ; sides parallel and sinuate from their base to beyond 

 tbe middle, thence obliquely converging to the apex ; disk broadly 

 excavated, more deeply impressed on either side with a deep 



