New Genera and Species of Phytophaga. 347 
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4, Diabrotica sublimbata. 
Elongata, viridi-fusca, nitida; abdominis segmentorum mar- 
ginibus femoribusque pallidis; antennis nigris, articulis duobus 
ultimis (ultimi apice excepto) albis ; thorace elytrisque pra- 
sinis, illo dorso bi-impresso, fusco-signato, his intra mar- 
ginem unicostatis, crebre punctatis, sutura linedque submar- 
ginali nigro-fuscis. 
Long. 23 lin. 
Hab. Amazons. 
Thorax subquadrate, sides nearly parallel, slightly sinuate, con- 
verging towards their apex; upper surface flattened, impressed 
in the middle with two large foveee; three small patches placed in 
a triangle on the disc, together with a submarginal vitta on either 
side, fuscous. Elytra subelongate, slightly increasing in width 
from the base towards their apex, moderately convex, closely 
punctured; on each elytron, just within the lateral border, is a 
broad costa, which, commencing at the humeral callus, termi- 
nates a short distance below the middle of the elytron; surface 
immediately within the costa sulcate. Body beneath clothed with 
coarse adpressed griseous hairs. 
5. Diabrotica Deyrollei. 
Elongata, nigra, nitida; antennarum articulis duobus ultimis basi 
albis; epistomate, femoribus (his nigro-lineatis) thoraceque 
pallide flavis; hoc levi, dorso obsolete bi-impresso, vitt& 
nigra tenuissima basi dilatata instructo; elytris oblongis, 
subparallelis, medice convexis, subopacis, minute granulosis, 
sat fortiter subcrebre punctatis, obscure viridi-eneis, utrisque 
fascia Jat&é prope medium, utrinque abbreviata, antice et 
postice emarginatA, maculisque rotundatis duabus, altera 
infra basin alteraque subapicali, flavo-albis. 
Long. 4 lin. 
Hab. New Granada (Magdalena River). 
Front triangularly impressed above the eyes. Thorax transverse, 
sides nearly straight and parallel, converging at their apex, anterior . 
angles produced into an obtuse tooth; dise smooth, faintly ex- 
cavated on either side. Elytra narrowly oblong, subparallel, 
apex regularly rounded; surface finely granulose, somewhat 
coarsely punctured. 
I have named this species after M. H. Deyrolle of Paris. 
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