346 Mr. J. 8. Baly’s Descriptions of 
Head smooth, impunctate, forehead impressed with an oblong 
fovea. Thorax transverse, sides nearly straight, slightly sinuate 
behind their middle, obliquely deflexed, slightly diverging from 
behind forwards; disc depressed, broadly transversely excavated, 
rugose-punctate. Elytra subelongate, subparallel, slightly dilated 
from the base towards the apex, the latter rounded; surface 
rugose-punctate, disc of each elytron with five or six elevated 
vittee, which commencing below the base are gradually lost towards 
the apex of the elytron, their surface equally rugose with the rest 
of the disc; the curved ridge in the ¢ smooth and nitidous, the 
fulvous colour of the apex extending upwards and covering its 
hinder two-thirds. 
3. Diabrotica puncticollis. 
Elongata, nitida, subtus nigra, supra nigro-eenea ; pedibus pallide 
flavo-fulvis ; tarsis antennisque pallide fuscis, his basi fulvis, 
articuloseptimo abdomineque albis; thorace fortiter crebre 
punctato, dorso utrinque foveolato; elytris subelongatis, 
modice convexis, dorso subdeplanatis, crebre subrugoso-punc- 
tatis, elevato-vittatis, subopacis, margine laterali apice 
dilatato, fulvo. 
Mas.—Elytris ante apicem prope suturam callo valido antice 
excavato armatis. 
Long. 3 lin. 
Hab. Columbia. 
Lower portion of face coarsely punctured; front obliquely 
strigose on either side, impressed in the middle with a longitudinal 
groove. ‘Thorax transverse, sides nearly straight, slightly di- 
verging in front, sinuate behind their middle, all the angles pro- 
minent; disc closely and coarsely punctured, slightly flattened in 
the middle, impressed on either side with a deep fovea, the medial 
space between the two excavations being also depressed. Elytra 
subelongate, subparallel, slightly dilated towards the apex, mode- 
rately convex, flattened along the suture; each elytron with six 
or seven smooth elevated vittee, the interspaces closely punctured, 
subrugose. The elytra in the ¢ are armed with a large smooth 
semi-lunate protuberance, placed transversely close to the suture, 
the concavity looking forwards. 
