74 
Mr. J. S. Baly on new Genera 
antennisque fulvis ; thorace trifoveolato; elytris rugosis, lgete 
viridi-metallicis, limbo exteriore anguste rufo-fulvo. 
Mas elytris fovea magna communi elevato-marginata ante apicem 
posita instructis. 
Long. 3 liu. 
Hob. Bolivia. 
Head rather longer than broad, elongate-trigonate; front 
impressed above the encarpse with a deep fovea ; encarpse not 
distinctly separated from the front; carina raised, linear; an¬ 
tennas filiform, the second joint short, the third nearly twice 
its length, more than half as long as the fourth. Thorax one 
fourth broader than long; sides straight and parallel, slightly 
sinuate from the base to the middle, thence slightly converging 
to the apex, the hinder angle armed witli a small tubercle ; 
surface sparingly impressed with Very fine punctures; disk 
trifoveolate, the middle fovea shallow, placed just in front of 
the basal margin; the two others, situated one on either side 
the middle disk, are large and more deeply excavated. Elytra 
ovate, dilated posteriorly, convex, rugose-punctate. 
Diabrotica rufolimbata. 
D. subelongata, prasina, nitida, capite fulvo ; antennis, basi excepta, 
piceo tinctis, articulis octavo nonoque piceis; thorace transverso- 
quadrato, obsolete triimpresso, tenuiter punctato ; scutello piceo ; 
elytris subcrebre punctatis, extrorsum rufo limbatis ; tarsis fulvo 
tinctis. 
Long. 4 lin. 
Hab. Rio de la Plata. 
Third joint of antenna? twice the length of the second, 
scarcely more than half the length of the fourth; eyes 
black. Thorax broader than long; sides reflexed, parallel 
from the base to beyond the middle, slightly sinuate, thence 
obliquely rounded and converging to the apex ; disk finely 
and not closely punctured, faintly i repressed with three 
shallow ill-defined fovea?. Scutellum trigonate, piceous. 
Elytra narrow, oblong, more closely and more strongly' punc¬ 
tured than the thorax, broadly margined with rufo-fulvous. 
Body beneath clothed with griseous hairs. 
Diabrotica viridilimbata. 
D. elongata, pallide rufo-fulva, nitida, antennis extrorsum nigris; 
thorace bifoveolato, olivaceo; elytris crebre punctatis, rufo-fulvis, 
limbo exteriore viridi. 
Long. 4 lin. 
Hab. - -? 
Front impressed with a deep fovea ; carina linear, well 
defined ; antenna? filiform, the second joint short, the third 
