318 Mr. J. 8. Baly on some 
Gdionychis limbata. 
@. elongato-ovalis, modice convexa, dorso subdepressa, subtus sor- 
dide albido-flava, prosterno, genibus, tibiis tarsisque nigro-piceis; 
supra nigra, antennarum articulis basali necnon ultimis quatuor 
piceis; facie, thoracis lateribus latis elytrorumque limbo exteriore 
lato albido-flavis; prosterno inter coxas longitudinaliter elevato. 
Long. 34 lin. 
Hab. Ecuador. 
Vertex and front smooth, impunctate ; lower portion of front 
depressed, separated from the encarpe by a transverse grooved 
line ; encarpe large, quadrangular, slightly oblique, contigu- 
ous; carina strongly raised, elongate ; antenne filiform, the 
third and fourth joints equal; labrum and jaws piceous; eyes 
large, prominent. Thorax with its sides very broadly mar- 
gined, reflexed, slightly converging at the extreme base, 
rounded and converging before the middle to the apex, the 
anterior angles thickened, produced anteriorly into a slightly 
excurved, obtusely truncate tooth ; basal margin very faintly 
sinuate on either side close to the outer angle, the interme- 
diate space transversely truncate ; upper surface very faintly 
impressed transversely in front of the base, very minutely 
punctured ; lateral margin longitudinally excavated. Scutel- 
lum trigonate, its apex obtuse ; on the disk near its apex is a 
piceous spot. lytra broader than the thorax, oblong, mode- 
rately convex, slightly depressed along the suture, the lateral 
margin broadly dilated, its outer edge slightly reflexed ; 
surface rather closely punctured, interspaces subrugulose. 
minutely punctured. 
Cdionychis circumcincta, De}. 
. late ovata, convexa, flava, nitida, antennis (basi excepta) nigris ; 
thorace levi, lateribus late explanatis, subruguloso; scutello 
nigro; elytris crebre, fortiter punctatis, interstitiis granulosis, 
crebre rugulosis. 
Var. A. elytris metallico-viridibus, limbo externo flavo. 
Var. B. elytris rufo-testaceis, limbo externo flavo, fascia basali 
communi, extrorsum abbreviata, vittaque submarginali, a basi ad 
apicem extensa, metallico-viridibus. 
Long. 4-6 lin. 
Hab. Brazil. 
Vertex smooth, impunctate ; front very sparingly impressed 
with round punctures, its lower end depressed, separated from 
the encarpe by a transverse groove; inner orbit of eye irre- 
gularly punctured ; encarpe transverse; contiguous above ; 
carina broad, its apex acuminate, separating the lower 
portion of the encarpe, its lower end terminating in a strongly 
