336 Mr.J.S. Baly on new Genera and Species of Hispide. 
tuse truncatis, angulo postico in spinam validam latam, dorso in- 
crassatam, apice acutam, retrorsum paullo curvatam, lateraliter ex- 
tensis ; utroque quadricostato, costa tertia minus distincta, medio 
interrupta, apice abbreviata. 
Long. 33 lin. 
Hab. Ega, Upper Amazons. 
Head smooth, finely granulose, moderately produced between 
the eyes; antennz black, six basal joimts smooth, nitidous, free 
from longitudinal grooves, moderately robust, subincrassate, 
basal joint slightly thickened, scarcely shorter than the second, 
third equal to the second, fourth and fifth each rather shorter, 
equal, sixth distinctly shorter than the fifth, seventh as long 
as the two preceding united, somewhat thickened, and, together 
with the four apical joints, forming an opake elongated club, its 
apex acute, and the sutural lines between the last four joints 
obsolete. Thorax twice as broad as long, much narrowed in 
front ; sides narrowly margined, obsoletely crenulate, rounded, 
sinuate near the apex; anterior angles slightly produced into a 
subacute tooth ; above subcylindrical, slightly depressed trans- 
versely near the base, basal lobe with a deep transverse groove; 
centre of disk faintly impressed with a narrow longitudinal 
grooved line; surface closely covered with large rounded punc- 
tures; fulvous, the extreme lateral border and an interrupted 
longitudinal line down the middle of the disk dark metallic 
green. Scutellum shining fulvous, the apical half of its surface 
horizontal, concave, its apex obtusely rounded. LElytra broader 
than the thorax, slightly increasing mm width towards the poste- 
rior angles, the latter produced almost directly outwards into a 
broadly dilated acute spine, the apex of which is curved slightly 
backwards, its upper surface longitudinally elevated; sides 
narrowly margined, finely and somewhat distantly serrated ; 
apical margin narrow, obtusely truncate, its edge serrate ; above 
subdepressed, convex on the sides and apex; shoulders slightly 
prominent, but not raised vertically, their apex subacute; each 
elytron with four elevated coste, the two outer ones less distinct 
than the others, the second from the lateral border being inter- 
rupted in the middle of its course; suture also raised; inter- 
stices deeply bigemellate-punctate. Beneath bright fulvous; 
anterior pair of thighs bidentate beneath, the hinder tooth long, 
acute; four hinder thighs also armed with a long tooth, the 
intermediate pair with a minute tubercle in front ; tibize curved, 
the four anterior armed just withm the apex with a short 
tooth. 
Collection of Mr. Bates and my own, 
