collected by the late M. Mouhot, &c. 313 
of the elevated portion of the disk forming a centre to the con- 
centric deeply punctured and somewhat vermicular striae with 
which it is surrounded, Elytra twice as long as broad, sides 
slightly sinuate for two-thirds of their length, then swelling out 
beyond the middle and converging to the apex, which is largely 
rounded and very slightly denticulate ; disk rugose, green, sides 
coppery. Beneath and legs bronzy, punctured. 
By the aid of a strong glass the whole insect is seen to be co- 
vered with scattered hairs. 
Length 4 lines ; breadth 13. 
Laas. 
Corcebus denticollis, n. sp. 
C. capite viridi, punctato ; thorace antice viridi-ceruleo, postice 
purpureo, lateribus denticulatis ; elytris purpureis, rugosis, 
apice 4-spinoso, dimidio postico pubescentia cinerea 
vestito. 
Head green, punctured, furrowed between the eyes, pubescent 
in front. Thorax green-blue in front, purple behind and on the 
sides ; anterior margin slightly produced, sides rounded and regu- 
larly denticulate, base largely lobed; disk very convex, rugose 
and transversely striated; base and sides deeply foveated, the 
foveze almost meeting at the base, giving the disk a very elevated 
appearance. Elytra two-thirds as wide as long, dark purple, 
sides swelling out beyond the middle, thence gradually rounded to 
the apex, which is truncate and armed with four spines; the pos- 
terior portion for not quite one-half of the length of the elytra is 
covered with a grey silvery pubescence; disk covered with scale- 
like rugosities. Beneath rugose, covered with a silvery pu- 
bescence. 
Length 4 lines; breadth 13. 
Laas. 
Corcebus violaceipennis, n. sp. 
C. capite viridi, punctato; thorace viridi, rugoso, basi sinuato; 
elytris violaceis, rugosis, apice rotundato et denticulato: Sub- 
tus ceruleus, albipubescens. 
Head green, punctured, deeply furrowed in front, covered with 
a remote pubescence. Thorax green, once and a third as broad 
as long, anterior margin almost straight, sides gradually rounding 
from the anterior angles, base largely and deeply lobed; disk 
“2 
