collected bg the late M. Mouhot, Sc. 317 
ment of the abdomen with a spot on either side of a white mealy 
pubescence. 
Length 43—33 lines; breadth 14—1. 
Pachbon, Laas. 
I have a smaller specimen from Laas with four spots on 
each elytron, the fourth one very small and almost touching the 
apex, 
Agrilus leucostictus, n. sp. 
A. niger; capite punctato; thorace transversim strigoso, disco 
impresso ; elytris minute rugosis, apice sex-spinoso, utrisque 
maculis tribus albis ornatis: Subtus punctatus, pectoris late- 
ribus maculaque in tertio abdominis segmento albipubes- 
centibus. 
Head black, flat, deeply punctured, and transversely ridged. 
Thorax black, once and a-half as broad as long ; anterior margin 
rounded, sides rounded, base with a shallow lobe, lateral carinze 
much arched behind ; disk strongly ridged transversely, with a 
broad dorsal depression, which slightly widens at the base. Elytra 
black, about three times as long as broad; sides almost straight 
for about two-thirds of their length, then converging to the apex, 
which is armed with six spines, the central spine on each elytron 
being longer than the rest ; disk covered with very minute scale-like 
rugosities, with three white pubescent spots on each elytron, one 
near the shoulder, another midway between the apex and the base, 
and the third, a larger one, about one quarter of the entire length 
of the elytra from the apex. Abdomen bordering the elytra near 
the centre, exhibiting a white spot on the first segment. Beneath 
punctured, slightly pubescent, with the sides of the breast and a 
spot on the third segment of the abdomen covered with a vel- 
vety-white pubescence. 
Length 43 lines; breadth 1}. 
Siam. 
Agrilus eneicollis, n. sp. 
A. capite zreo-viridi, pubescente; thorace punctato trans- 
verseque strigoso, lined dorsali aurea ; elytris minute rugosis, 
pubescentibus, fascia nigra infra medium ornatis: Subtus 
zreus, abdominis segmentis singulis maculis duabus albis 
notatis. 
Head bronzy-green, pubescent above the mouth, deeply fur- 
rowed on the vertex, punctate-striate transversely and flat in 
