96 HYMENOPTERA FROM SARAWAK. 
the base of the latter which has on the upper part, 7 keels (the 
lower 3 separated from the upper) and below are 3 more widely 
separated longitudinal keels. Front stoutly keeled down the 
centre and closely transversely striated. Pronotum transversely 
striated at the base; on its apex isa smooth narrow band. The 
projecting apex of the scutellum is prominent and ends in two 
rounded lobes. Metanotum coarsely irregularly reticulated; its 
sides near the base, project into a stout, sharply pointed tooth 
and there is a shorter one near the middle. On the apex of the 
basal third of the hinder femora is a short tooth somewhat 
triangular in shape, followed by an indistinct one at some dis- 
tance; following this, and separated by a less distance, is a 
sharper, lonzer; more distinct one, at about the same distance 
from this is a stouter one, immediately behind this a short blunt 
indistinct tubercle-like one, followed on the apex by 2 stout 
keels of which the hinder is somewhat the larger. Tegulee 
rufous. The head, thorax and legs are covered with a silvery pile. 
Closely allied to Megacolus is the following new Indian 
genus. 
Megachaleis, gen. nov. 
_ Antenne placed over the base of the clypeus, 11-jointed, 
the 2nd joint cup-shaped, the 3rd much longer and narrower 
than it. Scutellum large, roundly convex, its apex transverse. 
The sides of the metanotum project at the base above and 
have a stout tooth in the middle. The base of the mesoster- 
num has a stout tooth in the centre; the for ecoxe have a 
rounded leaf-like expansion on the apex above. Hind femora 
regularly toothed. Basal abdominal segment longer than all 
the others united; spiracles on the 3rd large; the last large, 
elongate and forming a sheath for the ovipositor, which is stout 
and twice the length of the abdomen. 
The occiput is margined, more sharply above than on the 
sides. Base of metanotum areolated. Five segments are on 
the abdomen as seen from the side, but only four from above. 
Sheaths of ovipositor stout, broad, pubescent and round on the 
apex. Hinder coxe nearly as long as the femora. Pronotum 
large, roundly produced in the middle at the base. 
Jour. Straits Branch 
