240 CRABRONIDE. 
times at the base only); the clypeus yellow; the mandibles 
yellow, with their apex piceous. 
The thorax black, coarsely punctured, pubescent ; two abbre- 
viated parallel longitudinal lines at the base of the dorsolum in 
the centre; the triangle at the base of the metathorax nearly 
smooth, the centre having a longitudinal impressed line and the 
edges of the sides longitudinally striate, beyond which it is very 
coarsely punctured ; a spot on each side of the collar (generally 
wanting), the tegule, and a transverse line on the post-dorsolum 
(frequently wanting), all yellow; the wings slightly coloured, 
their anterior margin and apical edge more deeply so; the legs 
yellow, with the femora black, the anterior pair of which are 
yellow in front, their knees ferruginous, the intermediate pair 
yellow in front towards the knees, and the apical joints of the 
tarsi also ferruginous; the anterior tarsi strongly ciliated, and 
all the tibize very spinose. 
The abdomen black, coarsely punctured ; a yellow band at the 
base of the second segment, abbreviated at the sides, frequently 
emarginate behind, and frequently a minute dot on each side at 
the margin of this segment, a second generally occupying the 
whole of the third segment, frequently deeply emarginate in front, 
and a third entire on the fifth segment, very rarely emarginate 
in front, frequently an irregular mark on each side of the fourth 
segment, which extremely rarely forms an entire band ; generally 
a triangular spot or interrupted band on the third ventral seg- 
ment, and when the fourth is entirely yellow above, the ventral 
segment has also a yellow band; the space between the central 
longitudinal carinz of the anal segment, which are widest apart 
at their base, punctured and opaque ¢. 
The ¢ differs in having the mandibles generally black or with 
merely a yellow spot at their base, a yellow band on both the 
fifth and sixth segments, the former emarginate in front and 
sometimes reduced to merely a small mark on each side, that on 
the sixth always entire; the intermediate carinz of the anal 
segment more nearly parallel with the intermediate space, deeply 
