230 CRABRONIDA. 
The ¢ differs in having the antenne longer, the pubescence 
of the face denser; less colour beneath the antenne ; and the 
tarsi a little more ferruginous ; the first segment of the abdomen 
black, excepting the sides ; and the hypopygium produced into 
an acute upcurved spine. 
¢ ¢ in my own Collection. 
{4+ Apparently solitary in its habits, taken occasionally 
at Hampstead. Under this species it is evident that the 
majority of former writers have mixed two. 
Sp. 2. pBicotor. Jurine. 
ater, abdominis segmentis tribus anticis rufis, petiolo lineari, 
supra longitudinaliter carinato. 
length 23—42 lines. 
Psen bicolor. Jurine, pl. 13. 
Head black, punctured, pubescent; the face covered with a 
silvery down; the antennz black, fulvous beneath, commencing 
about the third joint, and increasing in intensity to the apex; 
the anterior margin of the clypeus slightly reflexed. 
Thorax black, punctured ; the metathorax rugose, with an 
enclosed triangle at its base, the base of which is longitudinally 
striated; the tegule testaceous ; the wings iridescent, their ner- 
vures black; the legs black; the anterior tibiz ferruginous in 
front, as well as the knees and apex of the tibiz of the inter- 
mediate and posterior pairs, which on the exterior are spinose ; 
the anterior and intermediate tarsi ferruginous, and the posterior 
piceous, the anterior pair slightly ciliated. 
The abdomen with the petiole linear, longitudinally carinated 
above, and of the length of the remainder of the segment, 
black, as well as a very small space at the base of the first 
segment, the remainder of which, as well as the second and 
major part of the third, red, the rest black, the hypopygium 
slightly produced ¢. 
The ¢ does not differ except in having more silvery pubes- 
