148 CRABRONIDS, 
has three obsolete parallel carinz; the metathorax with a 
longitudinal central incisure expanding just beyond the middle 
into a fossulet, and above which a transverse one divides it, 
curving upwards, and enclosing the anterior portion in a semi- 
circle, which is smooth and shining, sometimes very slightly 
obliquely striated at its exterior edge, and joining that which 
separates the post-dorsolum from the metathorax, the whole 
consute ; the posterior portion of the metathorax distinctly en- 
closed by lateral ridges, shining, anteriorly punctured, and be- 
hind tranversely striate, or the whole entirely so; the collar and 
post-dorsolum with a transverse yellow line, the former generally 
interrupted, the latter sometimes wanting; the tegulee testaceous; 
the wings slightly coloured, their nervures piceous; the legs 
black, with the apex of the coxe and base of the trochanters 
fuscous; the anterior and intermediate tibiae, in front, and the 
posterior ones with a ring at their base, yellow; the anterior 
and intermediate tarsi yellow at their base, rufo-piceous at their 
apex, the posterior pair entirely piceous; the anterior tarsi 
slightly ciliated outside; and the intermediate and posterior 
tibiz spinose. 
The abdomen black, elongato-ovate, with five yellow bands; 
the second, third, fourth, and fifth, very wide; the four first 
generally interrupted; the fourth sometimes merely emarginate 
in front; the fifth almost always entire; the first and third some- 
times reduced to a mere spot on each side; the second and third 
generally the least interrupted; the anal segment with generally 
a yellow spot on each side, and a central one beneath 9. 
The ¢ has its antennz simple, and the clavolet fringed below, 
and differs from the 9 in the scape having sometimes a lateral 
yellow line; the interior orbits of the eyes and clypeus covered 
with a loose silvery pubescence, the latter tridentate in front, 
and frequently a yellow spot on each side of its base behind ; 
the yellow markings on the collar and post-dorsolum generally 
wanting ; their anterior and intermediate femora fuscous in front, 
the latter also behind; the abdomen elongate, the first segment 
