170 CRABRONID2. 
nervures piceous ; the legs yellow, with the femora, the anterior 
and intermediate tibiae beneath, and the posterior ones at their 
apex, black; the terminal joint of the tarsi piceous ; the an- 
terior pair slightly ciliated, and the posterior tibize spinose. 
The abdomen black, shining, subpubescent, with the margins 
of the segments and the apex of the last one piceous ¢. 
The ¢ I am unacquainted with. 
@ in the Cabinet of Mr. Stephens. 
+4-+ This conspicuous insect, of which I know but the 
unique specimen in Mr. Stephens’s collection, and which 
he took at Ripley in Surrey, may, perhaps, be the ¢ of the 
Crossocerus bimaculatus of St. Fargeau. 
Sp. 29. Watrkerr. N. Sp. 
niger, orbitis internis oculorum mandibulisque flavis, metathorace 
levi, abdomine ovato-conico ¢. 
length 3 lines. 
Head black, somewhat shining, loosely punctured ; the stem- 
mata placed in a triangle in the centre of the vertex, with a deli- 
cate, longitudinal, impressed line between the posterior ones ex- 
tending considerably beyond them behind, and another deeper, in 
front of the anterior one, reaching the face; the antennz black, 
their scape yellow, with a black stain behind; the face slightly 
canaliculated, smooth, and shining, with a yellow line on each 
side of the inner orbits of the eyes, which is loosely covered with 
a silvery pubescence, as well as the lower portion of the cheeks; 
the clypeus slightly convex, yellow, very much produced in the 
centre in front, and more densely covered with the silvery down; 
the mandibles yellow on the outside, piceous within, their apex 
rufescent ; the palpi pale testaceous. 
The thorax black, shining, loosely punctured ; the metathorax 
with a cordate space at its base smooth and shining, the sides of 
which in front have some delicate curved striz, and it has a 
