XIX. OXYBELUS. 109 
The thorax slightly covered with a silvery pubescence; the 
dorsolum with a central carina, which traverses it longitudinally 
and crosses the centre of the scutellum and post-dorsolum, 
terminating at the base of the metathoracic mucro; the tubercles 
yellow, and the incurved squame at the posterior angles of the 
post-dorsolum yellow at their base, their apex pale; the tegule 
testaceous, with a yellow spot; the central mucro acute and 
canaliculated above; the wings very slightly coloured, their 
nervures testaceous ; the legs with the base of the anterior and 
intermediate, and the whole of the posterior femore, black ; the 
apex of the anterior and intermediate femore, and all the tibiz, 
yellow, with the exception of the interior of the intermediate 
pair at their apex, and that portion of the posterior pair, piceous; 
the tarsi ferruginous, with their first joint at its base yellow. 
The abdomen punctured, shining, and covered with a slight 
silvery pubescence, the first segment with an ovate spot, and the 
three following with a transverse line on each side yellow, the 
margins of the segments depressed ¢. 
I am unacquainted with the @. 
$ in my own Collection. 
++ This appears to be a rare species; it was taken some- 
where in the neighbourhood of London. 
Sp. 3. NiIGRIPES. Oliv. 
niger, squamisque etiam nigris, mucrone obtuso incurvo, abdominis 
segmento primo punctis duobus flavis. 
length 33 lines. 
Oliv. Ency. Meth, 8, 596, 12. 
Black: head punctured ; antenne with their apex piceous. 
Thorax punctured, with the posterior part of the dorsolum 
having a central longitudinal carina which crosses the scutellum 
and post-dorsolum and terminates at the mucro at the base of 
the metathorax, which is curved, very obtuse, canaliculated 
