XVI, DINETUS. 95 
transverse striz on each side of it, and its superior surface and 
sides covered with a dense silvery pubescence, converging at the 
extremity, and enclosing the superficies of the metathorax at the 
apex; the wings slightly coloured, iridescent, the nervures 
piceous ; the legs black, with the apex of the anterior femorz 
and the exterior of all the tibiz yellow; the tarsi rufo-testaceous, 
the basal joints of the intermediate and posterior pairs somewhat 
darker ; the anterior tarsi strongly ciliated outside, and all the 
legs spinose. 
The abdomen with the three first segments rufescent, the 
second and third having on their posterior margins on each side 
a transverse ovate yellow spot, the three following segments 
black, with the margins of the fifth and sixth yellow. 
The ¢ differs in having the whole head yellow with the ex- 
ception of the vertex, and an angular space descending towards 
the antenne, and the occipital portion black ; the antenne black, 
with the first joint yellow, the remainder fulvous beneath; the 
collar entirely, and a point beneath the base of the wings, 
yellow, as well as all the tarsi and the anterior legs; the legs 
more spinose, the silvery pubescence denser, and the wings not 
quite so deeply coloured ; the abdomen yellow, with the margins 
of the segments testaceous, the fourth and base of the fifth 
black, a yellow spot on each side of the former; the venter 
piceous. 
é 9 in the Cabinets of the British Museum, 
Mr. Curtis, Mr. Stephens, and Mr. West- 
wood. 
+44 This insect used to occur at Windsor, where it was 
taken by the Messrs. Griesbach, since when it has not been 
found. I know no other English locality. 
Famizy VII. 
NYSSONIDZE. Leach. 
Mandibles not emarginate beneath. In the form of the 
abdomen and labrum they resemble the Larridz. 
