90 LARRID2. 
wings slightly fuscous, the nervures piceous ; legs black, the 
anterior tarsi strongly ciliated on the outside, and the four pos- 
terior ones with all the joints spinose at their extremities, and 
the two or three exterior joints rufo-piceous, the anterior pair 
of the calcaria rufous, and the intermediate and posterior black. 
The abdomen having the posterior margin of the segments 
depressed, and slightly covered with a silvery pubescence, 
chiefly towards the sides, the two first segments and the base 
of the third rufous, the latter sometimes entirely red ¢. 
The ¢ does not differ, with the exception of the metallic pu- 
bescence being denser, and that but very seldom more than the 
two first segments of the abdomen are rufous, and the legs less 
spinose. 
+17 Abundant upon Hampstead Heath. Found at South- 
end, and in North Wales, by the Rev. F. W. Hope; at 
Black Gang Chine, Isle of Wight, and at Barmouth, by 
Mr. Walker; in the New Forest, and near Yarm, in York- 
shire, by the Rev. G. T. Rudd. I have frequently caught 
it with a small sandy-coloured caterpillar. 
Sp. 2. unicotor. Panz. 
ater, immaculatus, abdominis segmentorum marginibus lucidis. 
length 3—4} lines. 
Larra unicolor, Panz. 106. 16. 
Var. Tachytes pompiliformis. V.d. Lind. pt. 2.22. B. 
Atrous: head rather coarsely punctured ; a deep longitudinal 
furrow extending from the base of the antenne to the anterior 
stemma, and passing beyond it to the centre of the vertex ; 
the lower portion of the face, in front, covered by a sericeous 
pubescence. 
The thorax loosely punctured ; the metathorax longitudinally 
striated at its base, which becomes reticulated or subrugose to- 
wards the verge of the truncation, where the striz are trans- 
