{May, 
is duller, and the lateral lamelle of the hypopygium are broader 
and obtuse, instead of acute; wnivittata, from middle and northern 
Europe, is smaller, the thoracic line is twice as broad, the occiput 
is nearly all black, instead of only slightly so, the prothoracic 
stigma is pale, the lateral lamelle of the hypopygium are smaller, 
more acute, and black at the tip, and the upper lamella is blacker, 
more pilose, and bears on each side a small black, hairy process: 
leta has long black hairs on the under-side of the tibiw, &e. 
I have captured stercorea at Rannoch and Aberlady, and imagine 
it must be found in many places, from the frequency with which it 
occurs in collections. 
2. Punctata, which is found all over Europe, has the dise of the thorax 
obscurely greyish, with three somewhat indistinct black lines, the 
Jront and the occiput nearly all blackish, the pleurz just above the 
posterior cox with grey spots, the lateral lamelle of the hypo- 
pygium long, acute, black at the tip and fringed with black hairs, 
the upper lamella with its upper margin black, and each angle 
produced into a black lobe: semicinerea, from the mountain regions 
of Germany, has the thorax still blacker, the sides even being 
grey, the lateral lamelle of the hypopygium obtuse, the upper one 
simple, with its upper margin brownish: ¢estacea, from Austria, 
is larger, with the abdomen and hypopygium all yellow, besides other 
differences: c@qualis, from Germany, is smaller, and has yellow 
lines on the thorax, and a pale-haired differently shaped hypo- 
pygium : dilineata, from middle and northern Eurcpe, also has a 
pale-haired differently shaped hypopygium, and has remarkably 
few and short bristly hairs on the thorax; both equals and bili- 
neata have only a moderate-sized black spot on the occiput, and 
have scarcely any black line on the sides of the abdomen : 
bilineata has also yellow lines on the thorax and a differently 
shaped hypopygium. 
I have found punctata in abundance near Darenth Wood and at 
Rannoch, and therefore suppose it to be distributed all over Britain. 
3. Lrigramma, from middle and northern Europe, is allied to punctata, 
but has narrow yellow lines on the thorax between the black lines, 
the lateral lame!le of the hypopygium rather acute, the upper one 
simple, large ; the whole of the hypopygium being bent back over 
the abdomen more than usual ; the penis is exceedingly long. 
