FIELD NOTES FROM MACEDONIA, 1918. I. 149 
while watching these efforts it was difficult not to believe that there 
existed some structural modification of the genitalia which prevented 
copulation, for as soon as an insect was given a mate of the same species 
copulation was instantaneously effected. Only one pairing between Z. 
filipendulae @ and Z. lonicerae 3 was obtained. It lasted a normal 
time and the female laid nearly 300 eggs, most of which were fertile. 
I had also a few hippocrepidis and trifolii, and obtained pairings 
between a hippocrepidis 2 x trifolii 3, hippocrepidis 2 x lonicerae 3, 
and lonicerae 2? x hippocrepidis g. The first two females laid eggs 
which were infertile. The last pairing only lasted five minutes, and 
no eges were laid. - 
The larvee of the first cross fed well and hibernated successfully, but 
owing to a heart-rending accident were all killed just before they began 
to feed up. A similar attempt was made in 1917, and three pairings 
were obtained between filipendulae and lonicerae, but none of the eggs 
were fertile. 
On the other hand no great difficulty was found in obtaining pair- 
ings between trifolii 2 and lonicerae § , which proved fertile. 
If any reader were to find five-spot and six-spot burnets in copula, 
he would be conferring the greatest favour if he would place the insects 
in a cardboard box lined with moist filter paper firmly sewn to the 
sides, and would send them to the author, at 8, Selwyn Gardens, Cam- 
bridge. The material is required for genetic research work. 
[Unfortunately the above did not reach us until after the July 
number was published, and hence the request is probably too late for 
the present season.—H.J.T.] 
Field Notes from Macedonia, 1918. I. 
By Caprain M. BURR, D.Sc., F.E.S., Htc. 
The following few observations are the continuation of a little series 
of “ Field Notes from Salonika,’ which appeared in the F/ntomologist’s 
Record during 1916. Unfortunately, the collection of Orthoptera made 
in that year was destroyed in the great fire that ravaged Salonika in 
August last year, together with a quantity of other things that I valued. 
In 1917, partly from lack of time, and partly from lack of energy, I 
looked for little, took less, and lost that. All I have to show for last 
year is the record of asecond, as yet unidentified, species of Acrometopa, 
which I found, together with A. macropoda, in one of the numerous 
gulches that split the hills on the right bank of the Struma valley ; 
this second species differs from A. macropoda in the decidedly bluish 
tinge of its colour, in the shorter elytra, which are rounded at the apex, 
and not obliquely truncate, and the wings do not project beyond them. 
It is not gratifying to have spent two anda half summers in so 
interesting and unworked a country as Macedonia, and to have little 
or nothing to show for it, so I have resolved for the rest of the present 
season to do as much collecting as time and circumstances permit. It 
is very desirable to make some observation on the habits of these 
creatures, and to make long series of the species which are abundant 
here, but unknown in other districts. 
By the second half of February it really seemed that spring had 
begun ; we had enjoyed some five or six weeks of fine sunny weather, 
broken by occasional sand storms, varied with blizzards. On February 
