A NEW SPECIES OF THE MYCETOZOA. 163
ten of these Hoopoes migrated in a more or less southerly
direction, but two flew along a westerly route, south of west ;
one was ringed in Neumark, Germany, and recovered in the
Pas de Calais, France, and the other was ringed near Mainz,
Germany, and recovered at Noe-lez-Mallets, France.
During the course of my search, I have found the following
instances of breeding, but it must be mentioned that all do not
fall within the stated period of the investigation : in Sussex
on seven occasions, in Hampshire on five occasions, in Surrey
and Wiltshire on two occasions each, and in the following
counties once each : Devon, Cornwall, Monmouthshire, Buck-
inghamshire, Lincolnshire and Somersetshire.
I have only dealt here with the broader details of this investi-
gation, but I have published in The Ibis, 1942, pp. 390-434, a
paper with twelve tables and five graphs, wherein the subject
is dealt with more fully.
A NEW SPECIES OF THE MYCETOZOA, Didymium
laxifila G. LISTER AND ROSS.
By GULIELMA LISTER, F.L.S.
DURING the past few years an interesting form of
Didymium has been found repeatedly in Epping Forest,
near the Warren, Loughton. It occurs rather deep down in
heaps of dead bramble, beech and other leaves. While it is
allied to the common and variable species Didymium squamulosum
(A. & S.) Fries., it differs constantly in several definite characters.
The deeply umbilicate sporangia are snow white from an abun-
dant coating of stellate lime crystals ; they are scattered or
confluent in small groups and are mounted on short slender
red or reddish yellow translucent stalks ; the colourless or pale
yellow columellae are hemispherical and enclose lime crystals ;
the capillitium forms a lax network of stout nearly simple or
branched and anastomosing colourless or purplish-brown threads;
the spores are dark brownish-purple and are minutely warted
over the greater part of their surface, paler and smooth on the
side where dehiscence would take place, 9 to 11u diameter ;
the colour of the plasmodium appears to be pale green.
This form was first collected by Mr. Joseph Ross in February,
1935, and he has found it repeatedly and often in some abun-
dance in various places in the same neighbourhood in the
autumn of 1943, and in the winter, summer and autumn of