Notes on Malayan Mycetozoa. A. R. Sanderson. 245 
have appeared on the tapped surfaces of Hevea attacked by 
Sphaeronema fimbriatum (‘ Mouldy Rot of the Tapped Surface’). 
P. nucleatum Rex. This also is moderately frequent on palms 
in similar situations to P. auriscalpium; | have also found both 
species on torn wood-fibres of Jntsia Bakert and Shorea barbata 
about three weeks after the trees were felled. Unless one is 
fortunate enough to see it before or soon after the sporangia 
begin to dehisce most of the minute central balls of calcareous 
matter will have fallen out. 
P. reniforme Lister. This occurs on Hevea logs, and on a few 
occasions I have met with it 5 to 7 ft. high on the living stems. 
It has appeared twice on Hevea just below a diseased portion 
of the cortex where fluid was exuding from holes made by 
boring beetles (a species of Xyleborus) ; the colony of sporangia 
followed the line of the stream of fluid; once it appeared on the 
dead cortex of Hevea attacked by Ustulina zonata. 
Two forms of the species occur ; one with long-stalked hammer- 
headed sporangia, like the type from Ceylon, with rough spores, 
12-14 diameter; the other with smaller and less rough spores 
measuring 10-12, and with the sporangia in close clusters; the 
latter form is fairly frequent. 
P. pusillum Lister. One gathering only. 
P. virescens Ditm. One small colony from jungle, in Johore. 
P. lateritium Morgan. This species occurred continuously on 
soft-wood jungle logs during July, August and September 1920. 
The plasmodium was a dirty chocolate grey and persisted for 
some considerable time as very thick anastomosing veins. The 
young sporangia were brilliant yellow, rapidly darkening to a 
yellow-brown with age. 
Fuligo septica Gmelin. Although I have several times gathered 
this species both in Malaya and Ceylon it is apparently not very 
common there. On five occasions I have found it on jungle-logs 
and several times on Hevea logs, but the aethalia were always 
somewhat small, never exceeding 5 cm. across. The lime con- 
tents seemed greater than is usual with the English specimens 
I have examined. One large specimen Io cm. diameter was 
found on a Nibung palm (Oncosperma filamentosa) stump near 
Petaling. Very frequently the aethalia are reduced to a mere 
shell, the spores having been consumed by small beetles. 
F. cinerea Morgan. This species occurred frequently on 
stacked Hevea and jungle timber at Petaling during the early 
part of 1921. As with the preceding, small beetles frequently 
attack the spores. 
Evionema aureum Penz. Several times I have been fortunate 
enough to find this species. Once it occurred on a jungle log 
in an advanced stage of decay which had been exposed during 
