Mycetozoa found during Minehead Foray. G. Lister 11 
indoors it soon developed into the characteristic small compact 
aethalia. A fresh growth of shining black sporangia of Hemz- 
trichia Vesparium was obtained on the same dead tree where 
it had been found more or less abundantly for the last four 
years. Hemitrichia clavata has occurred also on this tree, but 
was not in evidence on the present occasion. 
On Wednesday, September 29th, the party drove to Sel- 
worthy. Here extensive woods of oak, holm oak, and ash, with 
some conifers, clothe the south side of the coast hills; in many 
parts there is undergrowth of Rhododendron and bramble. 
Large developments of Physarum bitectum were found within 
bramble thickets, together with a curious form of Diderma 
effusum with small depressed pale brown and much wrinkled 
sporangia. Dictydium cancellatum and Licea flexuosa were ob- 
tained on coniferous wood. 
Thursday, September 30th, when the fine woods above 
Porlock were visited, was wet. The trees consisted of oak, ash, 
holly, walnut, and some Scots pine and larch; with under-. 
growth of fern, grass and, on higher ground, heather. On the 
surface of a large sawdust heap a quantity of the white plas- 
modium of Arcyria denudata was emerging. A handsome growth 
of Trichia Botrytis forma cerifera was found on a log half sub- 
merged in water. When still moist, the black sporangia were 
seen to be distinctly mottled with translucent yellow patches, 
so that at a glance it was referred to this variety. When dry, 
however, only about half a dozen sporangia exhibit the bright 
yellow warts of wax characteristic of the variety; the remaining 
sporangia are either purple-black veined with glossy red-brown 
lines of dehiscence, or opaque purple-black mottled with glossy 
yellowish areas, due probably to thin deposits of wax. An 
interesting feature of these black sporangia is that their dark 
colour is in part caused by dense deposits of dark plasmodic 
granules each about I » diam., lying between the two layers of 
the sporangium-wall; such granules have been usually con- 
sidered to occur only in sporangia of the Order Heterodermaceae, 
including the genera Cribraria, Dictydium and Lindbladia; they 
have not been seen in the brown or rosy forms of Trichia Botrytis, 
nor are they present in black sporangia of Tvichia floriformis. 
On Friday, October Ist, the grounds of Dunster Castle were 
visited. In a wood-yard Perichaena depressa, found on elm logs, 
proved to be a new record for Somerset; the beds of old sawdust 
were teeming with plasmodium of Fuligo septica. 
Saturday, October 3rd. Some of our party again went to the 
Horner Woods and Porlock, where among other species Stemo- 
nitis splendens var. flaccida and a single sporangium of Collo- 
derma oculatum were found. 
