ROSS : MYCETOZOA IN THE CHINGFORD DISTRICT. 
193 
3 he list of species found by me in August and September 1915 is :— 
Badhamia utricularis Berk. (August and September). 
Physarum viride Pers. (August). 
P. nutans Pers. (August and September). 
ditto, subspecies leucophaeum Lister (Aug. and Sept.). 
P. vernum Somm. var. iridescens (Aug. and Sept.). 
Euligo septica Gmelin (Aug. and Sept.). 
Craterium minutum Fries. (Aug. and Sept.) 
C. leucocephalum Ditm. (Aug. and Sept.). 
C. aureum Rost. (Aug.) 
Leocarpus jragilis Rost. (Aug. and Sept.). 
Diderma ftoriforme Pers. (Sept.) 
Colloderma oculatum G. Lister (Aug. and Sept.). 
Didymium clavus Rost. (Aug. and Sept.). 
D. melanospermum Macbr. (Sept.). 
D. nigripes Fries. (Aug. and Sept.). 
D. squamulosum Fries. (Aug. and Sept.). 
Stemonitis fusca Roth. (Aug. and Sept.). 
S. herbatica Peck. (August and Sept.). 
S. fiavogenita Jahn (Aug. and Sept.). 
Comatricha nigra Schroeter (Aug. and Sept.). 
C. pulchella Rost. (Sept.). 
C. typlioides Rost. (Aug. and Sept.). 
Enertlienema papillatum Rost. (Aug.). 
Lamproderma scintillans Morgan (Aug. and Sept.). 
Dictydiaethalium plumbeum Rost. (Sept.). 
Reticularia lycoperdon Bull. (Aug. and Sept.). 
Lycogala epidendrum Fries. (Aug. and Sept.). 
Trichia affnis de Bary (Aug.). 
T. decipiens Macbr. (Aug. and Sept.). 
T. botrytis Pers. (Aug.). 
Arcyria cinerea Pers. (Aug. and Sept.). 
A. pomiformis Rost. (Aug. and Sept.). 
A. denudata Sheldon (Aug. and Sept.). 
A. incarnata Pers. (Aug. and Sept.). 
A. nutans Grev. (Aug. and Sept.) 
The summer rains of 1916 were not so penetrating as those of tlie 
year before, and mycetozoa were less frequently found. The number 
of species recorded for August and September 1916 was 26 ; four species 
occurred which are not included in the abeve list :—namely r Ceratiomyxa 
fruticulosa Macbr., Cribraria aurantiaca Schrad., T richia varia Pers., 
and Arcyria (Erstedtii »Rost. The genus Arcyria was uncommon, A. 
nutans being seldom found, but the discovery of A . (Erstedtii (the first 
record for Essex) was a compensation for the poor appearance of the 
genus. Cribraria aurantiaca, a species usually found on pine logs and 
stumps, turned up on oak. 
