BREAKING OF THE MERES. 
115 
heaped it up around the reeds. There it covered the surface of the 
lake like a fine reddish scum, forming patches of colours varying 
from greenish black to a beautiful red. It was also seen of a 
yellow, a red, and grey of every shade ; some of them were 
marbled, and others presented figures much resembling those 
produced by positive electricity on the electrophorus. During the 
day this mass exhaled an infectious odour, but during the night all 
disappeared, to be renewed on the following day. When the lake 
was agitated by strong winds the phenomenon disappeared, but 
again presented itself on the re-establishment of a calm. 
M. C. Cooke. 
NEW BRITISH FUNGI. 
By M. C. Cooke. 
( Continued from jp. 52.) 
We gladly acknowledge the assistance of Professor Bayley 
Balfour, which has enabled us to record six additions to the 
Myxomycetes of Great Britain, three of which are new, and have 
been discovered by Professor Balfour during a critical examination 
of the specimens contained in the Herbarium of the late F. Currey, 
F.R.S. 
Agaricus (Entoloma) Persoonianus, Du Port. 
This species has again been found by the Rev. M. J. Berkeley. 
We find on reference that there already is a species of 
Agaricus named A. Persoonii , and therefore the name of Per- 
soonianus as given by Phillips and Plowright to this species will 
stand (see Grevillea , p. 66) as now corrected. 
Ovulazia syringse, Berk. 
Flocci for the most part decumbent, acrospores at first subglobose, 
with a terminal papilla, then elliptic, at length ovate, very large. 
Gard. Chron., Nov. 19, 1881, with fig. 135. 
On lilac leaves. Aberdeenshire. 
The length of the threads is *012 in., that of the acrospores ’002- 
•003 in. 
JEcidium barbazeae, DC. FI. Fr ., n., 241. 
On both sides. Spots rufescent. Peridia aggregated in large 
irregular clusters, large, cup-shaped, margin whitish, crenulate; 
spores orange. Duby. Bot. Gall., ii . , 905. 
On leaves of Barb area praecox. Near Plymouth (E. G. 
Yarenne). 
Sometimes the peridia occupy the whole surface of the leaf, which 
is distorted and curved inwards. 
Physarum granulatum, Balf. fil. 
Sporangium stipitate in. high, rising from a brownish-black 
hvpothallus ; stipe dilated at base, tawny or darker brown, or dirty 
grey, striate, about equalling the capsule; capsule globose slate-grey, 
dotted with large white granules, brittle, wall single, dirty white 
when separated, impregnated with small rounded granules of lime 
