LISTER ! THE STUDY OF MYCETOZOA IN BRITAIN. 
2 37 
T. Botvytis Pers. 
(1) 
X 
( 2 ) 
X 
(3) 
X 
( 4 ) 
X 
,, var. lateritia List. 
— 
— 
X 
— 
,, var. munda Lister 
X 
X 
X 
X 
„ var. flavicoma Lister .. 
X 
X 
X 
c 
,, var. cerifera G. Lister 
X 
X 
X 
— 
Hemitrichia Vesparium (Batsch) Macbr. 
X 
X 
X 
—• 
H. intorta Lister 
-- 
X 
— 
— 
H. leiotricha Lister 
X 
X 
X 
c 
H. clavata (Pers.) Rost. 
— 
X 
X 
— 
H. Karstenii Rost. 
— 
X 
X 
c 
H. abietina (Wig.) Lister 
— 
— 
X 
— 
H. minor G. Lister 
-- 
— 
H 
c 
H. chrysospora Lister . . 
— 
— 
X 
—■ 
Arcyria ferruginea Saut. 
X 
X 
X 
c 
,, var. Heterotrichia Lister 
X 
— 
— 
— 
A. cinerea (Bull.) Pers. .. 
X 
X 
X 
X 
,, var. carnea Lister 
X 
X 
— 
— 
A . pomiformis (Leers) Rost. . . 
X 
X 
X 
c 
A. denudata (L.) Sheldon 
X 
X 
X 
X 
A. incarnata Pers. 
X 
X 
X 
X 
,, var. fulgens Lister . . 
X 
X 
— 
— 
A. insignis Kalchbr. & Cooke 
— 
X 
—■ 
—• 
A. nutans (Bull.) Grev. 
X 
X 
X 
X 
A. Oerstedtii Rost. .... 
X 
X 
X 
— 
Lachnobolus congestus (Somm.) Lister 
X 
X 
— 
X 
Perichaena chrysosperma (Currey) Lister 
— 
X 
X 
c 
P. depressa Libert 
X 
X 
X 
— 
P. corticalis (Batsch) Fries 
X 
X 
X 
c 
P. vermicularis (Schw.) Rost. . . 
— 
X 
X 
c 
Margarita metallica (Berk. & Br.) Lister 
X 
X 
X 
c 
Dianema Harveyi Rex . . 
— 
X 
X 
c 
D. depressum Lister 
— 
X 
X 
X 
D. corticatum Lister 
— 
— 
—■ 
c 
Prototrichia metallica (Berk.) Massee 
— 
X 
X 
c 
Hymenobolus parasiticus Zukal 
— 
— 
—- 
c 
Eider Duck on the River Roding, in Essex. —Mr. 
Colin Murray, writing in British Birds for March 1918, says 
On 21 February 1917, I saw a flock of seven Eider Ducks 
(Somateria m. mollissima) on the River Roding, and on 10 
March 1917, saw ten at the same place. The stretch of river 
on which I saw the birds is only a few hundred yards from 
the Thames. It is now over forty years since I began to shoot 
on the banks of the Thames (chiefly in Essex), and I am well 
aware that the appearance of this species on fresh water is 
quite exceptional, but I am quite confident that my identifica¬ 
tion is correct. When last seen, they were on the wing, flying 
south-east. 
