Dor bishire . — On Actinococcus and Phyllophora. 255 
The following is an account of the anatomy and develop- 
ment of Actinococcus subcutaneus (Lyngb.) K. Rosenv., which 
forms the £ pseudo-nemathecium ’ of Phyll. Brodiaei (Turn.) 
J. Ag. 
Actinococcus subcutaneus (Lyngb.) K. Rosenv. 
Almost at every time of the year small, more or less 
spherical, dark reddish bodies are found on the flat ex- 
pansions forming the thallus of Phyll. Brodiaei . They are 
Fig. 1. Nemathecia of 
Actinococcus roseus (Lyngb.). 
Kold. Rosenv. on Phyllo- 
phora Brodiaei (Turn.) J. Ag. 
Nat. size. 
Fig. 2. Nemathecia of 
Actinococcus roseus (Lyngb.). 
Kold. Rosenv. on Phyllo- 
phora Brodiaei (Turn.) J. Ag. 
Nat. size. 
sessile on the young shoots at the apex of the thallus, 
but often appear to be stalked, this appearance being pro- 
duced by the shoots on which they grow (Figs. 1 and 2) 
being at first rather narrow. 
These red bodies are the nemathecia of Actinococcus sub - 
cutaneus (Lyngb.) Kolderup Rosenvinge, the Floridea 
mentioned above as growing parasitically on Phyll. Brodiaei. 
