Fig. 
Fig. 
Fig. 
Fig. 
Fig. 
Fig. 
Fig. 
Fig. 
Fig. 
Fig. 
Fig. 
Fig. 
Fig. 
Fig. 
Fig. 
Fig. 
26. 
Sua 
B2- 
33: 
34- 
35: 
36. 
37: 
38. 
39. 
40. 
ae 
= 42: 
= 43. 
a4 
145 
PLATE XII. 
Part of a plant of Ascocyclus saccharinae from the frond of 
Laminaria saccharvina with ascocysts, depleted plurilocular 
sporangia and assimilatory filaments. ™ 1500. 
Unilocular sporangia and assimilatory filament of Myrionema 
saxicola.  X 460. 
A section through the thallus of Chylocladia kaliformis, 
shewing a plant of Stveblonema Zanardinii creeping on 
the sutiace, xX 240: 
Part of the vegetative thallus of Myrionema savicola scraped 
from a rock surface. X 240. 
Part of a plant of Ectocarpus ovatus var. avachnoideus with 
unilocular and plurilocular sporangia. x 240. 
Ascocyclus sacchavinae with assimilatory filaments and 
plurilocular sporangium. X 1500. 
A filament of Stveblonema Zanardinii shewing plurilocular 
sporangia and mucilage hairs, from the tissue of Chylocladia 
kaliformis.  X 460. 
PeAre. Xone 
Plurilocular sporangia of Ectocarpus parasiticus from the 
surface of Cystoclonium purpureum. xX 460. 
Surface view of sterile plant of Acrochaetium endozoicum in 
Alcyonidium hirsutum. xX 400. 
Basal part of Lepitonema fasciculatum with unilocular sporangia. 
XxX 400. 
Distal part of filament of Leptonema fasciculatum with 
plurilocular sporangia. x 400. 
Filament of Ectocarpus parasiticus creeping in the tissue of 
Cystoclomium purpureum. X 240. 
Transverse section of the thallus of Stictyosiphon tortilis, 
shewing superficial cells transformed into plurilocular 
sporangia. x 240. 
Vegetative filament of Leptonema fasciculatum. x 400. 
Acrochaetium endozoicum within the body of Alcyonidium 
hirsutum. Emergent filaments producing monospores. 
X 400. 
PLATE XIV. 
Single cell from a filament of Uvospora collabens shewing 
typical globular form. X 460. 
Cell with zoospores from a filament of Uvospora isogona. 
xX 400. 
Filament cell with accompanying “ gland ”’ cell of Tvailliella 
intvicata. xX 460. 
Filaments of Tvailliella intricata shewing method of branching 
and interpolated “‘ gland’ cells. x 8o. 
