Fig. 348. BANGIA CILIAEIS. 
Colour. A rosy pink. 
Substance. Gelatinous ; but scarcely tangible ! 
Character of Frond. A scarcely perceptible fringe of delicately hair-like, jointed threads, 
{filaments), parasitic on other algae. Filaments slightly tufted, or growing close 
together ; straight ; compressed ; unbranched ; swollen here and there ; tubular ; 
containing rows of minute colour-cells, set as if radiating from the centre (a micro- 
scopic object). 
Measurement. From to ^ of an inch long. From 2 to 3 colour-cells in width ; these 
forming (with the intervals) a tesselated line across (see Figure). 
Fructification. As in the preceding ; only with two zoospores to each cell. 
Habitat. Appin. Filey, &c. On Zostera marina, and various small algae near low-water 
mark. Not uncommon. 
Fig. 349. BANGIA CERAMICOLA. 
Colour. A purplish rose colour. 
Substance. Gelatinous ; soft. 
Character of Frond. A delicate fringe of fine, hair-like, jointed threads {filaments) parasitic 
on other algae. Filaments tufted or growing close together ; unbranched ; their 
joints once or twice as long as broad ; slightly contracted at the partition-lines 
{dissepiments) ; marked with several slender, upright lines (internal colour-cells 
showing through), which at maturity run together (a microscopic object). 
Measurement. About an inch long. 
Fructification. Minute seeds {zoospores) formed of the line-like colour-cells in the joints ; 
which cells then run together, and at last form a globular mass, that bursts through 
the cell-wall, leaving the cell empty. 
Habitat. Appin. Largs, &c. On the smaller algse in tide-pools. 
Unlike other Bangias in structure. Moreover, much longer than B. ciliaris. 
Fig. 350. BANGIA ELEGANS. 
Colour. Rosy pink. 
Substance. Soft, but scarcely tangible. 
Character of Frond. A delicate fringe of fine, hair-like, jointed threads {filaments) parasitic 
on other algae. Filaments tufted, or growing close together ; repeatedly forked ; 
the angles of branching (axils) rounded and very wide ; tubular ; containing narrow, 
cylindrical colour-cells, which at maturity run together (a microscopic object). 
Measurement. From to \ of an inch long. 
Fructification. Minute seeds {zoospores) formed of the colour-cells in the filaments; which 
cells then run together into diamond-shaped masses, and at last drop out. 
Habitat. Strangford Lough. Parasitic on the smaller algae. Very rare. 
This plant also differs entirely in structure from true Bangias, and will probably one day 
be removed to a separate genus. 
143 
