Fig. 348. BANGIA CILIARIS. 



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 microscopic object). 



Measurement. From j-^ 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. 



FCabitat. Aj^pin. Filey, &c. On Zoster a marina^ and various small alga3 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 algse. 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. 



Fructifiication. 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. 



Kahitat. Appin. Largs, &c. On the smaller algie in tide-pools. 



Unlike other Banglas in structure. Moreover, much longer than J3. ciliaris. 



Fig. 350. BANGIA ELEGANS. 



Colour. Kosy pink. 



Substance. Soft, but scarcely tangible. 



Character of Frond. A delicate fringe of fine, hair- like, jointed threads (f laments) 

 parasitic on other algse. 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 -J- 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 algse. Very rare. 



This plant also difiers entirely in structure from true Bangias, and will 

 probably one day be removed to a separate genus. 



74 



