CDOGONIACES. 171 
globose, rufous-brown when mature, loosely involved in the 
oogonium. 
Size. Cells ‘02-025 mm. 14-3 times as long; oogonia 
05 x -04mm.; oospore -03-:032 mm. 
Kutz. Tab. iii, t.39, £6. Rabh. Alg. Eur. iii, 353. 
Deeside (Scotland). 
Plate LXVI. fig. 8. Cidogonium capillaceum, with oogonia x 400, 
Gdogonium Hutchinsiz. Wittr. Mon. Bdog. p. 42. 
Oogonia single, rather depressedly to somewhat egg-shaped 
globose, opening by a pore above the middle; oospores filling 
the oogonium, epispore punctate with little warts ; supporting 
cells swollen. 
Sizz. Cells -03--035 mm., 4-6 times as long; oogonia 
*062-:075 x *065--095 mm.; oospores ‘06-073 x °*055--072 
mm.; supporting cells ‘04-05 mm. 2-4 times as long. 
Treland. 
The figure is taken from original specimens from Miss Hutchins in the 
Royal Herbarium at Kew. 
Plate LXV. fig. 1. Gidogonium Hutchinsie, with oogonia x 400. 
Cdogonium princeps. (Hass). Witir. Mon. Gdog. p. 42. 
Oogonia single, somewhat egg-shaped globose, opening with 
a pore above the middle; oospores globose, not distinctly filling 
the oogonium. 
Sizz. Cells ‘037-045 mm. 14-2} times as long ; oogonia 
‘061-075 x ‘068-08 mm. ; oospore :058-066 x -06-:065 
mm. 
Vesiculifera princeps Hass. F. W. Alg. 195. 
Vesiculifera capillaris Hass. F. W. Alg. 195, t. 50, f. 1-2. 
England. 
Plate LXV. fig.2. Cdogoniwm princeps, with oogonia and (a) spermo. 
gonia (?) x 400. 
6. Oospores subelliptic or oval. 
Gdogonium longatum, Kutz. Sp. Alg. p. 364, 
Oogonia single (often solitary, terminal), rarely 2-3 con- 
tinuous, ellipsoid, opening by an operculum, with a narrow 
fissure ; oospores globosely-ellipsoid, scarcely filling the 
oogonium ; terminal cell obtuse. 
Sizz. Cells 005-006 mm. 2-3 times as long; oogonia 
016-017 K :021--024 mm. ; oospores ‘015-'016 x 0175-0185 
mm. 
2B 
