170 NEMATOPHYCE.E. 



SIZE. Cells -009--011 mm., 4-8 times as long ; oogonia 

 025 mm. diam ; oospore ! 016- - 018 mm. 

 Rabh. Alg. Eur. iii., 355. 



Dceside (Scotland). 



Plate L~X.VI.fig. 6. (Edogonium tenellwn, with oogonia x 400. 

 (Edogonium hexagonum. Kutz. Tab. iu.,t. 35, /. 3. 



Oogonia almost globose ; oospores globose, rufous-brown, not 

 filling the oogonia ; basal cell bifurcate ; terminal cell often 

 setigerous. 



SIZE. Cells 'Oll-'OlS mm. 2-4 times as long ; oogonia 

 025 x '025 mm.; oospore -016 mm. 



Rabh. Alg. Eur. iii. 354. 



Vesiculifera hexagona Hassall Algee t. 53, f. 11-12. 



Deeside (Scotland). 



Plate LXV1. Jig. 8. (Edogonium hexagonum, with oogonia x 400. 

 (Edogonium. Londinense. Wittr. Mon. Mdog. p. 39. 



Monoecious? oogonia twin or single, globose, cut round (cir- 

 cumscissile) in the middle, opening by a pore seated in the 

 fissure ; oospores globose, almost filling the oogonia ; spermo- 

 gonia (or androsporangia ?) 1-2 celled, hypogynous. 



SIZE. Cells '01-*015 mm. 1^ to 5 times as long ; oogonia 

 033--035 x '033--043 mm. ; oospore -027--032 x -027-'032 

 mm. ; sperm, cells '026--027 X -027--029 mm. 



England. 



Plate LXV. fig. 4. (Edogonium Londinense with oogonia x 400. 

 (Edogonium fasciatum. Kutz. Tab. in., t. 34, /. 6. 



Oogonia somewhat globose ; oospores globose, rufous-brown, 

 almost filling the oogonia ; basal cell usually bilobate, terminal 

 cell obtuse. 



SIZE. Cells '028-'03 mm., twice as long ; oogonia '04 mm. ; 

 oospore '03- - 032 mm. 



DeBary CEdog. t. 3, f. 23-28. Rabh. Alg. Eur. iii., 354. 



Vesiculifera fasciata Hassall Algas t. 53, f. 6. 



Deeside (Scotland). 



Plate L XVI. fig. 2. (Edogonium fasciatum, with oogonia x *400. 

 (Edogonium capillaceum. Kutz. Phy. Gen. 255. 



Dark green, basal cell attenuated downwards, bifid, terminal 

 point obtuse, cells sub-cylindrical ; oogonia broadly elliptical, 

 2-4 often contiguous, opening by a lateral pore ; oospore nearly 



