The Freshioater Algae of Africa. 



503 



in the specimens figured by Naegeli. The cells generally exhibited a 

 quite irregular arrangement. All the larger colonies had a mucilage- 

 envelope, showing a denser peripheral layer of some thickness 

 (Fig. 5). 



Fig. 5. — Apiocystis brauniana, Naegeli. x 750. 



Genus SCHIZOCHLAMTS A. Braun. 



1. Schizochlamys hyalina, n. sp. (Fig. 6.) 



Stratum molle, gelatinosum, subhyaliuum, amplitudine plurium 

 mm. cellulas parvas etmultas intervallis variabilibus dispositas inclu- 

 dens. Cellulae ante divisionem sphaericae, post divisionem plerumque 

 ovales, diam. 6-9 /x, sine pyrenoidibus, cum membrana tenui distincta, 

 quae secretione muci in imam vel plures partes rumpitur. Segmenta 

 membranae in muco circumposito diu manent, coetus cellularum inter- 

 dum pluribus segmentis ejusmodi circumdati sunt, 



