40 
In the interior of the flabellum the filaments are cylindric or 
sometimes a little subtorulose, seldom even moniliform (Fig. 8 a-d); 
above the dichotomy, which is not so very typical, as one of the 
branches is most often somewhat thinner and placed to the side, 
just as sometimes filaments divided into three branches (Fig. 8 e) 
Fig. 7. Cladocephalus luteofuscus (Crouan) Börgs. 1/1. 
occur, the filaments are less or not at all constricted; the thick- 
ness of these filaments varies from 60—70 w or a little to- 
wards one of these. At the surface the filaments divide several 
times and grow here, rather suddenly, quite thin viz. 6—8 in 
diameter (Fig. 8 f, g). These thin, torulose, irregularly branched 
