140 
some specimens bore exclusively monosporangia; the tetrasporangia occurred only 
in small quantity. 
As in the main species short descending filaments occurred at the base of the 
Fig. 66. 
Chantransia pectinata 3, cimbrica. A, lower part of erect filament. B, upper part of the same with sporangia; 
one of these showing a transverse wall. C, branched filament with tetrasporangia. D, filament with branch- 
lets bearing monosporangia. E—G, cells showing the chromatophores. A, B 260:1. C, D 340:1. E—G 550:1. 
erect filaments (fig.66 A). The branches taper upwards, at last 5,5 x thick. There 
is more than one chromatophore, parietal, long and narrow, sometimes spiral- 
shaped but more frequently rather irregular. 
