103 
some peculiar crooked branchlets were observed, mostly rising from the sporangia- 
bearing branchlets, more rarely independently of these, and then usually given off 
from the lower end of the cells (fig. 33); in some cases they bear sporangia (fig. 33 A). 
Sometimes they occur in 
capitulum (fig. 33 B). These 
crooked filaments showed 
rich, coloured contents; 
they must without doubt 
be regarded as abnormal 
formations. 
Besides the monospor- 
angia tetrasporangia have 
also been met with, but 
only in one locality in the 
North Sea (aF, 31 meters) 
in August. The specimens 
bore numerous, typical 
monosporangia and in 
smaller number tetraspor- 
angia, having a similar 
position to the former. 
The number of tetraspor- 
angia on one hranchlet 
was frequently greater 
than usual, but that was 
also the fact for the mo- 
nosporangia in these spe- 
cimens. The tetrasporan- 
gia were almost globular, 
a little longer however 
than broad, 25—26 y long, 
21—22 y broad (fig. 32 D). 
In one branchlet only one 
sort of sporangia occurred, 
but branchlets with mono- 
sporangia were found at 
a little distance from those 
great number on a branchlet, forming a short-stalked 
se os AE 
me 
on 
co 
CT 
EE 
ARS 
1 
— 
Fer 
nr 
man) 
Fig. 32. 
Chantransia Thuretii /7, agama. A—C from ZL‘, %5:1, A from the lower, B 
from the upper part of the plant. C, branch with sporangia, partly 2 on each 
cell. D, from aF. 345:1, branchlet with tetrasporangia. The pyrenoids have 
been drawn in some of the cells. 
with tetrasporangia on the same plant. Some plants bore only monosporous 
sporangia. 
Some specimens growing on Flustra foliacea dredged in the Skagerak N.W. of 
Hirshals in May (no. 7109) may be mentioned here, as they are somewhat different 
in the smaller size of the sporangia and the more irregular position of the spor- 
