—1 
Phyllophora Brodiæi and Actinococcus subcutaneus. 
grow out into flat leaves on the borders of which the 
cystocarps arise, much as in Ph. membranifolia. If this 
were correct, the origin of the carpophores would be very 
different from that in Ph. membranifolia where the carpo- 
phores arise on the border of the older segments of the 
frond and the procarps arise in their interior some time 
after their formation. 
As I have never seen specimens of Ph. Brodici with 
cystocarps in the Danish waters, and such specimens have 
not been mentioned by other authors, it was of inter- 
est to me to see the specimens on which DARBISHIRE has 
founded his statement of the presence of lateral carpo- 
phores and cystocarps in this species. Through the kind 
assistance of Dr. Curr Horrmann I have been able to 
examine the cystocarp-bearing specimens collected by 
Kuckuck at Kiel in 1891, referred to Ph. Brodiwi and men- 
tioned by DARBISHIRE (l.c. p. 32); they turned out to be 
female specimens of Ph. membranifolia erroneously referred 
to Ph. Brodiæi; they belong to the narrow form of the 
former species, common in the inner Danish waters. I 
have no doubt but that a similar mistake has taken 
place with the large “typical” plants with well developed 
lateral carpophores containing a cystocarp mentioned by 
DARBISHIRE as found at Helgoland. At any rate I cannot 
see why the plant pictured in fig. 46 (1. c. p. 32) should 
necessarily be referred to Ph. Brodiwi and not to Ph. mem- 
branifolia. Until better evidence is forthcoming it must 
be taken for granted that.cystocarps have never been as- 
certained in Phyllophora Brodiwi. 
The nemathecia, according to DARBISHIRE, arise in the 
first months of the year in the interior of the small fertile 
shoots, near their apex, single cells in the inner cortex 
