Phyllophora Brodizi and Actinococcus subeutaneus. 11 
parasitic on the gametophyte generation and asks whether it 
is impossible that in this case the tetrasporophyte is so also’. 
Il. The Reproduction of Phyllophora membranifolia. 
Before describing the development and the fate of the 
procarps of Ph. Brodiei I shall briefly mention the repro- 
duction of the related Ph. membranifolia. This species is a 
typical diplobiontic Floridea, having sexual and asexual 
Fig. 1. Phyllophora membranifolia. Transverse section of androphore 
showing four antheridial crypts. 625 : 1. 
individuals. The first are of two distinct kinds, male and 
female. The male individuals produce the antheridia in 
particular yellowish or nearly colourless, up to 2 mm 
long, folioles borne on the upper border of the flat fronds. 
The antheridia, as shown by DARBISHIRE (1895, p. 30), arise 
in small globular crypts sunk in the outer cortical layer 
of the spermophores and provided with an orifice in the 
roof (fig. 1). — The procarps arise in the cortical layer of 
particular oblong or nearly globular short-stalked carpo- 
phores borne on the upper part of the cylindrical and the 
1 H. Printz (1926, p. 60) has mentioned some specimens of Phyllo- 
phora Brodiæi collected in August at Trondhjem with young nemathecia 
not identical with the nemathecia of Aclinococcus. Upon enquiry Prof. 
Printz has kindly answered me that he is not now able to give any 
information about this observation which was made many years ago, 
and that he has not access now to the specimens in question. 
