4io 
Notes . 
2. A. confervicola (Nag.) Rabh. = Herposteiron confervicola , Nag., 
in Kiitzing, Species algarum, 1849, p. 424. 
3. A. poly chaete (Hansg.) Fritsch = Herposteiron polychaete , Hansg., 
Prodromus der Algenflora von Bohmen, p. 258. 
Genus Chaetosphaeridium, Kleb. (1891). 
1. Ch. globosum (Nordst.) Kleb. = Herposteiron (. Aphanochaete ) 
globosa , Nordst. 
2. Ch . Pringsheimii , Kleb. 
Genus Dicoleon, Kleb. (1893). 
1. D. Nordstedtii, Kleb.— Aphanochaete globosa forma paulo maior , 
Nordst. 
Genus Conochaete , Kleb. (1893). 
1. C. polytricha (Nordst.) Kleb. ) = Aphanochaete polytricha, 
2. C. comosa, Kleb. j Nordst. 
It seems probable that A. vermiculoides , Wolle, is not one of the 
Chaetophoraceae at all. 
Before concluding, I should like to mention the frequent occurrence 
of cells with curious red granular contents, which are evidently in 
some way connected with the Alga I have been examining. I found 
them in great numbers in the winter months, but since then they have 
disappeared, and not a single one remains. The contents of an 
ordinary vegetative cell begin to lose their bright green colour, and 
this is generally followed by the escape of the contents, which however 
remain lying immediately outside the empty cell (Fig. 22, 1 and 2, e ) 
and are surrounded by a distinct membrane. The contents become 
more and more granular (Fig. 22, 1 and 2, c), and the green matter 
becomes replaced by red granules. These granules increase in size, 
apparently at the expense of the smaller ones, until only 3-7 large 
ones remain in the almost empty membrane (Fig. 22, 1, r ) ; these 
exhibit a slight movement, probably due to convection currents. 
Ultimately the membrane becomes disorganized, and the granules 
sink to the bottom; a considerable mass of them collected on the 
bottom of the vessel in which I kept the Aphanochaete , forming a dark 
essential particular from the same-named species of Braun (cf. Klebahn, loc. cit., 
pp. 293, 294). Probably also A. repens , Br., and A. confervicola (Nag.) Rabh., 
belong together. 
