ARCHER, ON PALMOGL@A MACROCOCCA. 117 
and reaching entirely from end to end of the cell, or, in 
others, as a somewhat lenticular body, thus, in this edge view, 
presenting a fusiform outline, and not reaching to the cell- 
wall at each end (figs. 2 to 6). In the middle of the chloro- 
phyll-plate there is usually a starch-granule within the 
central projection or swelling-out. If a cell seen from the 
point of view showing thus the edge or lateral view of the 
chlorophyll-plate be caused to make a quarter of a revolution 
on its longitudinal axis, the chlorophyll-plate presents its 
broad or front surface to the observer, provided it be not 
obscured by the too dense remaining contents, when it is 
seen to be (of course less intensely, but) uniformly green. 
De Bary describes for M. Braunii this chlorophyll-plate to be 
minutely toothed at the margin; but, so far as I can see, if 
I be right in my identification of the plant, it would, perhaps, 
be more correctly described as irregularly crenate. Excep- 
tionally and rarely, the chlorophyll-plate possesses three (or 
four, De Bary) planes, presenting in end view a triradiate (or 
quadriradiate) figure. The remainder of the cavity of the 
cell may be apparently entirely filled by a rather coarsely 
granular, peculiarly coloured endochrome, or it may be 
destitute of it, or nearly so, possessing then, besides, only 
watery or colourless contents. In the latter case, indeed, is 
the chlorophyll-plate best seen ; and then only, or when the 
granular endochrome is but sparing, can it be discerned at all 
in front view. But in certain species an intermediate con- 
dition appears to be the most common; that is to say, the 
whole of the remaining cavity of the cell is not filled by the 
granular endochrome, but the latter forms only a parietal 
layer, sometimes somewhat sharply defined within, and 
leaving a clear intermediate space between it and each broad 
or front surface of the chlorophyll-plate. In M. violascens 
(De Bary), about the middle of the parietal layer, at one side, 
there may be often seen a little depression. This sometimes 
contains a little corpuscle or granule; but I have by no 
means always, or indeed often, been able to detect it. De 
Bary considers this a nucleus. In M. Braunti, and his /. 
chlamydosporum, this nuclear body seems to be in contact 
with the plate. In this genus, when a cell has attained the 
full length proper to the species, self-division sets in, As in 
all the elongate forms, here also the line of division takes 
place transversely, cutting the cell into two in a line at right 
angles toits longitudinal axis. A division of the chlorophyll- 
plate either precedes it or is apparently affected by it, 
according to the species. In young daughter-cells, imme- 
diately after division, when the central corpuscle is to be 
