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described, and possesses characters which render it a con- 
necting link between the genus Draparnaldia and Chseto- 
phora. 
Nothing is more remarkable than the direction taken by 
the branches, which diverge strictly at right angles to the 
stem. Even the lesser kinds, called tufts, and their branch - 
lets, pass off in this way, and as four generally spring from 
the same point, there is a cruciate arrangement in every part. 
The colour of the endochrome is light greenish-yellow, and 
as the quantity is but small relatively in the larger cells, the 
appearance of a mass of it is very different from the rich 
green of the other Draparnaldiae. Again, from the profusion 
and the extreme length of the ciliae, a mucoid appearance is 
given it when removed from water. But this mucoid ap- 
pearance has a real basis different from all the other species. 
A very perceptible sheath of “ mucus ” surrounds the prin- 
cipal filaments. 
Now this is not found in D. plumosa, glomerata, and 
repetita ; for although their fronds are called “ gelatinous,” 
this latter appearance depends on the number of ciliae, and 
not on a sheath of “ mucus,” at least, I have never so found 
it in the species of Draparnaldia I have seen. In this par- 
ticular this species brings Draparnaldia into closer relation- 
ship with Chaetophora than heretofore. 
It may be useful to repeat the description of the species. 
Frond 3 — 4 inches long. Light green colour, not so green 
as Drap. glomerata and plumosa, possessing a flocculent 
appearance when in water, and highly mucous when out of 
water. To the naked eye and a low magnifying power it has 
the appearance represented in fig. 1, which is magnified about 
four times the natural size. 
Every portion is surrounded by a distinct layer of trans- 
parent mucus, extending on each side to the distance of 3 
diameters of the included ramulus. This is most easily seen 
after two days, when extraneous matter adheres to the mucus. 
The inain filament is composed of cells very slightly in- 
flated, 3 — 4 times longer than wide, about -o-oth an inch 
wide ; delicately fasciated. 
Primary ramuli proceeding at right angles chiefly in whorls 
of four, from the main filament, with an interval of 50 — 60 
cells. The sub-ramuli also proceed in the same way from the 
primary ramuli, giving the plant a cruciate appearance, as 
in fig. 1, &c. 
The cells of the ramuli as wide as long ; the larger fas- 
ciated, the smaller quite filled with green chlorophyl. 
The interspace of 50 — 60 cells of main filament being 
