very young specimens however, which grew in a proliferous
manner from very old fronds, the reticulations were in right
lines.
This species occurs sometimes at a great distance from
the sea, as in the Trent near Derby. It seems to be most
nearly allied to Enteromorpha compressa, with unbranched
specimens of which, if such ever occur, it would very easily
be confounded. Nothing can be more variable in respect
of length and breadth ; sometimes it is only a few inches in
length, at others as many feet. Again, specimens occur
not more than two lines broad, while others exceed three
inches.—M. J . B.
