200 MR. H. E. HURRELL ON THE POLYZOA IN NORFOLK WATERS. 
In a bay about a half-mile the Norwich side of Strumpshaw 
Dyke it was to be found in profusion this year, twining itself 
around the stems of the Water Lily, on the under-side of the 
leaves of the same plant, and occasionally around the stems 
of Potomageton. 
At Rockland, Stratiotes (Water-soldier) was the plant 
mostly favoured, whilst other large-stemmed plants in the 
Stalham Staithe dyke bore this regal polyzoon. It was 
reported to me fromWroxham late in September; andalthough 
I have not had an opportunity of testing the Waveney at 
Beccles this year, I have no doubt that it put in its annual 
appearance in that part of the river. As a rule this polyzoon 
is more constant in its appearance in the same localities than 
many other species, and I attribute this to the fact that the 
spine-begirt statoblasts hang together and hook themselves 
to the debris of decaying vegetation until the time of their 
hatching, when they are not long in locating themselves on 
the new vegetation. 
Any one cognisant of the way in which these statoblasts 
hang on to each other in catch-as-catch-can fashion will 
quite appreciate this point. I liberated a hundred or so of 
these statoblasts in a small tank some time since, and each 
one was separated from its neighbour; but in a few days they 
got together into a couple of ball-like masses, and could only 
be separated by the application of a gentle force. The same 
thing happens where an enormous number of statoblasts 
are liberated as occurs at the close of a season, and these 
are to be found sometimes in aggregated masses of thousands 
in a ball the size of a walnut and sometimes larger. 
Lophopus crystallinus. 
Another genus of which at present only some species 
have been found is Lophopus crystallinus. From the 
description we have of the foreign form of Pectinatella 
magnifica I should say that Lophopus crystallinus is a 
fairly close competitor for general beauty and grandeur. 
This form appears to have a permanent home at and 
about Brundall, and I have seen masses clinging in thousands 
to the roots of the Iris and flag growing in the Ice-house 
