Mli. it. GURNEY ON FRESH- AND BRACKISH-WATER CRUSTACEA. 637 
VI II. 
THE FRESH- AND BRACKISH- WATER CRUSTACEA 
OF EAST NORFOLK.* 
By Robert Gurney, B.A. 
Read 26th January, 1904- 
Excluding scattered references in works on British Entoniostraca, 
but little has hitherto been published on the Crustacea of Norfolk. 
The only satisfactory list is that of Mr. Scourfield, published this 
year, hut even that is not complete, and also it gives no information 
as to localities. In the present paper, 1 intend to give a list of all 
the fresh- and brackish-water species hitherto recorded, except the 
Ostracoda ; being myself responsible for practically all the records. 
The Ostracoda have been omitted for various reasons, one of which 
is that a fairly complete list of them may be found in a paper by 
Messrs. Brady and Robertson (1870). 
The Broads District may be included in a triangle “ having for 
its angles Norwich, Lowestoft and Happisburgh ” (Lubbock, 1879, 
p. 79), and 1 believe I have obtained a tolerably accurate know- 
ledge of the Crustacean fauna of this district. Fritton Lake and 
Oulton Broad cannot fairly be excluded from a survey of the 
Broads District. 
1 have naturally devoted myself more particularly to the Broads 
themselves, and I think that my list of species, for them and for 
the rivers with which they are for the most part connected, is 
sufficiently complete. The attention paid to the different Broads 
has, however, been very unequal, Sutton Broad having, of course, 
been worked far more thoroughly than any other. In fact, if 
I had no further records than those from Sutton and its neighbour- 
hood, my list, of Cladocera, at any rate, would not be very materially 
curtailed. This district is no doubt actually richer than any 
other, but probably many additions remain to be made to the lists 
* This paper is the result of work carried out at the Sutton Broad 
Laboratory during the year 1903, aud any dates given refer to that year. 
