404 
REV. H. FRIEND ON SOME NORFOLK ANNELIDS. 
and several other genera. We did not find a single specimen 
of Pachydrilus or Marionina either at Sutton, at Yarmouth, 
or at any other place in 1911. It is certain that many species 
exist, and the estuaries and oozy places on the coast of 
Norfolk would richly reward the investigator. 
The second group, with colourless blood, is rich in 
species, and here as elsewhere the genus Fridericia takes the 
lead. On one occasion I took up a small quantity of mould 
from the neighbourhood of the eel-traps and counted the 
specimens. No fewer than six specimens of Fnchytrceid were 
present, and of these five were Fridericias. The results were 
as follows : — 
Fridericia bisetosa, Lev. 
„ sp. nov. 
,, microcara, Friend 
Bucliholzia fallax, Mich. 
Fridericia michcelseni , Bret. 
,, bulbosa, Rosa 
Total 
1 
1 
1 
2 
8 
11 
24 
Fridericias 
22 
I have named one species, F. microcara , and have described 
it in the J.R.M.S., February, 1912. It has a little brain in 
comparison with the size of its body, and the spermathecse 
have many glands or diverticula. Another new British 
species I have not yet named, as it may possibly be known 
to the continental authorities whose works I have not yet 
had time to consult in detail. F. michcelseni, F. bulbosa , 
Bucliholzia fallax, Fnchytraius pellucidus, F. bisetosa, F. ralzeli, 
F. polychceta, and F. lobifera, found here, are widely distributed. 
I found also Henlea nasuta, which is fairly common, and 
Henlea rosai, which together with Fnchytrceus minimus, Bret, 
is at present known for only one or two other British 
localities. 
