24
THE ESSEX NATURALIST
Amphictenidae
Pectinaria koreni (Malmgren)
Not common, but found on muddy and sandy bottoms and
sometimes on the lower shore. P. belgica may also be present and
confused with P. koreni.
Ampharetidae
Ampharete grubei Malmgren
Reasonably common in mud and sand on the shore. Recorded
from the Bradwell shore in all years 1958-1962.
Amphicteis gunneri (Sars)
One record from Bradwell Creek.
Melinna palmata Grube
From Bradwell Creek and in dredge samples from bottom of
sandy mud around Bachelor's Spit (19.7.1962).
Terebellidae
Amphitrite gracilis (Grube)
Recorded from a bottom of shell and mud at station N.6
(2.5.1962).
Amphitrite johnstoni Malmgren
From mud in Bradwell Creek and also from the Bradwell shore
in 1958 and 1960.
Lanice conchilega (Pallas)
Along the middle and lower shore at Bradwell being very
common along low water mark in 1965. Also taken on Mersea
Flat and in dredge samples from around Bachelor's Spit
(19.7.1962).
Thelepus cincinnatus (Fabricius)
Dredged from mud and sand around Bachelor's Spit
(19.7.1962).
Streblosoma bairdi (Malmgren)
Also occurring at Bachelor's Spit with the last mentioned
species.
Terebellides stroemii Sars
Of rare occurrence in the mud of the River Colne, below
Brightlingsea Creek in 1903 (Sorby, 1903).
Sabellidae
Sabella pavonina Savigny
Of general occurrence on some oyster beds in creeks. A dense
growth exists along low water mark in Bradwell Creek on a
bottom of mud and shell. Also recorded from among fouling on
ships anchored in the Blackwater (1959-1960) and in the water
intake system of Bradwell Power Station (1964 and 1965).