20
THE ESSEX NATURALIST
Phylum NEMERTINI
Class ANOPLA
Order Heteronemertini
LINEIDAE
Lineus gracilis Johnson
In mud on the banks of the Colne just below Brightlingsea
Creek (Sorby, 1903).
Lineus obscurus Desor
Collected near East Mersea Stone (Sorby, 1903).
Class ENOPLA
Order Hoplonemertini
Amphiporidae
Amphipoms lactifloreus (Johnson)
One specimen in sand from the Bradwell Shore (29.5.1963) was
identified as this species. Many other nemertines were collected
in littoral and benthic samples.
Phylum ANNELIDA
Class POLYCHAETA
Aphroditedae
Aphrodite aculeata Linne
Recorded from the Blackwater at Osea Island in 1888 (Cole)
but now only common in off-shore waters, several being taken in
dredge hauls at Swire Hole in July 1962 and June 1965. Mostly
on sand and mud bottoms.
Lepidonotus squamatus (Linne)
Very common in mud and shell on the lower shore and sub-
littorally from Osea Island seawards.
Lepidonotus clava (Montagu)
Occurring with the last mentioned and may be equally com-
mon. This is normally considered to be a southern or western
species in the British Isles.
Gattyana cirrosa (Pallas)
One or two specimens only from the Bradwell shore in
September 1958 and January 1960.
Harmothoe imbricata (Linne)
One specimen only under stone on the Bradwell shore (11.6.63).
Harmothoe impar (Johnston)
On the lower shore and in bottom samples. Generally distri-
buted but not common.
Harmothoe longisetis (Grube)
One record only, from Line 2a.St.4 (10.9.60).