BOTTOM FAUNA OF BLACKWATER ESTUARY: 1970 267 Probably more common than its single record (Stn. 2A.6) would suggest. Eulalia pusilla Oersted A single record from Thirslet Creek (Stn. TC.1). Nephthidae Nephthys incisa Malmgren Fairly widespread, occurring at stations N.6, C4, S.6, N.2, Barrier Wall, and offshore. Glyceridae Goniada norvegica Oersted Probably more common than its three records would sug- gest; recorded from stations N.2, N.6, and 2A.1. Orbiniidae Scoloplos armiger (Muller) Locally common in the area encompassed by stations TL.2, Cl, C.2 and S.10. CAPITELLIDAE Notomastus latericeus Sars Probably widespread; recorded from stations 2A.5 and line 1.5. Sabellidae Laomone kroyeri Malmgren Uncommon; known only from station HB.3. Class MALACOSTRACA Order Amphipoda Aoridae Microdeutopus anomalus (Rathke) Locally common in the vicinity of Thirslet Creek (Stns. TL.4, TC.2, TC.3 and Cl). Order Decapoda Portunidae Macropipus arcuatus (Leach) Uncommon; recorded only from offshore waters. Xanthidae Pilumnus hirtellus (Linnaeus) Uncommon; recorded only from the Barrier Wall. Class LAMELLIBRANCHIATA Order Protobranchia Nuculidae Nucula turgida Leckenby and Marshall Fairly common; recorded from station 3 of line 1 within the Blackwater, and from the offshore stations.