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MARINE ZOOLOGY 1 6. Spirorbii nautiloldei^ Link. A minute species with coiled tube, the coils being arranged in the same plane. Attached to weed, corallines, and many other objects. Very common. Hastings. 17. Spirorbis lucidus, Montagu.* Common. Hastings. 18. Spirorbis communis A Brighton. 19. Filograna implexa. Animal secreting a long filiform, cal- careous tube. The individuals are social, the associated tubes being packed together parallel-wise in considerable masses. Trawled ; not very common. Hastings. Arenicolid.* 20. Arenicola piscatorum. The ' fisherman's worm ' is about 6 inches long, brown, and with a large head which is covered with spiny tubercles. The dendriform gills are arranged along each side of the middle portion of the body. Very common upon the sand shore, where it burrows deeply. Hastings. ClRRATULIDiE 21. Cirratula, sp. Hastings. CHJETOPTERIDi* 22. Chatopterus insignis, Baird. This species forms a tough parchment- like tube, 12 inches in length, by | inch in diameter. The tubes are trawled upon the Diamond Ground, but so far as the writer has observed are always empty. Not uncommon. Hastings. 23. Nereis margaritacea. Animal about 4 inches long, of a pearly lustre, and flattened dorsally and ventrally. It is nearly always found in- habiting the same shell with the trawled hermit crab ; this however is not the case with the smaller, shore-frequenting hermit crab. Common. Hastings. 24. Nereis fimbriata, Miiller.* Bexhill. 25. Nereis brevimanus. t Brighton. 26. Nereis longissima. t Brighton. 27. Nereis biliueata. t Brighton. 28. Nephthys, sp. Hastings. 29. Phyllodoce viridis. * Common. Hastings. Amphinomid^ 3 O . Euphrosyne foliosa . Not uncommon. Hastings. Aphroditid^ 3 1 . Aphrodite aculeata. Common. Hastings. POLYZOA ECTOPROCTA CYMNOL/EMATA Cheilostomata ./Eteid^ 1 . Mtea anguina, Linnaeus. A minute species with zoarium of ivory whiteness, usually found trailing over sea- weed, and giving off from enlargements of the creeping stem or stolon, short tubular zocecia, curved and expanded in the upper part, and with aperture terminal. The zooecium bears some fancied resemblance to the arched head and neck of the hooded cobra. From moderately deep water. Not uncommon. Hastings. 2. jEtea recta, Hincks. Resembling /E. anguina but with zooe- cium straight, and with longer aperture. Common upon rock and shells from the Diamond Ground and deep water. Hast- ings. EuCRATIIDiE 3. Eucratea chelata, Linnasus. This dainty little species might well receive the popular appellation of the little glass slipper, for the zocecia strikingly re- semble a series of semi-transparent little slippers united together toe and heel by short prolongations. A free form, long, and rather tubular in the lower part of the zooecium also occurs at Hastings, but is comparatively rare. Type, upon weed and coralline stems ; somewhat rare. Hastings. 4. Gemellaria loricata, Linnaeus. Colonies some 7 inches in height, seaweed-like and of a dull buff or grey colour. Stems formed of matted fibres, and the branches of zocecia somewhat ovate, but tapering downwards, and arranged back to back. Not uncommon. Hastings. 85