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 MARINE ZOOLOGY 2. Obelia dichotoma, Linn. C. along S. coast and at Scilly on hydroids, stones, worm-tubes, polyzoa, and occ. on valves of Pecten, Pinna and Cyprina from 1. w. down to 40 fm. ; Padstow and Widemouth B. ! 3. O. geniculata, Linn. V. c. along S. coast and locally at Scilly on Laminaria, Fuel, Delessaria, wooden piles, and occ. on other algae, Cellaria, Crustacea, dorsal and caudal fins of Pickin dog- fish (R.Q.C.), stones, &c., from 1. w. to 30 fm. ; probably overlooked on N. coast. 4. O. longissima, Pallas. N. unc. locally in trawl re- fuse and in dredgings from 20 to 35 fm. ; S. of the Eddystone (M.B.A.) ; Looe, Polperro, Mevagissey! Gorran Haven (Peach) ; in 30 fm. Falmouth B. ! 5. Obelaria gelatinosa, Pallas. Large colonies up to 13 in. in deep water, Lynher river, under Sheviock Wood (M.B.A.) ; in 30 fm. off Pol- perro and in trawl refuse Mevagissey ! 6. Campanularia volubilis, Linn. Plentiful in 5^ fm. N. of Plymouth Breakwater (M.B.A.) 7. C. hincksii, Alder. C. Rame-Eddystone and Eddy- stone Gnds. (M.B.A.) ; in trawl refuse Meva- gissey ! 8. C. Integra, Macgillivray. On a stone from deep water off the Dodman. Hincks suggests that the C. laevis of Couch may be this species 9. C. verticillata, Linn. Eddystone Gnds. (M.B.A.) ; once in trawl refuse Mevagissey ! on Pinna off the Dodman (R.Q.C.) ; twice in trawl refuse Falmouth C.flexuosa, Hincks. C. all round the coast on stones, seaweed, buoys, &c., and in pools gen. between t-m. ; often abund. Scilly ! C. angulata, Hincks. On Zostera at Helford ! C. neglecta, Alder. Apparently n. unc. locally along S. coast, but gen. overlooked ; on hydroids and under stones between t-m. ; Whitsand B. (Robinson), near Mevagissey ! Helford ! and Mount's B. (Baily) 13. C. raridentata, Alder. Gorran Haven (Peach) ; trawl refuse, Falmouth B.! 1 4. Gonothyraea loven'i, Allman. C. Plymouth S. and found up the Tamar as far as Saltash Pier (M.B.A.) ; on Fucus occ. at Polperro at 1. s. t., on the bar at Helford and for some distance up the river! 15. Campanulina repeni, Allman. Between Penlee Pt. and Rame Hd. on algae and on stems of Tubularia (M.B.A.) ; in shallow water, Pol- perro B. ; on Delesseria between Gyllyngvase and Swanpool, Falmouth! 1 6. Opercularella hispida, Nutting. The type spec. from Plymouth on a stone associated with Clava multicornis (M.B.A.) 17. O. lacerata, Johnst. N. unc. between t.-m. St. Ives (Hincks) 1 8. Lafaea dumosa, Fleming. C. round coast and at Scilly on stones, shells, corallines, hydroids, worm-tubes ; occ. on polyzoa in trawl refuse and in dredgings from shallow water to 40 fm. ; sometimes c. between t.-m. var. robusta, Sars, off the Cornish coast (Hincks) 10. 1 1. 12. 19. 20. 21 23. 25. 26. 27. 28. 29, 3' 33 34- L. fruticosa, M. Sars. Rame-Eddystone and Eddystone Gnds. (M.B.A.) ; on dead shells and hydroids in trawl refuse, Mevagissey Calycella syringa, Linn. C. and occ. abund. along S. coast on corallines and small algae gen., on laminarian roots, Tubularia and other hy- droids, polyzoa, Crustacea, &c., from between t.-m. down to 20 fm. ; Padstow B. ! and Scilly C.fastigiata, Alder. Eddystone Gnds. (M.B.A.) ; on Plumularia tubulifera from Cornwall (Hincks) ; Mount's B. ! Cuspidella costata, Hincks. Inner Eddystone trawling Gnds; (M.B.A.) ; Looe (Marryat) C. grandis, Hincks. On stems of Halecium tenellum (M.B.A.) ; on stems of various hydroids, Fowey (Martyn) Filellum serf ens, Hassall. On large Sertularidae and esp. S. abietina, c. in 30 fm. off Polperro ! in trawl refuse, Mevagissey! and at Gorran Haven (Peach) Trichydra pudica, T. S. Wright. On fine gravel, Eddystone Gnds.; the Eddystone buoy (M.B.A.) Coppinia arcta, Dalyell. On various hydroids on the Eddystone and Rame-Eddystone Gnds. (M.B.A.); in 30 fm. off Polperro! once in trawl refuse Mevagissey! Gorran Haven(Peach); in trawl refuse from Falmouth B. and at 1. s. t. St. Michael's M. ! Hincks suggests that Cam- panularia intertexta, Couch, may be this species Halecium beani, Johnst. On stones, shells, and hydroids from 1. s. t. to 60 fm. ; n. unc. in Plymouth S. and on the Eddystone Gnds. (M.B.A.) ; Looe and Polperro! Mevagissey! in trawl refuse from Falmouth B. (Miss Vigurs) ; on worm-tubes at Helford! H. halecinum, Linn. On stones, shells, esp. Pinna, and Chaetopterus tubes, shallow water to 60 fm. ; n. unc. Plymouth S., and on Eddy- stone, Rame-Eddystone and Looe-Eddystone Gnds. (M.B.A.) ; off Polperro, Mevagissey! the Dodman, Gorran Haven ! and Falmouth in trawl refuse and dredgings ; Padstow B. and Scilly! H. muricatum, E. and S. Mevagissey r. (J.C.) ; and in trawl refuse, Falmouth B. r. (Cocks) H. labrosum, Alder. Eddystone Gnds. (M.B.A.) ; on fisherman's lines off the Dodman (Marryat) H. tenellum, Hincks. In 1 8 fin. off Plymouth (M.B.A.) Haloikema lankesteri, G. C. Bourne. Duke Rk. and Jennycliff B., Plymouth (M.B.A.) ; Fowey (Martyn) Ophiodes mirabifis, Hincks. On laminarian roots, Padstow B. ! Sertularella gayi, Lamouroux. Plymouth S.; on fine sand grounds about the Eddystone ; dredged also on Rame-Eddystone and Looe-Eddystone Gnds. (M.B.A.) ; off Polperro and in trawl refuse Mevagissey ! on Gorgonia 60 fm. off the Dodman (Hincks), and from fisherman's lines, Gorran Haven (Peach) I2 3