Cnidarians

1. Hormathia Margarita, 2. Phellia Brodricii, 3. Peachia Hasata, 4. P. Undata, 5 Stomphia Churchiae, 6. Ilyanthus Mitchellii.

Figure 6.Holotype of Errinopora fisheri, USNM 1123526: A–D branch tips with dactylopore spines arranged in crescents (female ampulla shown in figure D) E, H–I lateral view of gastrostyles F–G coenosteal texture J detail of gastrostyle spines K dactylostyle.

Figure 2.Living specimens of Leptoseris troglodyta sp. n. a Philippines, Cebu Strait, W of Bohol, NW of Cabilao Island, 10–30 m depth (7 November 1999) b Indonesia, Tukang Besi Islands (Wakatobi), Binongko, 20 m depth (10 May 2003) c Indonesia, North Sulawesi, S of Bunaken Island, 17 m depth (19 December 2008; photo B.T. Reijnen) d Palau, W of Ulong Island (Rattakadokoru Island), W off barrier reef, 32 m depth (28 July 2002) e Papua New Guinea, Misima Island, 6–10 m depth (31 May 1998; photo G. Paulay) f Guam, Blue Hole, 35 m depth (1 June 2000; photo G. Paulay).

Figure 2.Sinularia australiensis sp. n., holotype NTM C14519. A point clubs B collaret spindles C leptoclados-type clubs of surface layer of lobule D wart clubs of surface layer of lobule E spindles of surface layer of lobule. Scale of 0.10 mm at E only applies to E.

Figure 4.Anthopleura pallida. A Oral view B Lateral view C Detail of directives and siphonoglyph D Cross section through proximal column E Longitudinal section through margin showing acrorhagi and marginal sphincter muscle F Detail of spermatic cysts G Longitudinal section through distal column showing one verruca H Longitudinal section through base showing basilar muscles I–X Cnidae.– acrorhagi: I small basitrich J basitrich K holotrich L spirocyst; actinopharynx: M small basitrich N basitrich O microbasic b-mastigophore P spirocyst; column: Q small basitrich R basitrich S spirocyst; filament: T basitrich U spirocyst V microbasic p-mastigophore; tentacle: W basitrich X spirocyst. Abbreviations.– acr: acrorhagi, bm: basilar muscle, c: column, d: directives, fo: fosse, mp: marginal projection, od: oral disc, pd: pedal disc, pm: parietobasilar muscle, rm: retractor muscle, s: siphonoglyph, sc: spermatic cyst, sp: sphincter, t: tentacles, vr: verruca. Scale bars: A–B: 10 mm; C–H: 200 μm; I–X: 25 μm.

Figure 3.Sclerites of Sphaerasclera flammicerebra comb. n. ZMUC-ANT-000256. Sclerites of polyparium. A. Small radiates (left of 0.05 mm scale bar) B Larger radiates C Large tuberculate spheroids of colony surface and interior.

Figure 13.Cycloseris boschmai sp. n. specimen showing transparent extended tentacles with white acrospheres at their tips; Indonesia, North Sulawesi, Lembeh Strait, Lobangbatu, February 2012.

Figure 15.Scanning electron micrographs of polyp sclerites of Xenia miniata Reinicke, 1997 holotype (RMNH Coel. 23514). a Regular sclerites b Pear-shaped sclerite c Fused sclerites. Scale bar 10 µm.

Figure 2.Pachyseris rugosa. a Lateral view of colony IRD HS1442 b Lateral view of colony IRD HS152 showing very irregular fronds and carinae c Detail of the fronds of specimen IRD HS152 d Specimen IRD HS221, white arrow points at a dash-like columella e SEM image of IRD HS2594, white arrows point at the fused dissepiments connecting the inner end of the radial elements and the reduced columellae f SEM image of ornamentation on radial elements showing single granules (sg), clumped granules (cg) and menianae (me).

Description: Digital still collected as part of CODEMAP Item Type: Image Title: Actinauge Copyright: CODEMAP Species: Actinauge Site: Atlantic -- Celtic Site Description: Seafloor Depth (m): -1338.83 Latitude: 48 deg 39' 11" N Longitude: 10 deg 02' 11" W Countries: UK -- Whittard Canyon Habitat: Submarine Canyon Rig: RRS James Cook ROV: ISIS Deposited By: Ms Katleen Robert Deposited On: 16 September 2013

Description: This is the only species of stauromedusa found in the region. Id of this photo has been confirmed by a world expert, A. Collins at the Smithsonian Museum. Item Type: Image Title: Jelly Lucernaria bathyphila Copyright: SERPENT project Species: Lucernaria bathyphila Behaviour: On the seafloor, probably feeding. Site: Atlantic -- North Sea -- West of Shetland -- TornadoNorth Sea -- West of Shetland -- Tornado Site Description: Seafloor Depth (m): 1050 Latitude: 60 deg 33' 44" N Longitude: 4 deg 27' 23" W Countries: UK -- West of Shetland Habitat: benthic Rig: Stena Carron Project Partners: OMV, Oceaneering, Stena ROV: Magnum 156 Deposited By: Dr Daniel Jones Deposited On: 23 December 2009

Cerbère Pyrénées-Orientales France

Nordsømuseet Hirtshals

Cerbère Pyrénées-Orientales France

Kattegatcentret Grenå

Møgelskår, Nordby Bakker, Samsø, Danmark

Californien,Monterey Bay Aquarium

In captivity

Rørvig

Sødringholm, Randers Fjord

Nordsømuseet Hirtshals