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FIGURE 1 in New Lysianassoid Amphipods from the North Eastern Atlantic Ocean

FIGURE 1. The Bay of Biscay with the position of the stations where the new amphipods species were collected. M: Meriadzek Terrace; N: Saint Nazaire Terrace.

FIGURE 11. Bathyamaryllis biscayensis n in New Lysianassoid Amphipods from the North Eastern Atlantic Ocean

FIGURE 11. Bathyamaryllis biscayensis n. sp., holotype female. A: Epimeral plate 1; B: Epimeral plate 2; C: Epimeral plate 3, note the size of the plate; D: Uropod 1; E: Uropod 2, note the inequal length of the rami; F: Uropod 3; G: Uropod 2, enlargement of the apical part of the inner ramus; H: Telson. Scales: G: 0.1 mm; H: 0.5 mm; A, B, C, D, E, F: 1 mm.

FIGURE 6. Ambasia anophthalma n in New Lysianassoid Amphipods from the North Eastern Atlantic Ocean

FIGURE 6. Ambasia anophthalma n. sp., holotype female. A: Epimeral plate 1; B: Epimeral plate 2; C: Epimeral plate 3; D: Uropod 1; E: Uropod 2; F: Uropod 3; G: Telson. Scales: F, G: 0.1 mm; D, E: 0.5 mm; A, B, C: 1 mm.

FIGURE 10. Bathyamaryllis biscayensis n in New Lysianassoid Amphipods from the North Eastern Atlantic Ocean

FIGURE 10. Bathyamaryllis biscayensis n. sp., holotype female. A: Pereopod 4, note the size of the coxa and the oostegite; B: Pereopod 4, enlargement of the dactylus; C: Pereopod 5, note the coxa bilobate and the basis margin slightly crenate; D: Pereopod 6, note the small coxa and the basis margin crenate; E: Pereopod 6, enlargement of the margin crenate; F: Pereopod 7, note the small coxa and the basis margin crenate; G: Pereopod 7, enlargement of the margin crenate. Scales: B, E, G: 0.5 mm; A, C, D, F: 1 mm.

FIGURE 4. Ambasia anophthalma n in New Lysianassoid Amphipods from the North Eastern Atlantic Ocean

FIGURE 4. Ambasia anophthalma n. sp., holotype female. A: Maxilliped; B: Maxilliped, enlargement of the distal part of the palp; C: Mandible; D: Enlargement of a part of the mandible; E: Mandible, enlargement of the lacinia mobilis vestigial; F: Maxilla 2; G: Gnathopod 1; H: Pereopod 3. Scales: B, D, E: 0.1 mm; A, C, F: 0.5 mm; G, H: 1 mm.

FIGURE 3. Ambasia anophthalma n in New Lysianassoid Amphipods from the North Eastern Atlantic Ocean

FIGURE 3. Ambasia anophthalma n. sp., holotype female. A: Head with antennae; B: Antenna 1; C: Antenna 2; D: Maxilla 1; E: Maxilla 1, enlargement of the apical part of the palp. F: Epistome and Labrum. Scales: E: 0.1 mm; B, C, D, F: 0.5 mm; A: 1 mm.

FIGURE 9. Bathyamaryllis biscayensis n in New Lysianassoid Amphipods from the North Eastern Atlantic Ocean

FIGURE 9. Bathyamaryllis biscayensis n. sp., holotype female. A: Gnathopod 1; B: Gnathopod 2, note the oostegite not completely developed; C: Gnathopod 2, enlargement of propodus and dactylus; D: Pereopod 3, with enlargement of: a part of coxa 3, a spine and the dactylus, note the oostegite; E: Mandible; F: Mandible, part of the inner side. Scales: A, C, E, F: 0.5 mm; B, D: 1 mm.

FIGURE 4 in First record of genus Orbiniella Day, 1954 (Polychaeta: Orbiniidae) in North Atlantic Ocean with the description of a new species

FIGURE 4. Orbiniella petersenae sp. nov. SEM micrographs of paratypes IINH 35669. A–B, anterior end, dorsal view; C–E, anterior end, ventral view; F, detail of right lateral side of prostomium showing ciliature (insert of E).

FIGURE 6 in First record of genus Orbiniella Day, 1954 (Polychaeta: Orbiniidae) in North Atlantic Ocean with the description of a new species

FIGURE 6. Orbiniella petersenae sp. nov. SEM micrographs of paratype IINH 34897. A, posterior end, dorsal view; B, detail of last elongated chaetigers (large insert in A); C, detail of one of the last well developed parapodia showing acicular and capillary chaetae (small insert in A); D, posterior pre-pygidial region with crowded chaetigers (black arrowhead showing first segment with parapodium; white arrowhead showing a segment still without parapodium); E, first reduced chaetigers of prepygidial region showing acicular chaetae and notopodial cirrus (lower insert in D); F, pygidium showing four lobes (upper insert in D).

FIGURE 5 in First record of genus Orbiniella Day, 1954 (Polychaeta: Orbiniidae) in North Atlantic Ocean with the description of a new species

FIGURE 5. Orbiniella petersenae sp. nov. SEM micrographs of paratypes IINH 35669. A, detail of CH5 and CH6, ventral view showing two annuli between chaetal bundles; B, CH8 and CH9, ventral view, showing three annuli between chaetal bundles; C, notopodia of CH3, upper view showing notopodial papilla; D, notopodia of CH5 showing capillary and acicular chaetae; E–F, detail of crenulated chaetae showing rows of small teeth on cutting side.

FIGURE 9 in First record of genus Orbiniella Day, 1954 (Polychaeta: Orbiniidae) in North Atlantic Ocean with the description of a new species

FIGURE 9. Orbiniella petersenae sp. nov. µCT sections of paratype IINH 35673. A, midsagittal section (dotted lines showing frontal sections in B and C, and transversal sections in D and E); B, mid-frontal section at gut level showing arrangement of digestive system (dotted lines showing transversal sections in F and G); C–D, transversal and frontal sections at foregut showing elements of buccal cavity; E–G, transversal sections at oesophagus, fore stomach and fore intestine level.

FIGURE 3 in First record of genus Orbiniella Day, 1954 (Polychaeta: Orbiniidae) in North Atlantic Ocean with the description of a new species

FIGURE 3. Orbiniella petersenae sp. nov. A–C, Holotype IINH 35670; D–E, Paratype IINH 35672. A, dorsal view (chaetae not illustrated); B, anterior end, dorsal view; C, anterior end, ventral view; D, posterior end, dorsal view; E, posterior end, ventral view.

FIGURE 1 in First record of genus Orbiniella Day, 1954 (Polychaeta: Orbiniidae) in North Atlantic Ocean with the description of a new species

FIGURE 1. World map showing type location of all described species and likely members of the genus Orbiniella. Inserted map of Iceland showing the distribution and temperature and depth ranges (data referring only to start of the tow) of the new species in the area surveyed by the BIOICE expeditions.

FIGURE 7 in First record of genus Orbiniella Day, 1954 (Polychaeta: Orbiniidae) in North Atlantic Ocean with the description of a new species

FIGURE 7. Orbiniella petersenae sp. nov. µCT sections of paratype IINH 35673. A, left parasagittal section (dotted lines showing frontal sections showed in B and C); B, mid-body frontal section showing arrangement of the digestive system; C, ventral frontal section showing ventral longitudinal muscle bands and oocytes.

FIGURE 8 in First record of genus Orbiniella Day, 1954 (Polychaeta: Orbiniidae) in North Atlantic Ocean with the description of a new species

FIGURE 8. Orbiniella petersenae sp. nov. µCT sections of paratype IINH 35673. A, left parasagittal section (dotted lines showing transversal sections showed from B to G); B–C, transversal section at foregut (oesophagus) level showing muscles associated with chaetae and coelomic cavity filled of oocytes; D–E, transversal section at midgut (stomach) level (fore and hind stomach respectively) showing its tripartite organization; F–G, transversal section at fore intestine level.

FIGURE 2 in First record of genus Orbiniella Day, 1954 (Polychaeta: Orbiniidae) in North Atlantic Ocean with the description of a new species

FIGURE 2. Illustrations of described species of Orbiniella sorted by date of original description (redrawn from Day 1954; Hartman 1967; Hobson 1974; Blake 1985; Blake & Hilbig 1990; Buzhinskaja 1993; Branch 1998; Gillet 1999; Narayawasmany & Blake 2005). Orbiniella uniformis was not illustrated by Hartman (1967), Falklandiella annulata Hartman, 1967 is currently considered as likely member of genus Orbiniella. Orbiniella branchiata and O. drakei are probably not members of Orbiniella (see Discussion).

FIGURE 5 in New Acotylea (Polycladida, Platyhelminthes) from the east coast of the North Atlantic Ocean with special mention of the Iberian littoral

FIGURE 5. Stylochus neapolitanus (Delle Chiaje, 1841–1844) Lang, 1884. A–C, living specimens; D, sagittal reconstruction of a whole specimen; E, sagittal reconstruction of the reproductive system (anterior to the right). Abbreviations: b, brain; cg, cement glands: de; ductus ejaculatorius; fp, female pore; i, intestine; ma, male atrium; mp, male pore: op, oral pore; ov, ovaries; pg, prostatic glands; ph, pharynx; pv, prostatic vesicle; spv, spermiducal vesicle; sv, seminal vesicle: t, tentacles; te, tentacular eyes; u, uterus; ve, vagina externa; vi, vagina interna.

FIGURE 6 in New Acotylea (Polycladida, Platyhelminthes) from the east coast of the North Atlantic Ocean with special mention of the Iberian littoral

FIGURE 6. Discocelis tigrina (Blanchard, 1847) Lang 1884. A–D, living specimens; E, sagittal reconstruction of a whole specimen; F, sagittal reconstruction of the reproductive system (anterior to the right). Abbreviations: ca, common atrium; cgo, common genital opening; i, intestine; Lv, Lang's vesicle; m, muscle layers; ml, male lobes; ofgs, opening of the female genital system; op, oral pore; ph, pharynx; po, prostatoid organs; spv, spermiducal vesicle; te, tentacular eyes.

FIGURE 4. Cryptocelis compacta Lang, 1884. A, B, E, F in New Acotylea (Polycladida, Platyhelminthes) from the east coast of the North Atlantic Ocean with special mention of the Iberian littoral

FIGURE 4. Cryptocelis compacta Lang, 1884. A, B, E, F living specimens; C, sagittal reconstruction of a whole specimen; D, sagittal reconstruction of the reproductive system (anterior to the right). Abbreviations; cg, cement glands; dpv, distal part of the prostatic vesicle; fa, female atrium; fp, female pore; fvs, false seminal vesicle; i, intestine; mc, male copulatory organ; mp, male pore: op, oral pore; ov, ovaries; ph, pharynx; pp, penis papilla; ppv, proximal part of the prostatic vesicle; shg, shell glands; spv, spermiducal vesicle; vd, vas deferens; ve, vagina externa; vi, vagina interna.

FIGURE 2. Hoploplana elisabelloi n in New Acotylea (Polycladida, Platyhelminthes) from the east coast of the North Atlantic Ocean with special mention of the Iberian littoral

FIGURE 2. Hoploplana elisabelloi n. sp. A–C, living specimens; D, histological section of a tentacle and tentacular eyes; E, histological section of the brain; F, histological section of the reproductive system (anterior to the left); G, sagittal reconstruction of a whole specimen; H, histological section of the cirrus; I, histological section of the stylet; J, sagittal reconstruction of the reproductive system. Abbreviations: b, brain; ce, cerebral eyes; cg, cement glands; ed, ejaculatory duct; esv, external seminal vesicle; fa, female atrium; fp, female pore; i, intestine; ma, male atrium; mp, male pore; op, oral pore; ov, ovaries; ovd, oviducts; ph, pharynx; pv, prostatic vesicle; sc, shell camera; spdb, spermiducal bulbs; st, stylet; t, tentacles; te, tentacular eyes; ve, vagina externa; vi, vagina interna.