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Figure 7 in Morphology, feeding and behaviour of British Magelona (Annelida: Magelonidae), with discussions on the form and function of abdominal lateral pouches

Figure 7. Various palp positions observed for Magelona mirabilis from in situ experiments. Third picture depicts debris collecting on and in between the palps.

Figure 3 in Morphology, feeding and behaviour of British Magelona (Annelida: Magelonidae), with discussions on the form and function of abdominal lateral pouches

Figure 3. Experimental set-up: A, aquarium tank and cooling system; B, Magelona johnstoni Berwick-upon-Tweed (NMW.Z. 2013.037.0001): live animal in capillary tube. Photo: A.S.Y. Mackie.

Figure 10 in Morphology, feeding and behaviour of British Magelona (Annelida: Magelonidae), with discussions on the form and function of abdominal lateral pouches

Figure 10. Abdominal posteriorly opening pouches from several specimens of Magelona johnstoni: A–B, initiation of new pouches represented by small 'holes' (lateral view) (A: NMW.Z.2013.037.0008e; B: NMW.Z.2013.037.0010d); C, first pouch (~6 chaetigers) from pygidium (lateral view) (NMW.Z.2013.037.0011d); D, first pouch from a regenerating tail (ventral/posterior view) (NMW.Z.2013.037.0008c); E, third pouch (~10 chaetigers) from pygidium (posterior view) (NMW.Z.2013.037.0011d); F, posteriorly opening pouch of an abdominal fragment (lateral posterior view) (NMW.Z.1998.028). Photos: K. Mortimer.

Figure 2 in Morphology, feeding and behaviour of British Magelona (Annelida: Magelonidae), with discussions on the form and function of abdominal lateral pouches

Figure 2. Magelona mirabilis Berwick-upon-Tweed (NMW.Z. 2013.037.0020): A, whole animal; B, anterior (ventral view); C, palp; D, prostomium (ventral view, showing mouth); E, posterior. All MgCl -relaxed. Photos: A.S.Y. Mackie.

Figure 6 in Morphology, feeding and behaviour of British Magelona (Annelida: Magelonidae), with discussions on the form and function of abdominal lateral pouches

Figure 6. In situ picture of the posterior thorax and anterior abdomen of living Magelona johnstoni (chaetigers 7–14, dorsal view).

Figure 9 in Morphology, feeding and behaviour of British Magelona (Annelida: Magelonidae), with discussions on the form and function of abdominal lateral pouches

Figure 9. Lateral view of Magelona johnstoni between chaetigers 9 (to the left of the picture) and chaetiger 11 (to the right), showing anteriorly opening abdominal pouches between chaetigers 10 and 11. Arrows indicate water flow around the pouches and lamellae, as observed during capillary tube experiments.

Figure 5 in Morphology, feeding and behaviour of British Magelona (Annelida: Magelonidae), with discussions on the form and function of abdominal lateral pouches

Figure 5. Magelona johnstoni Berwick-upon-Tweed: A, prostomium and first two chaetigers (ventral view), showing mouth surrounded by one upper (UL) and two lower lips (LL), and the proboscis (Pb, not everted) (NMW.Z.1999.021.0020a); B, papillae of mid-palp region (NMW.Z.2013.037.0008c); C, left-hand anteriorly opening pouch located between chaetigers 10 and 11 (lateral view, DF = dorsal flap, VF = ventral flap, LO = lateral organ, CM = convoluted membrane) (NMW.Z.2013.037.0011b); D, close-up view of convoluted membrane; E, transverse section through the body and anteriorly opening pouch situated between chaetigers 10 and 11 (posterior half of pouch and parapodia of chaetiger 11) (NotoL = notopodial lamellae, NeuroL = neuropodial lamellae) (NMW.Z.2013.037.0010c); F, anterior half of same pouch (NMW.Z.2013.037.0010b). Photos: K. Mortimer.

Figure 1 in Morphology, feeding and behaviour of British Magelona (Annelida: Magelonidae), with discussions on the form and function of abdominal lateral pouches

Figure 1. Magelona johnstoni Berwick-upon-Tweed (A, C, D, G: NMW.Z. 2013.037.0018; B: NMW.Z. 2013.037.0001; E, F: NMW.Z. 2013.037.0017; H: NMW.Z. 2013.037.0015): A, whole animal; B, anterior (dorsal view); C, anterior (ventral view); D, anterior (lateral view); E, palp; F, prostomium (ventral view, showing mouth); G, prostomium (ventral view, 'proboscis' everted); H, posterior section of female showing eggs. All MgCl -relaxed. Photos: A.S.Y. Mackie.

Figure 8 in Morphology, feeding and behaviour of British Magelona (Annelida: Magelonidae), with discussions on the form and function of abdominal lateral pouches

Figure 8. Showing two individuals of Magelona johnstoni simultaneously making lateral sinuous movements of the thorax (outside the burrow) (dorsal views).

Figure 4 in Morphology, feeding and behaviour of British Magelona (Annelida: Magelonidae), with discussions on the form and function of abdominal lateral pouches

Figure 4. Feeding in Magelona johnstoni: A, feeding position within the burrow (ventral view), indicating four zones where different methods are utilised to move food particles along the palp; B, looping of the palp at the surface (zone 1), in order to pass food particles along the palp (lateral view); C, similar process to that shown in B but utilising coiling of the palp (lateral view, papillae omitted for clarity); D, sequence showing the process of passing food particles from papillae to papillae along palp in zone 2; E, food particles being passed between papillae of both palps in zone 3; F, region where food particles are dropped towards mouth (ventral view) in zone 4.

FIGURE 4 in A further review of European Magelonidae (Annelida), including redescriptions of Magelona equilamellae and Magelona filiformis

FIGURE 4. Rose Bengal stained specimens of Magelona equilamellae from Ebro Delta, Catalonia, (A, D) Stn AT 5–2, 2008; (B, C, E) Stn AT 9–2, 2008: (A) anterior region (dorsal view, showing LH palp); (B) prostomium (antero-dorsal view, LH palp attached); (C) mid-palp region; (D) pygidium (ventro-lateral view, methyl green stained); (E) sediment covered, layered tube.

FIGURE 5 in A further review of European Magelonidae (Annelida), including redescriptions of Magelona equilamellae and Magelona filiformis

FIGURE 5. Scanning Electron Microscope images of Magelona equilamellae from Ebro Delta, Catalonia, (A–E) Stn AT 4–2, 2011 (specimen 3); (F) Stn AT 4–2, 2011 (specimen 1): (A) prostomium and first four chaetigers (dorso-lateral view); (B) LH parapodia of chaetigers 1–5 (lateral view); (C) RH parapodia of chaetigers 5–7 (lateral view); (D) RH parapodia of chaetigers 8–11; (E) RH parapodia of chaetigers 10–11; (F) tridentate abdominal hooded hooks from chaetiger 11 (lateral view, hoods broken). (No) Notopodium; (Ne) Neuropodium.

FIGURE 1 in A further review of European Magelonidae (Annelida), including redescriptions of Magelona equilamellae and Magelona filiformis

FIGURE 1. Magelona equilamellae, larger syntype (SMF 4675): (A) anterior (dorsal view); (B) prostomium (dorsal view, RH palp and tip of LH palp visible, both incomplete); (C–E, G, J, L, N, O, P) parapodia of chaetigers 1–3, 4, 6, 7, 8, 9 and 11 respectively (anterior views); (F, H, K) neuropodial lamellae of chaetigers 3, 4 and 6 respectively (ventral views); (I) notopodia of chaetiger 5 (anterior view, neuropodia damaged on both sides); (M) neuropodial lamella of chaetiger 7 (dorsal view); (Q) notopodial lamella of chaetiger 20 (anterior view); (R, S) tridentate abdominal hooded hooks (oblique lateral and lateral view respectively).

FIGURE 3 in A further review of European Magelonidae (Annelida), including redescriptions of Magelona equilamellae and Magelona filiformis

FIGURE 3. Magelona equilamellae from Ebro Delta, Catalonia, east coast of Spain reported in Capaccioni-Azzati (1987; 1989), (A, B) Stn I–1 AH; (C, D) Stn E–3 AH: (A) anterior, showing pigment band of the posterior thorax between chaetigers 5–7 (dorso-lateral view); (B) prostomium and first three chaetigers (lateral view); (C, D) anterior (dorso-lateral and ventro-lateral views respectively, left hand palp retained).

FIGURE 7 in Magelonidae (Polychaeta) from the Arabian Peninsula: a review of known species, with notes on Magelona tinae from Thailand

FIGURE 7. Magelona heteropoda (Holotype, BMNH:ZB.1971.54) medial fragment, ventral view, showing convoluted posteriorly open pouch; eggs apparent.

FIGURE 6 in Magelonidae (Polychaeta) from the Arabian Peninsula: a review of known species, with notes on Magelona tinae from Thailand

FIGURE 6. Magelona heteropoda (Holotype, BMNH:ZB.1971.54) A, prostomium, dorsal view; B, posterior region, dorsal view, interparapodial glandular areas marked; C, pygidium, ventral view, showing one anal cirrus; D, tridentate abdominal hooded hook, lateral, oblique view; E, venter between chaetigers 7 and 8 (chaetiger 7 left previously dissected), showing conspicuous ventral swellings; F, chaetiger 10, anterior view.

FIGURE 2 in Magelonidae (Polychaeta) from the Arabian Peninsula: a review of known species, with notes on Magelona tinae from Thailand

FIGURE 2. Magelona obockensis (A–F from 36 chaetiger anterior fragment, proboscis everted, right–hand palp retained, left–hand side damaged between chaetigers 12–18; G–M from 26 chaetiger anterior fragment, proboscis not everted, left–hand palp retained; Syntypes, MNHN Type 1357) A–D, chaetigers 1, 2, 4 and 5 respectively (anterior views); E, neuropodial lamellae from chaetiger 5, dorsal view; F, chaetiger 7, anterior view; G–H, chaetigers 6 and 8 (anterior views); I, neuropodia from chaetiger 8, lateral view; J–K, chaetigers 9 and 10 (anterior views); L, postchaetal expansion of abdominal lamella (hooks omitted for clarity); M, chaetiger 16 (anterior view).

FIGURE 11 in Magelonidae (Polychaeta) from the Arabian Peninsula: a review of known species, with notes on Magelona tinae from Thailand

FIGURE 11. Magelona tinae (Paratype, PMBC 3180) A, anterior region, dorsal view, methyl green staining pattern shown; B, chaetiger 1, anterior view; C, neuropodium of chaetiger 1, dorsal view; D–I, chaetigers 3, 6, 7, 8, 9 & 10 respectively (anterior views); J, venter between chaetigers 7 and 9, showing ventral markings; K, mucronate chaeta from chaetiger 9, L–M, tridentate abdominal hooded hooks, frontal, lateral oblique views respectively (hoods omitted for clarity).

FIGURE 1 in Magelonidae (Polychaeta) from the Arabian Peninsula: a review of known species, with notes on Magelona tinae from Thailand

FIGURE 1. Magelona obockensis (A–F, H–I from 39 chaetiger anterior fragment, proboscis not everted, both palps attached; G from posterior fragment; J–L from medial fragment; Syntypes, MNHN Type 1357) A, anterior region, dorsal view; B, prostomium, dorsal view; C–F, chaetigers 2, 3, 4 and 9 respectively (anterior views); G, posterior region, dorsal view; H, mucronate chaeta from inner chaetal margin of chaetiger 9, lateral view; I, same, from outer margin; J–L, tridentate abdominal hooded hooks, frontal, lateral and oblique views respectively (K—hood omitted for clarity).

FIGURE 10 in Magelonidae (Polychaeta) from the Arabian Peninsula: a review of known species, with notes on Magelona tinae from Thailand

FIGURE 10. Magelona pulchella (Holotype, BMNH:1969.391) A–C, methyl green staining patterns; A, anterior, dorsal view; B, anterior, ventral view; C, venter, between chaetigers 4 and 5.