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Arabella (Arabella) iricolor, fixed specimen. A Whole body, dorsal view, arrow point to maxillae and carriers B Anterior end, ventral view, arrow point to mandibles C Posterior end, dorsal view. Scale bars: 0.5 mm (A, B), 0.3 mm (C).
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Nephtys simoni, fixed specimen. A Whole body, dorsal view B Anterior end, dorsal view C Posterior end, dorsal view. Scale bars: 0.5 mm.
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Alitta succinea, fixed specimen. A Anterior end, dorsal view B Posterior end, dorsal view. Scale bars: 0.5 mm.
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Namalycastis fauveli, fixed specimen, NPM-Pol 883. A Whole body, dorsal view B Anterior end, dorsal view C Posterior end, ventral view D Neurochaetae supra-acicular, 10th chaetiger E Neurochaeta spiniger supra-acicular, 10th chaetiger. Scale bars: 0.5 mm (A–C), 0.01 mm (D, E).
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Namalycastis geayi, fixed specimen, NPM-Pol 882 and 884. A Anterior end, dorsal view B Parapodia sub-birramous, anterior region, dorsal view C Supra-acicular spiniger, arrow point to fine serrations proximally to the base of chaetae blades, parapodium 17, dorsal view of chaetae. Scale bars: 0.2 mm (A), 0.05 mm (B), 0.01 mm (C).
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Namalycastis senegalensis, fixed specimen, NPM-Pol 105. A Anterior end, dorsal view B Parapodia of 10th chaetiger, anterior view C Sub-acicular neurochaetae spiniger of 10th chaetiger D Sub-acicular neurochaeta falciger of 10th chaetiger. Scale bars: 2.3 mm (A), 0.2 mm (B), 0.02 mm (C, D).
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Pilargidae species. A Sigambra bassi, whole body, dorsal view B Sigambra grubii, whole body, dorsal view. Scale bars: 0.5 mm.
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Exogone (Exogone) breviantennata. A Whole body, dorsal view B Anterior end, dorsal view. Abbreviations: pa, palps; ey, eye; pv, proventricle. Scale bars: 0.15 mm.
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Isolda pulchella. A Whole body, dorsolateral view B Anterior end, dorsal view C Pygidium, ventral view. Scale bars: 0.5 mm.
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Capitellidae species. A Capitella capitata complex, whole body, lateral view and B anterior view, arrow point genital spines in 9th chaetiger C Heteromastus filiformis, thoracic region, lateral view D Mediomastus californiensis, thoracic region, lateral view. Scale bars: 0.5 mm.
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Paraonis amazonica sp. n., fixed specimen, NPM-Pol 906. A Whole body, lateral view B Anterior end, dorsal view C Posterior end, dorsal view D Anterior end, the arrow indicates foliaceous branchiae, dorsolateral view. Scale bars: 0.5 mm (A), 0.1 mm (B) 0.25 mm (C, D).
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Paraonis amazonica sp. n., SEM. A Anterior end, arrow point to the nuchal organ, dorsal view B Anterior parapodium of chaetiger 3, arrow point to the acicular lateral spine, dorsal view C Parapodium of setiger 35, acicular chaeta with a lateral spine (sl) hook-shaped chaeta with a terminal spine (st) D Acicular chaeta with a lateral spine enlarged. Scale bars: 0.1 mm (A), 20 µm (B), 10 µm (C), 1 µm (D).
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Paraonis amazonica sp. n., chaetae. A Acicular chaetae with a lateral spine of anterior setiger 3 B Posterior hook-shaped chaeta with terminal spine and acicular chaetae with a lateral spine (left) in setiger 30 C Hook-shaped chaeta with a terminal spine in the last setiger, 36 D Pygidium with three anal cirri, ventral view. Scale bars 50 µm (A–C), 0.25 mm (D).