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FIG. 54 in Revision of Hesione Savigny in Lamarck, 1818 (Annelida, Errantia, Hesionidae)

FIG. 54. — Hesione splendida Savigny in Lamarck, 1818, non-type specimen, UF 46: A, anterior region, dorsal view; B, prostomium, dorsal view (arrows point to antennae); C, chaetiger 2, right parapodium, anterior view, an oocyte released (inset: acicular lobe); D, chaetiger 6, right parapodium, anterior view, oocytes inside parapodial coelom (inset: acicular lobe); E, neurochaetal blades, left one from chaetiger 2, others from chaetiger 6 (insets: close-up of tips); F, posterior region, dorsal view. Scale bars: A, 2 mm; B, 0.3 mm; C, 0.4 mm; D, 0.7 mm; E, 60 µm; F, 0.5 mm.

FIG. 53 in Revision of Hesione Savigny in Lamarck, 1818 (Annelida, Errantia, Hesionidae)

FIG. 53. — Hesione splendida Savigny in Lamarck, 1818, syntypes of H. ehlersi Gravier,1900, MNHN-IA-TYPE0287: A, largest syntype, anterior region, dorsal view; B, same, anterior end, dorsal view; C, second largest syntype, anterior region, dorsal view; D, same, anterior end, dorsal view; E, largest syntype, chaetiger 9, left parapodium, anterior view (inset: acicular lobe); F, same, chaetiger 10, left parapodium, anterior view (inset: acicular lobe, folded); G, same, neurochaetae (insets: blade tips). Scale bars: A, 1 mm; B, D, E, 0.5 mm; C, 1.4 mm; F, 0.3 mm; G, 0.2 mm.

FIG. 52 in Revision of Hesione Savigny in Lamarck, 1818 (Annelida, Errantia, Hesionidae)

FIG. 52. — Hesione splendida Savigny in Lamarck, 1818, lectotype, MNHN-IA-TYPE-140: A, dorsal view, note the longitudinal eccentric dissection; B, anterior region, dorsal view; C, chaetiger 8, right parapodium, anterior view (insets: close-ups of acicular lobe and tips of blades); D, posterior region, oblique dorsal view. Scale bars: A, 2.3 mm; B, 1.7 mm; C, 0.2 mm; D, 1 mm.

FIG. 48 in Revision of Hesione Savigny in Lamarck, 1818 (Annelida, Errantia, Hesionidae)

FIG. 48. — Hesione sicula delle Chiaje, 1830, reinst., neotype, ZMB 7529: A, anterior region, dorsal view; B, prostomium and everted pharynx, dorsal view (arrow points to right lateral antenna); C, chaetiger 9, left parapodium, anterior view (inset: acicular lobe); D, same, lower half of neurochaetal bundle (insets: blades); E, posterior region, dorsal view. Scale bars: A, E, 1.8 mm; B, 0.9 mm; C, 0.5 mm; D, 80 µm.

FIG. 46 in Revision of Hesione Savigny in Lamarck, 1818 (Annelida, Errantia, Hesionidae)

FIG. 46. — Hesione praetexta Ehlers, 1887: A, parapodium from a middle-body segment; B, same, tip of neurochaetal tip (modif. after Ehlers, 1887, scale bars missing in original).

FIG. 51 in Revision of Hesione Savigny in Lamarck, 1818 (Annelida, Errantia, Hesionidae)

FIG. 51. — Hesione sicula delle Chiaje, 1830, reinst., non-type specimens, MNHN IA-PNT-106 (formerly jar de Saint-Joseph 20): A, complete, oblique dorsal view; B, anterior region, pharynx exposed, dorsal view; C, prostomium and base of pharynx, dorsal view (arrows point to left lateral antennae, asterisk indicates dorsal papilla); D, another specimen, prostomium and base of pharynx, dorsal view (asterisk indicates dorsal papilla); E, another specimen, posterior region, dorsal view. Scale bars: A, 4 mm; B, 2.4 mm; C, 0.5 mm; D, 0.4 mm; E, 1.8 mm.

FIG. 41 in Revision of Hesione Savigny in Lamarck, 1818 (Annelida, Errantia, Hesionidae)

FIG. 41. — Hesione picta Müller, 1858, non-type specimen, ECOSUR OH 468: A, anterior region, dorsal view; B, posterior region, dorsal view; C, head, close-up, dorsal view; D, pygidium, close-up, dorsal view; E, anterior region, ventral view; F, chaetiger 8, left parapodium, anterior view (insets upper and lower neurochaetal blades). Scale bars: A, 1.5 mm; B, 2 mm; C, D, 0.6 mm; E, 1.1 mm; F, 0.7 mm.

FIG. 55. — Hesione uchidai n in Revision of Hesione Savigny in Lamarck, 1818 (Annelida, Errantia, Hesionidae)

FIG. 55. — Hesione uchidai n. sp., holotype, UF 4384: A, alive, dorsal view; B, anterior body half, dorsal view, pharynx exposed; C, prostomium and basal pharynx ring, prostomium slightly oblique, bent dorsally (arrows point to antennae, asterisk indicates dorsal papilla); D, chaetiger 7, left parapodium, anterior view (inset: acicular lobe); E, same, neurochaetae (insets: blades); F, chaetiger 12, left parapodium, anterior view; G, same, neurochaetae (insets: blades). Scale bars: A, 2.2 mm, B, 2 mm; C, D, 0.3 mm; E, 150 µm; F, 0.5 mm; G, 230 µm.

FIG. 38. — Hesione paulayi n in Revision of Hesione Savigny in Lamarck, 1818 (Annelida, Errantia, Hesionidae)

FIG. 38. — Hesione paulayi n. sp., anterior region of three different specimens, arranged in a progressive reduction of the discontinuous band in chaetiger 3: A, paratype, Papua New Guinea, UF 5845; B, non-type specimen, Society Islands, Moorea, UF 887; C, non-type specimen, Eastern Australia, AMNH 31859. Scale bars: A, 1.1 mm; B, 0.8 mm; C, 1.2 mm.

FIG. 30 in Revision of Hesione Savigny in Lamarck, 1818 (Annelida, Errantia, Hesionidae)

FIG. 30. — Hesione pacifica McIntosh, 1885, holotype, BMNH 85.12.1.136: A, anterior region, dorsal view; B, prostomium, dorsal view (arrows point to antennae); C, chaetiger 15, right parapodium, anterior view (inset: neurochaetal remains); D, posterior region, dorsal view; E, same, close-up of pygidium. Scale bars: A, 1 mm; B, 0.2 mm; C, E, 0.3 mm; D, 0.9 mm.

FIG. 20. — Hesione helenensis n in Revision of Hesione Savigny in Lamarck, 1818 (Annelida, Errantia, Hesionidae)

FIG. 20. — Hesione helenensis n. sp., holotype, USNM 33148: A, anterior region, dorsal view, pharynx partially exposed; B, prostomium, dorsal view (arrow points to left antenna); C, chaetiger 9, left parapodium, anterior view (insets: acicular lobe and bases of cirrostyles); D, same, neurochaetae (insets: blades); E, posterior region, dorsal view. Scale bars: A, 1.7 mm; B, 0.2 mm; C, 0.5 mm; D, 160 µm; E, 1.8 mm.

FIG. 1 in Revision of Hesione Savigny in Lamarck, 1818 (Annelida, Errantia, Hesionidae)

FIG. 1. — Range variation of neurochaetal blades length: width ratios in three chaetigers (3, 7, 9), observed in two different Hesione Savigny in Lamarck, 1818 species: A, H. picta Müller, 1858 from Florida (18 mm: UF 825, 26 mm: UF 826, 32 mm: UF 1593); B, H. praetexta Ehlers, 1887 from Florida (22 mm: UF 1060, 32 mm: UF 1064, 54 mm: UF 2574).

Fig. 13 in Reinstatement of Perinereis bairdii (Webster, 1884) and description of P. websteri sp. nov. from Bermuda, including the reproductive morphology of two Atlantic Perinereis species (Annelida: Errantia: Phyllodocida)

Fig. 13. Arrangement of paragnaths in the ridge and furrow regions of areas VII–VIII in species of Perinereis Kinberg, 1865. Filled figures with solid edges represent paragnaths observed in all specimens examined, no-filled figures with dashed edges represent paragnaths observed in some specimens only.

Fig. 12 in Reinstatement of Perinereis bairdii (Webster, 1884) and description of P. websteri sp. nov. from Bermuda, including the reproductive morphology of two Atlantic Perinereis species (Annelida: Errantia: Phyllodocida)

Fig. 12. Perinereis cariboea De León-González & Solís-Weiss, 1998. Non-types (ECOSUR P3209). A. Whole specimen, dorsal view. B. Anterior end, dorsal view. C. Anterior end, dorsal view. D. Same, ventral view. E. Chaetiger 2, right parapodium. F. Chaetiger 6, right parapodium. G. Chaetiger 12, right parapodium. H. Chaetiger 14, right parapodium. I. Chaetiger 18, right parapodium. J. Chaetiger 35, right parapodium in anterior (left) and posterior (right) views. Scale bars: A = 5 mm; B–D = 1 mm; E = 0.25 mm; F–J = 0.5 mm.

Fig. 11 in Reinstatement of Perinereis bairdii (Webster, 1884) and description of P. websteri sp. nov. from Bermuda, including the reproductive morphology of two Atlantic Perinereis species (Annelida: Errantia: Phyllodocida)

Fig. 11. Perinereis floridana (Ehlers, 1868). Non-types (ECOSUR P1100). A. Anterior end, dorsal view. B. Posterior end, dorsal view. C. Chaetiger 2, right parapodium. D. Chaetiger 10, right parapodium. E. Chaetiger 28, right parapodium. F. Chaetiger 61, right parapodium. G. Chaetiger 91, right parapodium. H. Left jaw, dorsal view. I. Supra-acicular heterogomph falciger, chaetiger 61. J. Subacicular heterogomph falciger, chaetiger 61. K. Sub-acicular heterogomph spiniger, chaetiger 61. L. Supra-acicular homogomph spiniger, chaetiger 61. Scale bars: A–B = 1 mm; C–H = 0.25 mm; I–J = 10 μm; K–L = 50 μm.

Fig. 10 in Reinstatement of Perinereis bairdii (Webster, 1884) and description of P. websteri sp. nov. from Bermuda, including the reproductive morphology of two Atlantic Perinereis species (Annelida: Errantia: Phyllodocida)

Fig. 10. Perinereis floridana (Ehlers, 1868). Syntypes of Nereis floridana (MCZ ANNa-119). A. Whole specimen, dorsal view. B. Anterior end, dorsal view. C. Pharynx, dorsal view. D. Pharynx, ventral view. E. Supra-acicular heterogomph falciger, chaetiger 6. F. Supra-acicular heterogomph falciger, chaetiger 17. G. Sub-acicular heterogomph falciger, chaetiger 6. H. Sub-acicular heterogomph falciger, chaetiger 17. I. Chaetiger 2, right parapodium. J. Chaetiger 6, right parapodium. K. Chaetiger 10, right parapodium. L. Chaetiger 17, right parapodium. M. Chaetiger 18, right parapodium. N. Chaetiger 40, right parapodium. O. Chaetiger 95, right parapodium. Scale bars: A = 2 mm; B = 1 mm; C–D = 0.5 mm; E–H = 10 μm; I–O = 0.2 mm.

Fig. 9 in Reinstatement of Perinereis bairdii (Webster, 1884) and description of P. websteri sp. nov. from Bermuda, including the reproductive morphology of two Atlantic Perinereis species (Annelida: Errantia: Phyllodocida)

Fig. 9. Perinereis websteri sp. nov. A–G, I–N. Holotype (USNM 1490807). H. Paratype (USNM 1490809). A. Chaetiger 2, right parapodium. B. Chaetiger 10, right parapodium. C. Chaetiger 31, right parapodium. D. Chaetiger 50, right parapodium. E. Chaetiger 70, right parapodium. F. Chaetiger 75, right parapodium. G. Chaetiger 82, right parapodium. H. Chaetiger 100, right parapodium. I. Right jaw, dorsal view. J. Supra-acicular heterogomph falciger, chaetiger 31. K. Supra-acicular heterogomph falciger, chaetiger 75. L. Sub-acicular heterogomph falciger, chaetiger 31. M. Sub-acicular heterogomph falciger, chaetiger 75. N. Sub-acicular heterogomph falciger, chaetiger 82. Scale bars: A–F, H = 0.2 mm; G, I = 0.1 mm; J–N = 10 μm.

Fig. 8 in Reinstatement of Perinereis bairdii (Webster, 1884) and description of P. websteri sp. nov. from Bermuda, including the reproductive morphology of two Atlantic Perinereis species (Annelida: Errantia: Phyllodocida)

Fig. 8. Perinereis websteri sp. nov. A, F–G. Holotype (USNM 1490807). B–C, H. Paratype (USNM 1490809). D–E. Non-type (USNM 14900805). A. Whole specimen, dorsal view. B. Pharynx, dorsal view. C. Same, ventral view. D. Pharynx, dorsal view. E. Same, ventral view. F. Anterior end, dorsal view. G. Posterior end, dorsal view. H. Pharynx, ventral view. Scale bars: A = 1.5 mm; B–H = 1 mm.

Fig. 6 in Reinstatement of Perinereis bairdii (Webster, 1884) and description of P. websteri sp. nov. from Bermuda, including the reproductive morphology of two Atlantic Perinereis species (Annelida: Errantia: Phyllodocida)

Fig. 6. Perinereis bairdii (Webster, 1884). Topotype male (USNM 1480197). A. Right jaw, dorsal view. B. Chaetiger 2, left parapodium. C. Chaetiger 3, left parapodium. D. Chaetiger 7, left parapodium. E. Chaetiger 10, left parapodium. F. Chaetiger 14, left parapodium. G. Chaetiger 15, left parapodium. H. Chaetiger 30, left parapodium. I. Chaetiger 50, left parapodium. J. Chaetiger 72, left parapodium. Scale bars: A–B, J = 0.1 mm; C–I = 0.2 mm.

Fig. 7 in Reinstatement of Perinereis bairdii (Webster, 1884) and description of P. websteri sp. nov. from Bermuda, including the reproductive morphology of two Atlantic Perinereis species (Annelida: Errantia: Phyllodocida)

Fig. 7. Perinereis websteri sp. nov. Non-types (USNM 1660577, from syntype series of Nereis bairdii Webster, 1884). A. Anterior end, dorsal view. B. Anterior end, dorsal view. C. Pharynx, dorsal view. D. Same, ventral view. E. Chaetiger 10, left parapodium. F. Chaetiger 43, left parapodium. G. Chaetiger 69, left parapodium. H. Chaetiger 84, left parapodium. Scale bars: A–B = 1 mm; C–D = 0.5 mm; E–G = 0.2 mm; H = 0.1 mm.