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Fig. 11 in Distribution and diversity of the Opheliidae (Annelida, Polychaeta) on the continental shelf and slope of Iceland, with a review of the genus Ophelina in northeast Atlantic waters and description of two new species

Fig. 11 Ophelina helgolandica Augener (IMNH 24329, BIO- ICE sample 2579). a Anterior end, lateral view. b Detail of nuchal organ. c First chaetiger. d Chaetigers 2–3. e Last branchiate chaetiger; arrow marks position of lateral organ. f Posterior body region, lateral view; arrow marks position of last branchiate chaetiger followed by three abranchiate chaetigers. Scale bars: (a, f) 1 mm; (b, c, e), 100 μm; (d) 200 μm

Fig. 9 in Distribution and diversity of the Opheliidae (Annelida, Polychaeta) on the continental shelf and slope of Iceland, with a review of the genus Ophelina in northeast Atlantic waters and description of two new species

Fig. 9 Posterior body region in some Atlantic Ophelina species (redrawn from originals). a O. abranchiata (from Støp-Bowitz 1948). b O. bowitzi sp. nov. (from Fauvel 1914, as A. arctica). c O. delapidans longicephala (from HartmannSchröder 1977). d O. groenlandica (from Støp-Bowitz 1948). e O. helgolandica (from Augener 1912). f O. norvegica (from Støp-Bowitz 1945). g O. nybelini (from Eliason 1951)

Fig. 8 in Distribution and diversity of the Opheliidae (Annelida, Polychaeta) on the continental shelf and slope of Iceland, with a review of the genus Ophelina in northeast Atlantic waters and description of two new species

Fig. 8 Ophelina basicirra sp. nov. (Paratypes, IMNH 24318, BIOICE sample 2303). a, b Posterior end with anal tube, lateral views. c, d Cirri of anal tube. e Anal tube, ventral view. f Detail of anal cirrus of anal tube. Scale bars: (a, b) 300 μm; (c) 90 μm; (d) 50 μm; (e) 200 μm; (f) 60 μm

Fig. 1 in Distribution and diversity of the Opheliidae (Annelida, Polychaeta) on the continental shelf and slope of Iceland, with a review of the genus Ophelina in northeast Atlantic waters and description of two new species

Fig. 1 Maps of the study area and collecting sites of samples including specimens of Opheliidae. a All samples combined. b Ammotrypanella cf. arctica McIntosh. c Ophelina basicirra sp. nov. d Ophelina bowitzi sp. nov

opennotspecifiedMar 2004View details →

FIGURES 1–3 in Two new species of Opheliidae (Annelida: Polychaeta): Euzonus papillatus sp. n. from a northeastern Brazilian sandy beach and Euzonus mammillatus sp. n. from the continental shelf of southeastern Brazil

FIGURES 1–3. Euzonus papillatus sp. n., NE Brazil: 1. Holotype (MCEM 1617), right lateral view, posterior end contracted, sand grains visible; 2. paratype (MCEM 1620), left lateral view of extended posterior end, real length of chaetae not shown; 3. holotype, detail of subterminal region of chaetae of abranchiate posterior chaetigers showing knob (arrows).

opennotspecifiedMar 2004View details →

FIGURES 4–7 in Two new species of Opheliidae (Annelida: Polychaeta): Euzonus papillatus sp. n. from a northeastern Brazilian sandy beach and Euzonus mammillatus sp. n. from the continental shelf of southeastern Brazil

FIGURES 4–7. Euzonus mammillatus sp. n., specimen from SE Brazil, Rio de Janeiro State, from Nonato (1981): 4. right lateral view of whole body; 5. details of lateral papillae on chaetiger 10 and branchiae; 6. posterior end, dorsal view; 7. posterior end, ventral view.

opennotspecifiedMar 2008View details →

Figure 1 in New polychaete (Annelida) records and a new species from Hong Kong: the families Polynoidae, Sigalionidae, Chrysopetalidae, Pilargiidae, Nereididae, Opheliidae, Ampharetidae and Terebellidae

Figure 1. Sigambra papagayu sp. nov., holotype: A, anterior end, dorsal; B, anterior end, ventral; C, pygidium, dorsal; D, 40th parapodium; E, detail of, from left to right, serrate capillary neurochaeta, pectinate chaeta and tip of neuroaciculum. Scale line51 mm for A to C, 0.3 mm for D.

FIG. 9 in Description of a new species of Armandia (Polychaeta: Opheliidae) from western Kyushu, Japan, with character variations

FIG. 9. Armandia amakusaensis sp. nov. (A) Relationship between total number of analfunnel papillae and total body length; (B) frequency distribution of total number of anal-funnel papillae.

FIG. 1 in Description of a new species of Armandia (Polychaeta: Opheliidae) from western Kyushu, Japan, with character variations

FIG. 1. Sampling sites for Armandia amakusaensis sp. nov. specimens on two intertidal sandy habitats facing Tomioka Bay in western Kyushu, Japan.

FIG. 5 in Description of a new species of Armandia (Polychaeta: Opheliidae) from western Kyushu, Japan, with character variations

FIG. 5. Armandia amakusaensis sp. nov. (A) Variation in distribution pattern of posterior abranchiate setigers. In the column at each total number of setigers, the portions which specimens with respective last branchiate setigers occupy are indicated; (B) frequency distribution of number of posterior abranchiate setigers, 0±4, derived from (A).

FIG. 2 in Description of a new species of Armandia (Polychaeta: Opheliidae) from western Kyushu, Japan, with character variations

FIG. 2. Schematic representation of selected constituent parts of the body of Armandia amakusaensis sp. nov., showing parts measured for dimensions (for de®nitions and measurement methods, see Material and methods). (A) Total body length; (B) prostomium length; (C) body height; (D) body width (shaded part 5 ventral groove); (E) dorsal length of anal funnel; (F) ventral length of anal funnel; (G) length of last three setigers; (H) length of last four setigers; (I) length of anal-funnel papillae; (J) length of long cirrus. The superscripts * and ** denote the length along a curve and that on a straight line, respectively.

FIG. 8 in Description of a new species of Armandia (Polychaeta: Opheliidae) from western Kyushu, Japan, with character variations

FIG. 8. Armandia amakusaensis sp. nov. Relationships between ventral length of anal funnel and (A) length of last three setigers, (B) length of last four setigers and (C) dorsal length of anal funnel. A straight line of 45ss inclination indicates the same values of the two parameters.

FIG. 4 in Description of a new species of Armandia (Polychaeta: Opheliidae) from western Kyushu, Japan, with character variations

FIG. 4. Armandia amakusaensis sp. nov. (A) Body-size (total body length) frequency distribution; (B) relationship between total number of setigers and total body length. N, total number of specimens; n, number of specimens with each total number of setigers.

FIG. 7 in Description of a new species of Armandia (Polychaeta: Opheliidae) from western Kyushu, Japan, with character variations

FIG. 7. Armandia amakusaensis sp. nov. Relationship between total body length and each of three dimensions related to anal funnel: (A) ventral length of anal funnel; (B) mean length of anal-funnel papillae; (C) length of long unpaired cirrus. In (B) and (C) the specimens are subdivided into two groups (open circles and solid diamonds) at an intermediate total body length of 16.5 mm.

FIG. 3 in Description of a new species of Armandia (Polychaeta: Opheliidae) from western Kyushu, Japan, with character variations

FIG. 3. Armandia amakusaensis sp. nov. (NSMT-Pol.H-360). (A) Lateral view of entire animal; (B, C) lateral and dorsal views of anterior end; (D) lateral view of setigers 5±8; (E) lateral view of parapodium from setiger 5; (F) lateral view of parapodium from setiger 16; (G) lateral view of parapodium from setiger 27; (H) capillary seta from notosetae of parapodium 16; (I, J, K) lateral, dorsal and ventral views of posterior end, respectively, with arrow in (J) indicating tip of V-shaped incision.

FIGURE 14 in A new species of Polyophthalmus (Annelida, Opheliidae) from the Arabian Gulf with an insight on internal anatomy and diversity of the genus

FIGURE 14. Reports of Polyophthalmus pictus Dujardin, 1839 from the Indian Ocean and West Pacific Ocean.

FIGURE 12 in A new species of Polyophthalmus (Annelida, Opheliidae) from the Arabian Gulf with an insight on internal anatomy and diversity of the genus

FIGURE 12. Stereomicrographs of fixed specimens identified as Polyophthalmus pictus (Dujardin, 1839) from the coast of Spain. (A) midbody chaetigers, lateral view (three specimens, MNCN 16.01/9398; Almería, Mediterranean coast); (B–C) midbody region and posterior end, lateral view (same specimen, MNCN 16.01/19100; Galicia, Atlantic coast); (D–E) posterior end, lateral view (two specimens, MNCN 16.01/13213; Cantabria, Atlantic coast).

FIGURE 11 in A new species of Polyophthalmus (Annelida, Opheliidae) from the Arabian Gulf with an insight on internal anatomy and diversity of the genus

FIGURE 11. Polyophthalmus zhadanae sp. nov. Micro-CT images of a specimen from Abu Ali (paratype SMF30263). (A) 3D sagittal section; (B–E) 3D frontal sections of (A) at several levels. Abbreviations: adbv—antero-dorsal blood vessel/s; bc—body cavity; br—brain; brn—brain nerves; dbv—dorsal blood vessel; dlml—dorsal longitudinal muscle layer; norm—nuchal organ retractor muscle; nuo—nuchal organ; obm—oblique muscles; oes—oesophagus; ppabv—prostomial papilla blood vessel; pr— prostomium; prb—proboscis; prm—proboscis retractor muscle/s; prpr—proboscis posterior region; vlml—ventral longitudinal muscle layer.

FIGURE 10 in A new species of Polyophthalmus (Annelida, Opheliidae) from the Arabian Gulf with an insight on internal anatomy and diversity of the genus

FIGURE 10. Polyophthalmus zhadanae sp. nov. Micro-CT images of a specimen from sample P12977 (paratype MNCN 16.01/19119). (A) anterior end, 3D frontal view; (B–E) prostomium, 3D transverse sections; (F) anterior end, 3D transverse section. Abbreviations: adbv—antero-dorsal blood vessel/s; br—brain; dlml—dorsal longitudinal muscle layer; norm—nuchal organ retractor muscle; nuo—nuchal organ; obm—oblique muscles; oes—oesophagus; ppa—prostomial papilla; ppabr— prostomial papilla blood ring; ppabv—prostomial papilla blood vessel; prb—proboscis; sto—stomach; stobpl—stomach blood plexus; vlbv—ventral longitudinal blood vessel; vlml—ventral longitudinal muscle layer; vnc—ventral nerve cord.

FIGURE 8 in A new species of Polyophthalmus (Annelida, Opheliidae) from the Arabian Gulf with an insight on internal anatomy and diversity of the genus

FIGURE 8. Polyophthalmus zhadanae sp. nov. Micro-CT images of internal anatomy. (A) anterior end, 3D sagittal section (sample P13063; paratype MNCN 16.01/19115); (B) anterior end, 2D sagittal section (sample P12629; paratype MNCN 16.01/19102); (C) anterior end, 2D frontal section (sample P12629; paratype MNCN 16.01/19102). Abbreviations: adbv— antero-dorsal blood vessel/s; bc—body cavity; bcc—buccal cavity; bo—buccal opening; br—brain; nuo—nuchal organ; obm— oblique muscles; oes—oesophagus; po—proboscis opening; ppa—prostomial papilla; pr—prostomium; prb—proboscis; sep— septum; sto—stomach; vlml—ventral longitudinal muscle layer.