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FIGURE 9. Onuphis pancerii. Neotype A, B in Hidden diversity within the polychaete Onuphis eremita sensu lato (Annelida: Onuphidae) — redescription of O. eremita Audouin & Milne-Edwards, 1833 and reinstatement of Onuphis pancerii Claparède, 1868

FIGURE 9. Onuphis pancerii. Neotype A, B (MNCN 16.01/311), specimen from Santander Bay C (AM W 46620), specimen from McIntosh collection D (BMNH 1921.5.1.832-34), specimens from Naples E (BMNH 1923.11.19.25-8). Photomicrographs. A, C, D detailed view of anterior end, dorsal view; B, E anterior part of whole specimens showing colour pattern, dorsal view.

FIGURE 8 in Hidden diversity within the polychaete Onuphis eremita sensu lato (Annelida: Onuphidae) — redescription of O. eremita Audouin & Milne-Edwards, 1833 and reinstatement of Onuphis pancerii Claparède, 1868

FIGURE 8. Distribution map of confirmed occurrences of Onuphis eremita and Onuphis pancerii. Squares, O. eremita localities; circles, O. pancerii localities.

FIGURE 7. Onuphis eremita. Scanning electron micrographs. A in Hidden diversity within the polychaete Onuphis eremita sensu lato (Annelida: Onuphidae) — redescription of O. eremita Audouin & Milne-Edwards, 1833 and reinstatement of Onuphis pancerii Claparède, 1868

FIGURE 7. Onuphis eremita. Scanning electron micrographs. A, detailed view of the ectosymbiont peritrich Epistylis sp. on anterior parapodia; B, intracoelomic developing oocytes; C, detailed view of immature oocyte with nurse cells attached; D–E, spermatozoa protruding from openings of the body wall; F, detailed view of spermatozoon, lateral view; G, detailed view of spermatozoon, frontal view. H–I, detailed view of spermatozoon, posterior view; a, acrosome; c, corona of cilia; f, flagellum; m, mitochondria; n, nucleus; nc, nurse cells; o, oocyte; p, peduncle; r, ring.

FIGURE 10 in Hidden diversity within the polychaete Onuphis eremita sensu lato (Annelida: Onuphidae) — redescription of O. eremita Audouin & Milne-Edwards, 1833 and reinstatement of Onuphis pancerii Claparède, 1868

FIGURE 10. Onuphis pancerii. Specimens from Santander Bay (MNCN 16.01/15348, MNCN 16.01/15350). Scanning electron micrographs. A, anterior end, dorsal view; B, anterior end, ventral view; C, anterior end, lateral view; D, detailed view of antennal ceratophores; E, detailed view of scattered sensory buds of antenna; F, parapodium chaetiger 2, lateral view; G, detailed view of chaetigers 5 to 7, lateral view, arrows point to interramal papillae; b, branchia; ch, chaetiger; dc, dorsal cirrus; gp, glandular pad; p, interramal papilla; pol, postchaetal lobe; prl, prechaetal lobe; vc, ventral cirrus.

FIGURE 6 in Hidden diversity within the polychaete Onuphis eremita sensu lato (Annelida: Onuphidae) — redescription of O. eremita Audouin & Milne-Edwards, 1833 and reinstatement of Onuphis pancerii Claparède, 1868

FIGURE 6. Graphs illustrating size-related features in Onuphis eremita. A, relationship between body width of specimens and number of ceratophoral rings on antenna (N = 30); B, relationship between body width of specimens and maximal number of branchial filaments (N = 30); C, relationship between body width of specimens and origin of subacicular hooks (N = 30); D, relationship between body width of specimens and origin of multifilamentous branchia (N = 30).

FIGURE 5 in Hidden diversity within the polychaete Onuphis eremita sensu lato (Annelida: Onuphidae) — redescription of O. eremita Audouin & Milne-Edwards, 1833 and reinstatement of Onuphis pancerii Claparède, 1868

FIGURE 5. Onuphis eremita. Paraneotypes (MNCN 16.01/15345). Scanning electron micrographs. A, pseudocompound hooks and aciculae, chaetiger 1; B, detailed view of short appendaged tridentate pseudocompound hook, chaetiger 2, arrow points to pseudocompound fracture; C, detailed view of long appendaged pseudocompound hook, chaetiger 1, arrow points to pseudocompound fracture; D, pectinate chaeta, chaetiger 10; E, detailed view of chaetae, chaetiger 4; F, subacicular hooks, chaetiger 10; a, acicula; l, limbate chaeta; la, long appendaged pseudocompound hook; pc, pectinate chaeta; sa, short appendaged pseudocompound hook.

FIGURE 4 in Hidden diversity within the polychaete Onuphis eremita sensu lato (Annelida: Onuphidae) — redescription of O. eremita Audouin & Milne-Edwards, 1833 and reinstatement of Onuphis pancerii Claparède, 1868

FIGURE 4. Onuphis eremita. Paraneotype (MNCN 16.01/15344). Line drawings. A, parapodium chaetiger 1, anterior view; B, parapodium chaetiger 23, anterior view; C, parapodium chaetiger 62; D, maxillae; E, mandibles.

FIGURE 3. Onuphis eremita. Paraneotypes A–I in Hidden diversity within the polychaete Onuphis eremita sensu lato (Annelida: Onuphidae) — redescription of O. eremita Audouin & Milne-Edwards, 1833 and reinstatement of Onuphis pancerii Claparède, 1868

FIGURE 3. Onuphis eremita. Paraneotypes A–I (MNCN 16.01/15345). Scanning electron micrographs. A, anterior end, dorsal view; B, anterior end, ventral view of specimen with six chaetigers with subulate ventral cirri; C, anterior end, ventral view of specimen with five chaetigers with subulate ventral cirri; D, detailed view of nuchal groove; E, detailed view of style of antenna; F, detailed view of a sensory bud of antenna; G, parapodium chaetiger 1, anteroventral view; H, parapodium chaetiger 4, dorsal view, arrow points to interramal papilla; I, detailed view of chaetigers 6 to 8, ventral view; b, branchia; ch, chaetiger; dc, dorsal cirrus; gp, glandular pad, p, interramal papilla; pol, postchaetal lobe; prl, prechaetal lobe; sb, sensory bud; vc, ventral cirrus.

FIGURE 2. Onuphis eremita. Photomicrographs. A in Hidden diversity within the polychaete Onuphis eremita sensu lato (Annelida: Onuphidae) — redescription of O. eremita Audouin & Milne-Edwards, 1833 and reinstatement of Onuphis pancerii Claparède, 1868

FIGURE 2. Onuphis eremita. Photomicrographs. A, detailed view of prostomium of a specimen without externally visible eyespots; B, detailed view of prostomium of same specimen under Confocal microscopy, arrows point to little eyespots.

FIGURE 1. Onuphis eremita. Neotype A in Hidden diversity within the polychaete Onuphis eremita sensu lato (Annelida: Onuphidae) — redescription of O. eremita Audouin & Milne-Edwards, 1833 and reinstatement of Onuphis pancerii Claparède, 1868

FIGURE 1. Onuphis eremita. Neotype A (MNHN TYPE 1555), Paraneotypes C–E (MNCN 16.01/15343-MNCN 16.01/ 15345), specimen from western Mediterranean B (AM W46795). Photomicrographs. A–E, anterior end, dorsal view; F, detailed view of prostomium and peristomium, arrows point to little eyespots; G, whole specimen within its tube; H, anterior portion of tubes in nature.

FIGURE 3. Jaw piece dissected from Namanereis hummelincki USNM 1283368 in A new record of the freshwater polychaete Namanereis hummelincki (Polychaeta: Nereididae) from epigean waters of Montserrat

FIGURE 3. Jaw piece dissected from Namanereis hummelincki USNM 1283368, ventromedial view. (Note the protrusion slightly proximal to the jaw's terminal bifurcation.)

FIGURE 1 in A new record of the freshwater polychaete Namanereis hummelincki (Polychaeta: Nereididae) from epigean waters of Montserrat

FIGURE 1. Montserrat and its major drainages. The two collection sites mentioned in this paper are marked by small dots along the Nantes River.

FIGURE 4 in A new record of the freshwater polychaete Namanereis hummelincki (Polychaeta: Nereididae) from epigean waters of Montserrat

FIGURE 4. Neighbor-Joining phylogenetic tree of Namanereis hummelincki (USNM 1283368) from Montserrat and similar sequences. The evolutionary history was inferred using the Neighbor-Joining method (Saitou & Nei 1987) The optimal tree with the sum of branch length = 0.66065705 is shown. The percentage of replicate trees in which the associated taxa clustered together in the bootstrap test (1000 replicates) are shown next to the branches (Felsenstein 1985). The tree is drawn to scale, with branch lengths in the same units as those of the evolutionary distances used to infer the phylogenetic tree. The evolutionary distances were computed using the p-distance method (Nei & Kumar 2000) and are in the units of the number of base differences per site. The analysis involved 11 nucleotide sequences. Codon positions included were 1st+2nd+3rd+Noncoding. All positions containing gaps and missing data were eliminated. There were a total of 585 positions in the final dataset. Evolutionary analyses were conducted in MEGA6 (Tamura et al. 2013).

FIGURE 5. Buccal cavity and third maxillipeds. A in Ankerius aenigmaticus, a new genus and new species of aphanodactylid crab symbiotic with polychaetes from the Red Sea coast of Saudi Arabia (Crustacea: Decapoda: Brachyura: Aphanodactylidae)

FIGURE 5. Buccal cavity and third maxillipeds. A, Selwynia laevis Borradaile, 1903, holotype male (7.1 × 5.6 mm) (CUMZ I.63872), Hulule Atoll, Maldives, coll. J.S. Gardiner, 1900; B, Gandoa brevipes (H. Milne Edwards, 1853), female (7.2 × 5.0 mm) (ZSM 1277/1) [holotype of Voeltzkowia zanzibarensis Lenz, 1905], Kokotoni, Zanzibar, coll. July 1889; C, Gustavus mecognathus Ahyong & Ng, 2009, paratype female (13.9 × 8.0 mm) (ZRC 2010.0252), SW Cocos Barrier, Guam, near small pass on large terebellid worm, coll. G. Paulay, 20 March 2000; D, Ankerius aenigmaticus gen. et sp. nov., female holotype (7.2 × 7.0 mm) (UF), Red Sea coast of Saudi Arabia.

FIGURE 2 in Ankerius aenigmaticus, a new genus and new species of aphanodactylid crab symbiotic with polychaetes from the Red Sea coast of Saudi Arabia (Crustacea: Decapoda: Brachyura: Aphanodactylidae)

FIGURE 2. Ankerius aenigmaticus gen. et sp. nov., female holotype (7.2 × 7.0 mm) (UF), Red Sea coast of Saudi Arabia. A, overall habitus; B, frontal view of cephalothorax; C, ventral view of cephalothorax showing thoracic sternum and vulvae.

FIGURE 4 in Three new species of Laonice (Polychaete: Spionidae) from West and Southwest Africa

FIGURE 4. Laonice olgae sp. nov. (Holotype, SAM A20531): A. Anterior end, general dorsal view; B. Hooded hook, chaetiger 51 (side view). Scales (mm): A—1; B—0.15.

FIGURE 2 in Three new species of Laonice (Polychaete: Spionidae) from West and Southwest Africa

FIGURE 2. Laonice galatheae sp. nov.: Multifocus photo of the anterior part of body, dorsal view (Paratype ZMUC-POL- 639).

FIGURE 3 in Three new species of Laonice (Polychaete: Spionidae) from West and Southwest Africa

FIGURE 3. Laonice cricketae sp. nov. (Holotype, ZMUC-POL-642): A. Anterior end, general dorsal view; B. Anterior end, more detailed image of the fusion between prostomium and peristomium (arrow); C. Parapodium, chaetiger 2; D. Parapodium, chaetiger 12; E. Parapodium, chaetiger 21; F. Hooded hook, chaetiger 50. Scales (mm): A, C–E—1; B—0.5; F—0.05.

FIGURE 1 in Three new species of Laonice (Polychaete: Spionidae) from West and Southwest Africa

FIGURE 1. Laonice galatheae sp. nov.: A–B. Anterior end, dorsal view; C. Parapodium, chaetiger 7 (arrows pointing to prechaetal notopodial lamellae); D. Parapodium, chaetiger 27 (arrows pointing to a narrow and elongated upper part of notopodial postchaetal lamella); E. Hooded hook in side view, chaetiger 29; F. Hooded hook in three-quarter view, chaetiger 33. Material: A, D–E. Holotype (ZMUC-POL-643); B. Paratype (ZMUC-POL-639); C. Paratype (ZMUC-POL-641), F. Paratype (ZMUC-POL-641). Scales (mm): A, C, D—1; B—2; E, F—0,03.

FIGURE 5 in Three new species of Laonice (Polychaete: Spionidae) from West and Southwest Africa

FIGURE 5. Distribution of the new species along the African coast: filled circles—Laonice galatheae sp. nov.; square— Laonice cricketae sp. nov.; triangle—Laonice olgae sp. nov.