Iphione muricata sensu Savigny 1822

Iphione muricata (Savigny in Lamarck, 1818) restricted Figs 1D–F, 3D–F, 4–6, 36 Polynoe muricata Savigny in Lamarck, 1818: 308–309 (diagn.). Iphione glabra de Quatrefages, 1866: 268–269; Solís-Weiss et al. 2004: S14. Iphione muricata: Potts 1910: 341; Fauvel 1919: 334; Fauvel 1932: 12–13 (partim); Fauvel 1935: 285–286 (partim); Fauvel 1939: 509 (partim); Monro 1939: 168 (partim); Day 1951: 14 (partim); Gibbs 1971: 123 (partim); Amoureux 1974: 430 (partim); Pettibone 1986: 9–16, Figs 1–5 (syn. partim); Hartmann-Schröder 1991: 19 (partim). Type material. MNHN TYPE 335: Mauritius (Île de France) M. Mathieu, coll. no further data; holotype of Polynoe muricata and syntype of Iphione glabra (see Remarks) (bent ventrally, most elytra previously removed; body and elytra with a massive accumulation of precipitates, probably salts; two elytra cleaned, one median and one posterior elytra removed; body 24 mm long, 16 mm wide, 29 chaetigers). MNHN TYPE 334: Mauritius (Île de France), Péron & Lesueur, coll. no further data; syntype of Iphione glabra only; better preserved, used for redescription) Additional material Egypt, Red Sea, Gulf of Suez. Four specimens (MNHN A 274-19), Mission Jousseaume, 1894 (no further data; three specimens bent ventrally; elytra brownish, oblique longitudinal band barely defined, some with calcareous epibionts; macrotubercles in two rows, progressively smaller posteriorly; body 19–28 mm long, 10–15 mm wide, 29 chaetigers). Ten specimens (MNHN A 274-27), Mission Jousseaume, 1894 (no further data; four specimens bent ventrally; elytra brownish, oblique longitudinal band barely defined, most with calcareous epibionts; macrotubercles in two rows, progressively smaller posteriorly; body 14–23 mm long, 7.5–14.0 mm wide, 29 chaetigers). Sultanate of Oman. Two specimens (UF 411), Muscat Governorate, Qurm Beach (23°37’33.6” N, 58°28’51.6” E), 0–1 m, sandstone, under rocks, mid-low water intertidal, 26 Jan. 2005, V. Bonito, M. Claereboudt & G. Paulay, coll. (markedly bent ventrally; pharynx exposed; elytra golden to brownish, oblique longitudinal blackish line better defined in largest specimen; macrotubercles in two rows, progressively smaller posteriorly; cirrigerous segments with basal tubercle of dorsal cirrophores projected, barely in smallest specimen; body length not measured, 0.8–1.6 mm wide, 28–29 chaetigers). One specimen (UF 9313), Muscat Governorate, Haramel Village cove (23°35’42.0” N, 058°36’03.6” E), 14 Jan. 2020, G. Paulay, S. Maslakova & M. Cherneva, coll. (markedly bent ventrally; body wall reddish; elytra brownish with an oblique, slightly darker longitudinal band; macrotubercles in three rows, progressively smaller posteriorly; basal tubercle of dorsal cirrophores projected; body not measured). One specimen (UF 9318), Muscat Governorate, Haramel Village cove (23°35’42.0” N, 58°36’03.6” E), 14 Jan. 2020, G. Paulay, S. Maslakova & M. Cherneva, coll. (complete, bent ventrally; body wall reddish; elytra brownish with an oblique, slightly darker longitudinal band; macrotubercles in two rows, progressively smaller posteriorly; basal tubercle of dorsal cirrophores projected; body 27 mm long, 16 mm wide, 29 chaetigers). One specimen (UF 9319), Muscat Governorate, Haramel Village cove (23°35’42.0” N, 58°36’03.6” E), 14 Jan. 2020, G. Paulay, S. Maslakova & M. Cherneva, coll. (complete, slightly bent ventrally; body wall reddish; elytra brownish with an oblique, slightly darker longitudinal band; macrotubercles in three rows, progressively smaller posteriorly; basal tubercle of dorsal cirrophores projected; body 27 mm long, 17 mm wide, 29 chaetigers). One specimen (UF 9320), Muscat Governorate, Haramel Village cove (23°35’42.0” N, 58°36’03.6” E), 14 Jan. 2020, G. Paulay, S. Maslakova & M. Cherneva, coll. (complete, slightly bent ventrally; body wall reddish; elytra brownish with an oblique, slightly darker longitudinal band; macrotubercles in three rows, progressively smaller posteriorly; basal tubercle of dorsal cirrophores projected; body 25 mm long, 15 mm wide, 29 chaetigers). One specimen (UF 9368), Muscat Governorate, Bandar Al Jissah (23°33’25.2” N, 58°39’03.6” E), 16 Jan. 2020, G. Paulay, M. Claereboudt, S. Maslakova & G. Kolbasova, coll. (complete, slightly bent ventrally; body wall reddish; elytra golden, without black spots; macrotubercles in two rows, progressively smaller posteriorly; basal tubercle of dorsal cirrophores projected; body 19 mm long, 13 mm wide, 29 chaetigers). One specimen (UF 9454), Muscat Governorate, West side of Fahal Island (23°40’55.2” N, 58°30’00.0” E), 19 Jan. 2020, G. Paulay, A. Bemis, G. Kolbasova & S. Brown, coll. (juvenile; right parapodia of chaetigers 13 and 14 previously removed; elytra yellowish, without black spots, macrotubercles in two rows, progressively smaller posteriorly; cirrigerous segments with basal tubercle not projected; other data in variation: body 11 mm long, 6 mm wide, 28 chaetigers). One specimen (UF 10504), Dhofar Governate, Mirbat, Chinese Wreck (16°57’57.6” N, 54°42’28.8” E), 26 Ja. 2022, G. Paulay, R. Lasley, A. Uehling & E. Ciareboudt, coll. (bent ventrally; right parapodia of chaetigers 11–16 previously removed; right elytra 5 and 6 removed for observation (kept in container); elytra brownish, with an oblique longitudinal wide band, and white epibionts; macrotubercles in 2—three rows, progressively smaller posteriorly; cirrigerous segments with basal tubercle projected; body mm 26 long, 15 mm wide, 29 chaetigers). Djibouti Two specimens (MNHN A 274-7), Djibouti, 1897, No. 29, M. Coutière, coll. (largest specimens with all left elytra previously removed; elytra brownish without black spots; macrotubercles in two rows, progressively smaller posteriorly; body 19–27 mm long, 11–13 mm wide, 29 chaetigers). One specimen (MNHN A 274-12), Mission Gravier Djibouti, Île Moucha, Gulf of Tadjourah, coral, 23 Jan. 1904, C. Gravier, coll. (bent ventrally; elytra brownish; macrotubercles in two rows, decreasing in size posteriorly; body 17.5 mm long, 9.5 mm wide, 29 chaetigers). Seven specimens (MNHN A 274-23), Obock, Obock, Mission Jousseume, 1895, M. Jousseume, coll. (body damaged; two with most elytra detached, some in container; elytra brownish without black spots; macrotubercles in two rows progressively smaller posteriorly; body 14–27 mm long, 9–15 mm wide, 29 chaetigers). One specimen (MNHN A 274-32), Mission Gravier Djibouti, Îlot Residence, in mixed bottoms (sand and rock), 1904, C. Gravier, coll. (markedly bent ventrally; elytra brownish without black spots; macrotubercles in two rows progressively smaller posteriorly; not measured). Kenya. Seven specimens (NHM 1924.6.18.187–191), F.A. Potts, coll. (no further data; elytra yellowish to brownish, most with a barely pigmented longitudinal blackish band, macrotubercles in two rows, first row with macrotubercles slightly larger than those in second row; body 10–21 mm long, 9.0– 9.5 mm wide, 29 chaetigers). Mozambique. One specimen (NHM 1963.1.6), Delagoa Bay, Inhaca Island (25°50’ S, 32°50’ E), J.H. Day, coll. (elytra brownish, blackish band barely visible, macrotubercles slightly smaller posteriorly, in 2 irregular rows; body 23 mm long, 14 mm wide, 29 chaetigers). Tanzania. One specimen (CAS 227559), complete, Zanzibar Expedition 2018, Zanzibar, Mangapwani (05°59’24.0” S, 39°11’24.0” S), 0.2–3.0. m, T.M. Gosliner, coll. (data used for variation). Three specimens (NHM 1941.4.4.165–167), Pemba Island, sandbanks, 18 Nov. 1901, C. Crossland, coll. (one completely bent, another one almost without elytra; elytra brownish with a longitudinal blackish band barely visible, macrotubercles in two rows of similar size; body 17–25 mm long, 11–14 mm wide, 29 chaetigers). One specimen (ZMH PE 187 b), Bawe, Zanzibar, 15 Jul. 1989, Votzkow, coll. (no further data; slightly dehydrated; first few pairs of anterior and posterior elytra, and left parapodium of chaetiger 16 previously removed (parapodium lost); elytra brownish with two rows of macrotubercles progressively smaller posteriorly; cirrigerous segments with basal tubercle of dorsal cirrophores projected; body 28.5 mm long, 11 mm wide, 29 chaetigers). One specimen (ZMH V 4575), Bani Island, Zanzibar, Stuhlmann, coll. (no futher data; markedly bent ventrally, partially dehydrated; elytra brownish, without black bands, with two rows of macrotubercles decreasing in size posteriorly; not measured). One specimen (ZMH V 4577), Kokotoni, Zanzibar, Stuhlmann, coll. (no further data; bent ventrally; elytra brownish with high amount of sediment particles mostly on fimbriae; darker middorsal bands indistinct; elytra with two rows of macrotubercles heavily eroded, progressively smaller posteriorly; body 20.5 mm long, 14 mm wide, 29 chaetigers). Mayotte. One specimen (MNHN A 274-9), 1883, A. Vinnout, coll. (no further data; markedly bent ventrally; left elytron 10 removed for observation (kept in container); elytra with an oblique, longitudinal black band, expanded anteriorly; macrotubercles in two rows, progressively smaller posteriorly; not measured). Madagascar. One specimen (MNHN A 274-10), Baie St. Augustin, No. 23, 1909, M. Bastard, coll. (no further data; some elytra previously removed; elytra brownish without black spots; macrotubercles in two rows, progressively smaller posteriorly; cirrigerous segments with basal tubercle of dorsal cirrophores barely projected; body 20 mm long, 12 mm wide, 29 chaetigers). Four specimens (MNHN A 274-29), Mission F. Geay, Tuléar, reefs, No. 4978 (no further data; partially dehydrated, one markedly bent ventrally with pharynx fully exposed, jaws with one additional denticle; elytra brownish without black spots, outer elytral surface darker than inner one; macrotubercles in two rows, progressively smaller posteriorly; body 14.0– 19.5 mm long, 8.0– 10.5 mm wide, 29 chaetigers). Five specimens (MNHN A274-35), 1919, M. Decary, coll. (no further data; very soft specimens, elytra detaching or in site; elytra with an oblique l