Revision of the taxonomy of Polycirrus Grube, 1850 (Annelida: Terebellida: Polycirridae) Author Glasby, Christopher J. chris.glasby@nt.gov.au Author Hutchings, Pat chris.glasby@nt.gov.au text Zootaxa 2014 2014-10-21 3877 1 1 117 journal article 5268 10.11646/zootaxa.3877.1.1 344cf70d-6a17-464b-9a35-40324bcef9d4 1175-5326 4948375 2695A2A6-2805-4FC6-B6B6-A8C68354B944 Polycirrus aurantiacus Grube, 1860 Fig. 9a–f Polycirrus aurantiacus Grube, 1860: 110–112 , pl. 4, fig. 8. Apneumea aurantiaca .— Quatrefages, 1865: 383 . Type locality. Croatia , Adriatic Sea . Material examined. SYNTYPES : 2, ZMB Q4999 , Croatia , Adriatic Sea : Cherso (now Cres), 44º54′ N , 14º25′ E , coll. Grube ; SYNTYPES : several, MPW 342, Cherso. SYNTYPE : SMNH 985 , Croatia , Meddelhavet Lussin (now Lošinj), 44º32′ N , 14º28′ E . Description. Description based on ZMB Q4999, both well-preserved specimens with body wall intact and chaetae mainly intact, pale cream to yellowish brown in colour, both female, larger one 30 mm long and 2 mm wide excluding buccal tentacles, complete with about 70 segments, smaller one 20 mm long and 2 mm wide excluding buccal segments, complete with about 60 segments. SMNH 985 an anterior fragment of tentacles and about 10 segments, 40 mm long and 4 mm wide, not well preserved, posterior fragment 30 mm long and 1.5 mm wide for about 50 segments. MPW 342 contains a large number of poorly preserved individuals, mainly buccal tentacles and few posterior fragments, one posteriorly incomplete individual 35 mm long and 3 mm wide for about 50 segments (one of these is figured in Fig. 9a , as it most clearly showed the structure of the upper lip). Dorsum anteriorly tessellated. Anterior venter with mid-ventral groove from segment 4 ( Fig. 9a ) and discrete ventro-lateral pads; pads more-or-less smooth, extending from segment 3 to 12. Buccal tentacles numerous, of two types : (1) cylindrical, thickened distally, distinctly grooved and (2) cylindrical, uniformly thin, weakly grooved; both types arising at junction between prostomium and upper lip. Prostomial ridge distinctly curved, extending along anterodorsal base of upper lip. Upper lip trefoiled with lateral blindly ending enclosed diverticulae, margin of medial lobe convoluted; oral surface glandular, ciliated, with grooves leading to mouth. Inner lower lip oblong, smooth; outer region flat, shield-like, oblong, longer than wide, ridged and grooved, extending posteriorly to segment 4. Achaetous segments visible dorsally but obscured by expanded outer lower lip ventrally. Notochaetigerous segments 46, extending to segment 48 (approximately). Notopodia short and more-or-less rectangular, prechaetal lobe low, postchaetal lobe digitiform, longer than prechaetal ( Fig. 9b ). Notochaetae of one type (chaetigers 4, 21 examined), two distinct lengths, smooth with narrow striated wings, uniformly tapered ( Fig. 9c ). Neurochaetae beginning on segment 14. Neuropodial tori ridge like, similar along body. Uncini with short neck and straight to convex base ( Type 1), teeth above main fang arranged in single transverse series or arranged in double transverse series (MF:1:0–6) enlarged median tooth above main fang present, subrostral process present as low, rounded protuberance ( Fig. 9d–f ). Nephridial papillae present, cylindrical. Pre-gular membrane nephridial papillae present on segments 3, 4. Post-gular membrane nephridial papillae present, on segments 5–9; situated at ventral base of notopodia. Pygidium simple rosette. Comments. It appears that Grube deposited syntype material of P. aurantiacus in three different museums; all of the syntype material examined is clearly labelled as types having been identified by Grube. As all specimens are conspecific and all were collected from the Cres-Lošinj Archipelago in the northern Adriatic, there appears to be nothing to be gained from designating a lectotype .