Eunice manihine Longbottom 1970

Eunice manihine Longbottom, 1972

Eunice manihine Longbottom, 1972:339–344, figs. 1–17.

MATERIAL EXAMINED.—Holotype, BM(NH) ZB 1971.1, western Indian Ocean, Cosmoledo, S of Menai Island, 10°S, 47°E, foul-hooked, 421 m, coral debris, 6 Feb 1969, coll. M.R. Longbottom, Royal Society Indian Ocean Deep Slope Fishing Expedition.

DESCRIPTION.—Holotype complete with 127 setigers; total length 75 mm; maximal width 5 mm; length through setiger 10, 9 mm.

Prostomium (Figure 69a) distinctly shorter and narrower than peristomium, less than as deep as peristomium. Prostomial lobes frontally obliquely truncate, dorsally flattened; median sulcus deep. Eyes absent. Antennae arranged in a horseshoe, evenly spaced. Ceratophores ring-shaped in all antennae, without articulations. Only a single A-II attached to prostomium, slender and tapering, without articulations, reaching setiger 10. Another ceratostyle, presumably A-III, loose in vial, same shape as A-II, considerably longer, probably reaching setiger 20. Peristomium much longer vertrally than dorsally, projecting forward nearly to tip of prostomium, with a distinct muscular lower lip. Separation between rings distinct dorsally and ventrally; anterior ring of total length dorsally, ~ ventrally. Peristomial cirri to middle of prostomium, slender and digitiform, without articulations.

Maxillary formula 1+1, 12+11, 12+0, 11+13, and 1+1 according to Longbottom (1972).

Branchiae present, palmate, distinctly longer than notopodial cirri, not reduced in mid-body region. Branchiae from setiger 8 to setiger 43. Branchiae terminating well before posterior end, present on less than 55% of total number of setigers. Most branchiae single, slender filaments (Figure 69e), up to 3 filaments present.

Neuropodial acicular lobes distally truncate, usually somewhat lobed between aciculae; aciculae emerging at midline. All pre- and postsetal lobes low, transverse folds. First 4 ventral cirri thick, tapering. From setiger 5 bases increasingly inflated, by setiger 25 inflated bases projecting as ridges on ventral side of neuropodia; narrow tips short and button-shaped. Inflated bases reduced from about setiger 50, by setiger 60 inflated bases completely lost. Ventral cirri thick, tapering through remainder of body. Anterior notopodial cirri strongly inflated basally; notopodial cirri of branchial region tapering; postbranchial notopodial cirri digitiform; all without articulations.

Limbate setae present marginally smooth. Pectinate setae (Figure 69d, g) flaring, flat. One marginal tooth slightly longer than other teeth, ~15 teeth present. Shafts of compound falcigers (Figure 69f) distally inflated, marginally smooth. Appendages short, bidentate. Both teeth well developed. Guards symmetrically bluntly pointed; mucros absent. Pseudocompound falcigers and compound spinigers absent. Notoaciculae present in base of notopodial cirri in middle part of body. All neuropodia with multiple aciculae arranged in dorsoventral row, at least 3 aciculae, but up to 6 aciculae present, yellow, tapering to blunt tip (Figure 69c), especially inferior aciculae slightly bent; cross-sections round. Separation between core and sheath indistinct in both aciculae and subacicular hooks. Subacicular hooks (Figure 69b) yellow, bidentate. Hooks first present from setiger 29, present in all setigers thereafter; most parapodia with 2 hooks, up to 4 hooks present. Both teeth well developed, rather similar in size.

UNKNOWN MORPHOLOGICAL FEATURES.—Pygidium and anal cirri.

EXPECTED STATES OF UNKNOWN MORPHOLOGICAL FEATURES.—None.

CHARACTERS USED IN PREPARATION OF KEY NOT SCORED.—Inappropriate Characters: 22, 34, 39, 40, 56, 58, 59. Unknown Characters: 4, 6, 17, 23,42.

ASSUMED STATES FOR PURPOSE OF PREPARING KEY.—None.