Eunice stanleyi Fauchald 1992

Eunice stanleyi

Eunice antillensis Ehlers, 1887:84–85 [in part].

MATERIAL EXAMINED.—Holotype, MCZ 810, 1 syntype of Eunice antillensis Ehlers, Blake sta 45, 25°33′N, 84°21′W, 185 m.

COMMENTS ON MATERIAL EXAMINED.—As indicated above, the material of E. antillensis was composed of two species, one of which appears to have been overlooked previously.

DESCRIPTION.—Holotype complete, of unknown sex, with 130 setigers; total length 58 mm; maximal width 4 mm wide; length through setiger 10, 7 mm. Body cylindrical; parapodia very short; anterior end truncate.

Prostomium (Figure 105g) distinctly shorter and narrower than peristomium, as deep as of peristomium. Prostomial lobes frontally rounded, dorsally inflated; median sulcus deep. Eyes posterior to bases of A-I, black, hidden below peristomial fold. Antennae in shallow horseshoe; A-I separated from A-II and III by distinct gap, similar in thickness. Ceratophores ring-shaped in all antennae, without articulations. Ceratostyles digitiform, with up to 11 cylindrical articulations in A-III. A-I to posterior edge of peristomium; A-II to setiger 3; A-III to setiger 6. Peristomium cylindrical, somewhat longer ventrally than dorsally. Separation between rings distinct dorsally and barely noticeable ventrally; anterior ring of total peristomial length. Peristomial cirri to middle of peristomium, tapering, with 4 articulations.

Jaws not examined.

Branchiae present, palmate, distinctly longer than notopodial cirri, not reduced in mid-body region. Branchiae from setiger 4 to setiger 33. Branchiae terminating well before posterior end, present on less than 55% of total number of setigers. First 8 and last 8 branchiae single filaments (Figure 105h); maximum 2 filaments, found scattered from setiger 12 through setiger 25. Filaments short, thick, longer than notopodial cirri in most setigers.

Anterior neuropodial acicular lobes distally truncate, becoming rounded to triangular posteriorly; aciculae emerging at midline. Pre- and postsetal lobes low, transverse folds. First 3 ventral cirri thick, tapering, rather prominent. In branchial region ventral cirri with indistinctly inflated bases; postbranchial ventral cirri tapering. Inflated bases ovate; narrow tips tapering. Notopodial cirri basally slightly inflated, tapering to digitiform tips, with 3 distinct articulations.

Limbate setae slender, with narrow limbations. Pectinate setae (Figure 105k) short, flaring, flat. One marginal tooth thicker and longer than other teeth, with ∼15 teeth. Shafts of anterior compound falcigers (Figure 105l) slightly inflated, marginally serrated. Shafts of posterior falcigers (Figure 105i) tapering, marginally smooth. Anterior appendages with very low, triangular, laterally directed proximal teeth and gently curved distal teeth, bidentate. Posterior appendages with long, tapering proximal teeth and distal teeth more distinctly bent than in anterior appendages. Guards asymmetrically bluntly pointed; anterior guards marginally serrated; posterior guards marginally smooth; mucros absent. Pseudocompound falcigers and compound spinigers absent. Aciculae paired, dark brown, tapering, straight; cross-sections round. Subacicular hooks (Figure 105j) dark brown to black, bidentate. Hooks first present from setiger 29, present in all setigers thereafter, always single (except for replacements). Hooks tapering. Proximal teeth much larger than distal teeth, triangular, directed laterally. Distal teeth narrow, tapering, erect.

UNKNOWN MORPHOLOGICAL FEATURES.—Jaw structure; pygidium and anal cirri.

EXPECTED STATES OF SELECTED UNKNOWN FEATURES.—Mx III forming distal arc with left Mx IV; Mx VI absent.

CHARACTERS USED IN PREPARATION OF KEY NOT SCORED.—Inappropriate Characters: 34, 56, 58, 59. Unknown Characters: 4, 6, 74, 78.

ASSUMED STATES FOR PURPOSE OF PREPARING KEY.—None.