A Review of the Genus Eunice - Smithsonian Institution Libraries

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Eunice valenciennesii Grube, 1878
Eunice valenciennesii Grube, 1878a:99.—Hartman, 1948:76-77.
Eunice tentaculata Kinberg, 1865:562.
REMARKS.—As noted elsewhere (Fauchald, 1986:252) and
above, this name was proposed as a replacement name for
Eunice tentaculata Kinberg in the mistaken belief that the
species name proposed by Kinberg was preoccupied. The name
is here considered an objective junior synonym of E.
tentaculata Kinberg, because that name is valid and the
replacement name was proposed (by inference) for the material
treated by Kinberg, and no additional material has ever been
named as types or otherwise.
198. Eunice valens (Chamberlin, 1919)
FIGURE 113k-q; TABLES 19,20
Leodice valens Chamberlin, 1919c:257-258,pl. 1: figs. 6-8.
Eunice valens.—Fauchald, 1969:10-12. fig. 5a-d.
MATERIAL EXAMINED.—Holotype, MCZ 120, Mendocino,
California, coll. A. Agassiz.
DESCRIPTION.—Holotype complete with 179 setigers; total
length 140 mm; maximal width 9 mm at setiger 15; length
through setiger 10, 12.5 mm; width at setiger 10, 8.5 mm.
Anterior part of body circular in cross-section, becoming
ventrally flattened with convex dorsal side posteriorly. Anterior
end truncate; body tapering slowly posteriorly to narrow
pygidium. Anal cirri as long as the last 5 to 6 setigers, with 5 or
6 cylindrical articulations.
Prostomium (Figure 113k) distinctly shorter and narrower
than peristomium, less than l /2 as deep as peristomium.
Prostomial lobes frontally obliquely truncate, dorsally flattened;
median groove shallow. Transverse grooves separating
palpal region present. Dark purple eyes lateral to bases of A-II.
Antennae in a horseshoe, with A-I and A-II emerging close
together, separated from A-III by distinct gaps, similar in
thickness. Ceratophores ring-shaped in all antennae, without
articulations. Ceratostyles tapering, with up to 11 cylindrical
articulations in A-III. A-I to front of posterior peristomial ring;
A-II to back of posterior peristomial ring; A-III to setiger 1.
Peristomium cylindrical. Separation between rings distinct
dorsally and ventrally and indistinct only for short distance
laterally; anterior ring 3 A of total peristomial length. Peristomial
cirri to middle of anterior ring, slender and tapering, with
three indistinct rings.
Maxillary formula 1+1, 6+8, 9+0, 6+8 according to
Chamberlin (1919c), presumably also 1+1. Mx III long and
located behind left Mx II.
Branchiae (Figure 1131) present, pectinate, distinctly longer
than notopodial cirri, not reduced in mid-body region, erect.
Branchiae from setiger 3 to setiger 76. Branchiae terminating
well before posterior end, present on less than 55% of total
number of setigers. First 2 and last 10 pairs single filaments; all
SMITHSONIAN CONTRIBUTIONS TO ZOOLOGY
other branchiae with at least 2 filaments; maximum 11
filaments. Branchial stems tapering and erect. Filaments
digitiform, relatively thick; filaments about as long as
notopodial cirri.
Anterior neuropodial acicular lobes symmetrically rounded
with aciculae emerging dorsal to midline. Posterior acicular
lobes nearly conical. All presetal lobes low folds. Anterior
postsetal lobes free, triangular lobes about as high as acicular
lobes, becoming low folds following outline of acicular lobes
closely from about setiger 20. First 9 ventral cirri thick and
tapering. Ventral cirri basally inflated from about setiger 10
through about setiger 60. Inflated bases thick transverse welts;
narrow tips tapering. Posterior ventral cirri thick, tapering and
reflexed behind acicular lobes in far posterior setigers. Anterior
notopodial cirri basally inflated, with 3 to 4 indistinct
articulations. Articulations lost in middle branchial setigers;
postbranchial notopodial cirri slender, tapering, without articulations.
All limbate setae outrcaching compound hooks, slender and
marginally finely serrated. All pectinate setae (Figure 113n)
with cylindrical, slender shafts, distally tapering, flat. One
marginal tooth longer than other teeth; -10 teeth present. Shafts
of all compound falcigcrs (Figure 113m) very coarse, nearly as
thick as aciculae, tapering from wide proximal part of hinge.
Beaks absent; shafts with distinct, dark-colored cores and
dark-yellowish sheaths. Appendages short, narrow and tapering
to small head, bidentate. Proximal teeth short, triangular and
directed laterally, more prominent in posterior than in anterior
setigers. Distal teeth nearly erect in all setigers, sharply pointed
in anterior setigers, tapering and blunt in posterior setigers. All
guards asymmetrical, sharply pointed, but not mucronate in
anterior setigers, bluntly pointed in posterior setigers. Pseudocompound
falcigers and compound spinigers absent. All
aciculae and subacicular hooks with core and sheath structure.
Aciculae (Figure 113q) paired in most setigers, but up to 4
aciculae in some setigers, yellow, tapering to blunt tips and
gently curved; cross-section round. Subacicular hooks (Figure
113p) yellow, bidentate. Hooks first present from setiger 43,
present in all setigers thereafter, single in most, paired in some
setigers. Hooks about as thick as aciculae, tapering to distinct,
bent necks and distinct heads. Both teeth directed distally;
proximal teeth larger than distal teeth.
UNKNOWN MORPHOLOGICAL FEATURES.—None.
EXPECTED STATES OF UNKNOWN MORPHOLOGICAL FEA-
TURES.—None.
CHARACTERS USED IN PREPARATION OF KEY NOT
SCORED.—Inappropriate Characters: 56, 58, 59. Unknown
Characters: 42.
ASSUMED STATES FOR PURPOSE OF PREPARING KEY.—
None.
REMARKS.—Eunice valens belongs to group Al and is
compared to similar taxa in Tables 19 and 20. The holotype was
not dissected for the dentition; thus Chamberlin must have had
available at least one paratype. When examined in 1967, the