A Review of the Genus Eunice - Smithsonian Institution Libraries

NUMBER 523 333
paratype consisted of several unidentifiable fragments.
The relationship between this and similar species was
discussed in detail by Fauchald (1969); no new information is
available. It is discussed in relation to E. segregata above.
Eunice valida Gravier, 1900
Eunice valida Gravier, 1900:264-267, figs. 134-136, pi. 13: figs. 80-82.
Eunice siciliensis.—Grassland, 1904:323-326, pi. 22: figs. 8, 9.
REMARKS.—This species was described with branchiae
starting at setiger 112 and continuing to the end, with
maximum a single branchial filament and as lacking both
subacicular hooks and pectinate setae. The species was
considered a synonym of Eunice siciliensis by Crossland; it
certainly belongs to the genus Palola as does siciliensis. It will
be further considered in a review of Palola.
Eunice validissima Grube, 1866a:67.
Eunice validissima Grube, 1866
REMARKS.—Grube applied this name to Mediterranean and
Adriatic specimens resembling E. gigantea. Specimens of E.
gigantea from the Red Sea and Fiji had branchiae from setiger
6; E. validissima had branchiae from setigers 9-11. Grube
must have had large specimens of a species in group B-2. His
description is inadequate to identify the species; no material is
available. The species is here considered indeterminable.
199. Eunice validobranchiate Monro, 1937
FIGURE 114a-g; TABLES 16,19,21
Eunice validobranchiata Monro, 1937:288-289, fig. 13a-f.
MATERIAL EXAMINED.—Three syntypes, BM(NH) ZK.
1937.9.2.312-6, Arabian Sea, South of Oman, 21°50WN,
59°52'00"E, 1046 meters, green mud, trawled, 3 Nov 1933,
John Murray Expedition sta 54.
COMMENTS ON MATERIAL EXAMINED.—All three syntypes
are incomplete; one with 103 setigers is deeply dissected and
probably formed the base of Monro's description; another has
111 setigers and forms the base of the description and
illustrations given here. The third type consists of 52 setigers.
DESCRIPTION.—All 3 syntypes incomplete. One syntype
with 103 setigers; length 85 mm; maximal width 4 mm; length
through setiger 10, 10 mm. Another syntype 111 setigers;
length 43 mm; maximal width 3.5 mm at setiger 10; length
through setiger 10, 7 mm. Third syntype with 52 setigers;
length 24 mm; maximal width 2.5 mm; length through setiger
10, 6 mm.
Prostomium (Figure 114a) distinctly shorter and narrower
than peristomium, less than x li as deep as peristomium.
Prostomial lobes frontally rounded, dorsally inflated; median
sulcus deep. Antennae in a horseshoe, with A-I isolated by a
gap, similar in thickness. Ceratophores ring-shaped in all
antennae, without articulations. Ceratostyles tapering, without
articulations. A-I to setiger 1; A-II to setiger 4; A-III to setiger
7. Peristomium cylindrical. Separation between rings distinct
dorsally, indistinct ventraily and indistinguishable laterally;
anterior ring 3 A of total peristomial length. Peristomial cirri
outreaching prostomium, slender and tapering, without articulations.
Maxillary formula 1+1,9+9,11+0, 8+11, and 1+1 according
to Monro. Mx III long. Left and right Mx IV apparently
matching. Distal teeth on left Mx II illustrated as being very
small.
Branchiae (Figure 114b) present, pectinate, distinctly longer
than notopodial cirri, not reduced in mid-body region, erect.
Branchiae from setiger 3 to setiger 37-40. Branchiae terminating
well before posterior end, present on less than 55% of total
number of setigers. All branchiae except last 2 or 3 pairs
pectinate; maximum filaments 33 in largest syntype, 17 and 13
in 2 other syntypes; maximum filaments reached at setigers
15-20. Branchial stems slender, erect Filaments long and
slender.
Anterior and median neuropodial acicular lobes truncate,
becoming irregularly rounded in posterior setigers (Figure
114c); aciculae emerging at midline. Pre- and postsetal lobes
low transverse folds. First 3 ventral cirri thick and tapering.
Ventral cirri modestly basally inflated in median setigers.
Inflated bases ovate; narrow tips digitiform. Posterior ventral
cirri not basally inflated, digitiform. Notopodial cirri long,
slender and tapering, with distinct internal aciculae, without
articulations.
Limbate setae slender. Shafts of pectinate setae (Figure
114e) slender, blade flaring, flat One marginal tooth longer
than other teeth; -10 teeth present. Shafts of compound
falcigers (Figure 114d) tapering, dentate along cutting margins.
Appendages nearly triangular in outline, bidentate. Proximal
teeth low, triangular and directed laterally. Distal teeth delicate,
tapering, nearly erect Guards symmetrically pointed, but not
mucronate, marginally serrated. Pseudocompound falcigers
and compound spinigers absent Aciculae single anteriorly,
paired posteriorly, yellow, slender, tapering, straight; crosssection
round. Separation of cores and sheaths indistinct in both
aciculae and subacicular hooks. Subacicular hooks (Figure
114f,g) yellow, bidentate. Hooks first present from setiger 37,
30, and 28 in 3 syntypes, present in all setigers thereafter,
always single (except for replacements). Hooks slender;
proximal teeth larger than distal teeth, directed distinctly
laterally.
UNKNOWN MORPHOLOGICAL FEATURES.—Pygidium and
anal cirri.
EXPECTED STATES OF UNKNOWN MORPHOLOGICAL FEA-
TURES.—None.
CHARACTERS USED IN PREPARATION OF KEY NOT
SCORED.—Inappropriate Characters: 22, 56, 58, 59. Unknown
Characters: 1, 2, 4, 6, 13, 14, 63.
ASSUMED STATES FOR PURPOSE OF PREPARING
None.
KEY.—