A Review of the Genus Eunice - Smithsonian Institution Libraries

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SMITHSONIAN CONTRIBUTIONS TO ZOOLOGY
Branchiae (Figure 57jjc) present, palmate, distinctly longer
than notopodial cirri, not reduced in mid-body region, flexible.
Branchiae from setiger 22 to end of fragment. First 10
branchiae short, button-shaped. From setiger 31 branchiae
long, with slender filaments. Branchial distribution irregular
with most branchiae having 4-5 filaments clustering at tip of
short stems. Several branchiae with 6 to 7 long filaments and up
to 3 short, truncate filaments emerging near bases. Some
branchiae with filaments in 2 groups emerging from common
stems. Relation between length of filaments and branchiae and
notopodial cirri variable.
Neuropodial acicular lobes (Figure 57e,i) distally obliquely
rounded with aciculae emerging above midline. Anterior
presetal lobes high dorsally, forming rounded tabs visible
dorsal to aciculae. At level of aciculae presetal lobes deeply cut
away leaving bases of compound hooks exposed. Median and
posterior presetal lobes low, transverse folds. Postsetal lobes
low folds following outline of acicular lobes. First 4 ventral
cirri thick, tapering. Ventral cirri basally inflated from setiger 5.
Inflated bases thick; prominent ventrolateral ridges in all later
setigers. Narrow tips short and button-shaped in median
setigers, tapering in posterior setigers. Notopodial cirri short,
basally distinctly inflated, tapering towards slender tips,
without articulations.
Limbate setae stout, tapering, marginally smooth. Pectinate
setae (Figure 57b,l) tapering, furled or funnel-shaped. One
marginal tooth distinctly longer than other teeth; -12 teeth
present. First 30 setigers with compound spinigers (Figure
57c). Shafts distally inflated, marginally serrated. Appendages
tapering, knife-shaped. Compound falcigers (Figure 57m)
replacing compound spinigers from about setiger 30, considerably
smaller than spinigers. Shafts inflated, marginally serrated.
Appendages short, narrow, with nearly parallel sides,
with small, distinct heads, bidentate. Proximal teeth larger than
distal teeth, narrow, tapering, curved, directed laterally. Distal
teeth gently curved, directed obliquely distally. Guards longer
than appendage, symmetrically rounded, marginally smooth;
mucros absent Pseudocompound falcigers absent. Aciculae
(Figure 57d) single or paired, with chestnut to copper-colored
cores and clear sheaths, tapering, gently curved dorsally;
cross-sections round. Separation between core and sheath
distinct in both aciculae and subacicular hooks. Subacicular
hooks (Figure 57f-h) honey colored anteriorly, becoming
darker posteriorly, but always lighter in color than aciculae,
bidentate or tridentate, the latter with teeth in a crest Hooks
first present from setiger 60, present in all setigers thereafter;
three hooks in most setigers. Most hooks tapering distally
towards tip with distinct inflated subdistal region. Proximal
teeth large, directed laterally. Distal teeth short, nearly erect.
Some hooks distally tridentate with small distal, medium-sized
intermediate tooth and large main fangs.
UNKNOWN MORPHOLOGICAL FEATURES.—Pygidium
anal cirri.
EXPECTED STATES OF SELECTED UNKNOWN FEATURES.—
None.
and
CHARACTERS USED IN PREPARATION OF KEY NOT
SCORED.—Inappropriate Characters: 56, 60. Unknown
Characters: 1-2, 36-38,40, 42,47, 50, 63.
ASSUMED STATES FOR PURPOSE OF PREPARING KEY.—37,1;
38,1.
REMARKS.—Eunice impexa is listed with other species with
compound spinigers in Tables 52 and 53. It has articulated
ceratostyles, in contrast to the two other species, E. tubicola
and E. tubifex.
Eunice incerta (Hansen, 1882)
Nicidion incerta Hansen. 1882:8, pi. 2: figs. 19-21.
Eunice (Nicidion) incerta.—Hartman. 1959:313.
REMARKS.—An examination of the type material shows that
this species is a junior synonym of E. cariboea and is treated as
such above.
90. Eunice indie a Kinberg, 1865
FlOURE 57n-q; TABLES 41, 42
Eunice indica Kinberg. 1865:562; 1910:41, pi. 15: fig.12.
MATERIAL EXAMINED.—Holotype, RM 435, Bangka Strait,
Indian Ocean. Kinberg (1865:562) gives locality information
as: "Pars australis Freti Bangka, in fundo maris."
COMMENTS ON MATERIAL EXAMINED.—Holotype is now
incomplete, in three pieces, but is reasonably well preserved. A
posterior end in the same vial may belong to the same
specimen, but association is not unequivocal due to the
different state of preservation of the posterior end.
DESCRIPTION.—Holotype incomplete, of unknown sex, with
38 setigers; length 11 mm; maximal width 2 mm; length
through setiger 10,4 mm.
Prostomium (Figure 57n) distinctly shorter than peristomium,
about as wide as peristomium, less than x li as deep as
peristomium. Prostomial lobes frontally rounded, dorsally
flattened; median sulcus shallow. Eyes posterior to bases of
A-I, dark. Antennae in horseshoe; A-I separated from A-II and
A-III by gap, similar in thickness. Ceratophores ring-shaped in
all antennae, without articulations. Ceratostyles slender and
tapering, with up to 14 regular, cylindrical, long articulations in
A-III. A-I to posterior edge of peristomium; A-II to setiger 4;
A-III to setiger 14. Peristomium tapering slightly anteriorly
(possibly distorted by removal of jaws). Separation between
rings distinct on all sides; anterior ring 2 /3 of total peristomial
length. Peristomial cirri to middle of prostomium, tapering,
with 3 articulations.
Jaws missing.
Branchiae present, pectinate, distinctly longer than notopodial
cirri, not reduced in mid-body region, erect. Branchiae
from setiger 3 to 21. Branchiae terminating well before
posterior end, present on less than 55% of total number of
setigers. First branchiae single filaments; all other branchiae
pectinate; maximum 8 filaments. Stems tapering, erect.