A Review of the Genus Eunice - Smithsonian Institution Libraries

NUMBER 523 233
tion between rings distinct on all sides; anterior ring 3 A of total
pcristomial length. Pcristomial cirri to middle of anterior
peristomial ring, digitiform, without articulations.
Jaws not examined.
Branchiae (Figure 77i) present, pectinate, distinctly longer
than notopodial cirri, not reduced in mid-body region, erect.
Branchiae from seiiger 7, missing on last 15-20 setigers.
Branchiae present to near posterior end, present on more than
65% of total number of setigers. First 3 pairs and last half of
body with single filaments only; maximum 4 filaments at about
sctiger 25-30. Branchial stems short, tapering. Filaments in
pectinate branchiae digitiform, much longer than notopodial
cirri. Branchial filaments short on posterior half of body,
digitiform, distinctly shorter than notopodial cirri.
Anterior neuropodial acicular lobes (Figure 77g) short and
symmetrically rounded; median (Figure 77i) and posterior
acicular lobes obliquely truncate with aciculae emerging from
upper and higher ends. All presetal lobes low, transverse folds.
Anterior postsetal lobes high narrowly rounded, symmetrical,
becoming broadly rounded in median setigers, turning into low,
transverse folds in far posterior setigers. Postsetal lobes
recognizable as free lobes through at least setiger 35. Anterior
ventral cirri thick, tapering, becoming basally inflated from
about setiger 10. Inflated bases transverse welts along ventral
side of neuropodia; narrow tips digitiform. Inflated bases
missing in median fragment; posterior ventral cirri short,
digitiform, increasingly slender. All notopodial cirri digitiform,
without articulations, becoming increasingly slender posteriorly.
Limbate setae broadly limbate, marginally smooth. Pectinate
setae (Figure 771) tapering, furled. One marginal tooth longer
than all other teeth; 12-15 teeth present Shafts of compound
falcigers (Figure 77h,j,m) inflated, marginally smooth. All
appendages tapering, nearly triangular in shape, bidentate. Two
distinctly different kinds of heads present. In most heads both
teeth directed distally (Figure 77h,m); proximal teeth smaller
than distal teeth. Both teeth curved; distal teeth nearly erect In
other, rarer kind of heads proximal teeth triangular (Figure 77j),
directed laterally. Distal teeth distinctly bent. Both kinds
present in same parapodia; relative proportions of both kinds
varying along length of body, with second kind becoming more
common posteriorly. Both kinds of compound hooks with
pointed guards, symmetrically and asymmetrically bluntly
pointed, respectively; mucros absent. Pseudocompound falcigers
and compound spinigers absent. Aciculae dark brown to
nearly black, tapering, straight or gently curved; cross-sections
round. Subacicular hooks (Figure 77k,n) dark brown, bidentate.
Hooks first present from setiger 27, present in all setigers
thereafter, always single (except for replacements). All hooks
with narrowed, sometimes bent necks and distinct heads.
Proximal teeth somewhat larger than distal teeth, curved
distally. Distal teeth nearly erect.
UNKNOWN MORPHOLOGICAL FEATURES.—Jaw structures;
features associated with far posterior setigers; pygidium and
anal cirri.
EXPECTED STATES OF UNKNOWN MORPHOLOGICAL FEA-
TURES.—None.
CHARACTERS USED IN PREPARATION OF KEY NOT
SCORED.—Inappropriate Characters: 56, 58, 59. Unknown
Characters: 1,2,4,6,40, 74, 78.
ASSUMED STATES FOR PURPOSE OF PREPARING KEY.—
None.
REMARKS.—Eunice mutilata is listed with similar species in
Tables 27 and 31. An apparently characterizing feature is the
presence of free postsetal lobes through a long anterior section
of body.
Eunice mutilata samoae Hartmann-Schrtider, 1965
Eunice mutilata samoae Hartmann-Schroder, 1965a:134~135.
REMARKS.—Described as subspecies of E. mutilata Webster,
this form is here considered separate species and treated as
such below.
131. Eunice mutilatoides Augener, 1922
FIGURE 78a-c; TABLES 25,26
Eunice mutilatoides Augener, 1922b:45.
MATERIAL EXAMINED.—Holotype, ZMB 6397, Bird Key,
Dry Tortugas, coll. Hartmeyer, 1907.
COMMENTS ON MATERIAL EXAMINED.—Holotype has been
partially dried out; its condition does not warrant illustrations
of soft parts.
DESCRIPTION.—Holotype complete with 110 setigers; total
length 32 mm; maximal width 1 mm; length through setiger 10,
5 mm.
Prostomium distinctly shorter and narrower than peristomium,
as deep as V2 of peristomium. Median sulcus shallow.
Eyes posterior to bases of A-I, dark. Antennae in a straight line,
evenly spaced, similar in thickness. Ceratophores ring-shaped
in all antennae, without articulations. Ceratostyles thick and
digitiform, without articulations. No antennae reaching beyond
peristomium; A-I short; A-I I and A-III similar in length.
Peristomium cylindrical. Separation between rings distinct
dorsally and ventrally; anterior ring 3 A of total peristomial
length. Peristomial cirri to middle of anterior peristomial ring,
ovate, without articulations.
Jaws not examined.
Branchiae present, palmate, distinctly shorter than notopodial
cirri. Branchiae from setiger 8 to setiger 48. Branchiae
terminating well before posterior end, present on less than 55%
of total number of setigers. All branchiae short, stubby
filaments; no more than 2 filaments apparently present in any
setiger.
Anterior neuropodial acicular lobes rounded or truncate;
posterior acicular lobes currently sharply pointed, possibly due
to condition of type. Shape of pre- and postsetal lobes cannot be