A Review of the Genus Eunice - Smithsonian Institution Libraries

NUMBER 523 93
EXPECTED STATE OF UNKNOWN MORPHOLOGICAL FEA-
TURES.—None.
CHARACTERS USED IN PREPARATION OF KEY NOT
SCORED.—Inappropriate Characters: 51, 54, 55, 58, 59.
Unknown Characters: 13, 14, 74, 78.
ASSUMED STATES FOR PURPOSE OF PREPARING KEY.—
None.
REMARKS—Eunice bowerbanki is listed with similar species
in Tables 27 and 32. Of the species listed in Table 32, E.
bowerbanki, E. laurillardi, and E. multipeclinata have 10 or
more branchial filaments where the branchiae are best
developed. In E. laurillardi the notopodial cirri are articulated
throughout the body; in the other two species, only anterior
notopodial cirri are articulated. In E. bowerbanki the appendages
of the compound falcigcrs are tapering; the proximal teeth
are reduced and the distal teeth nearly erect. In E. multipectinata
the appendages do not taper appreciably; the proximal
teeth are much larger than the distal teeth and the distal teeth are
distinctly bent.
Eunice brasiliensis Kinberg, 1865
Eunice brasiliensis Kinberg, 1865:563; 1910:42. pi. 16: fig.19.
REMARKS.—Eunice brasiliensis was not reviewed by Hartman
(1948) nor does any material exist in Riksmuseet,
Stockholm, where the rest of Kinberg's types were deposited
(R. OlerOd, in litt.).
Kinberg's description and illustrations are of a species with
strongly moniliform, slender antennae and peristomial cirri.
Branchiae start between setigers 4 and 10; at the latter
segment Kinberg's illustrations shows that nine filaments are
present. The notopodia are articulated at least through the first
30 segments.
The species, originally reported from Pernambuco, Brazil, in
30-36 m depth, is not identifiable based on the descriptions
and illustrations alone and is here considered indeterminable.
34. Eunice brevis (Ehlers, 1887)
FIGURE 27; TABLES 33,40
Nicidion brevis Ehlers, 1887:98-99, pi. 28; figs. 9-14, pi. 29: figs. 1,2.
MATERIAL EXAMINED.—Holotype, MCZ 833, Key West,
Florida, 2-3 m, Blake cruises.
COMMENTS ON MATERIAL EXAMINED.—The holotype has
been dried out at one time and is somewhat distorted.
DESCRIPTION.—Holotype complete with 130 setigers; total
length 18 mm; maximal width 1.5 mm wide at about setiger 10.
Length through setiger 10, 2.5 mm. Anterior part of body
inflated with highly convex dorsum, becoming flattened in
posterior setigers; ventrum flattened in whole specimen.
Prostomium (Figure 27a) distinctly shorter than and narrower
than peristomium, as deep as x li of the peristomium.
Prostomial lobes irregularly truncate, dorsally somewhat
flattened; median sulcus shallow. Eyes not observed. Antennae
in nearly straight line, evenly spaced, similar in thickness.
Ceratophores ring-shaped in all antennae, without articulations.
Ceratostyles digitiform, with 2 to 3 irregular, cylindrical
articulations. All antennae to posterior peristomial ring.
Peristomium ventrally flaring, with distinct muscular lower lip.
Separation between rings distinct dorsally only; anterior ring
less than 2 /3 of total peristomial length. A transverse crease
along ventral surface not matching dorsal separation into rings.
Peristomial cirri barely to first peristomial ring, slender and
digitiform, without articulations.
Jaws now missing. Maxillary formula 1+1, 5+5, 4+0, 3+4,
and 1+1. Ehlers (1887:98, pi. 29: fig. 1) illustrated the jaws as
symmetrical; probably Mx III form distal arc with left Mx IV.
Branchiae absent.
Anterior neuropodial acicular lobes symmetrically rounded
or truncate, becoming symmetrically triangular in posterior
setigers; aciculae emerging at midline. All pre- and postsetal
lobes low folds. Ventral cirri thick, tapering. Median ventral
cirri basally strongly inflated in setigers 8 and 28 according to
Ehlers' illustrations; inflated bases thick, transverse welts.
Posterior ventral cirri without basal inflation, tapering. All
notopodial cirri short, medially inflated, without articulations.
Limbate setae (Figure 27c) longer than other setae, narrowly
limbate, marginally smooth, geniculate. Pectinate setae (Figure
27e) large; shafts cylindrical, slender, blades strongly flared,
flat. One marginal tooth longer than other teeth; about 15 teeth
present. Shafts of compound falcigers (Figure 27b) distally
inflated, marginally smooth, without distal beaks. Appendages
short, slightly tapering, with large heads, bidentate. Proximal
teeth slender, tapering, directed laterally, but curved distally.
Distal teeth about the same size as the proximal teeth, slender,
tapering, directed obliquely distally. Guards symmetrically
rounded, marginally serrated, without mucros. Pseudocompound
falcigers and compound spinigers absent. Aciculae
(Figure 27f) single, black, tapering, sharply pointed, straight;
posterior aciculae thick; cross-section round. Subacicular
hooks (Figure 27d) black, bidentate. Hooks first present from
setiger 27, present in all setigers thereafter, always single
(except for replacements). Hooks with narrow neck, distinct
head; proximal teeth larger than distal teeth, curved; distal teeth
slender, tapering; both teeth directed distally.
UKNOWN MORPHOLOGICAL FEATURES.—Relationship between
Mx III and left Mx IV; pygidium and anal cirri.
EXPECTED STATE OF UNKNOWN MORPHOLOGICAL FEA-
TURES.—Mx III short, curved, and forming part of distal arc
with left Mx IV.
CHARACTERS USED IN PREPARATION OF KEY NOT
SCORED.—Inappropriate Characters: 31-42, 56, 58, 59.
Unknown Characters: 13, 14, 74, 78.
ASSUMED STATES FOR PURPOSE OF PREPARING KEY.—
None.
REMARKS.—Eunice brevis is listed with similar species in
Tables 33 and 40. Among the abranchiate species, three have