A Review of the Genus Eunice - Smithsonian Institution Libraries

224 SMITHSONIAN CONTRIBUTIONS TO ZOOLOGY
was first described. It is listed with similar species in Tables 33
and 36. Eunice pruvoti and E. modesta both have single
filaments in all branchiae. Branchiae are continued to the
posterior end in the former and are missing on the last 10
setigers in the latter. Eunice modesta is further characterized by
the relatively light color of subacicular hooks and aciculae.
Eunice monilifer (Chamberlin, 1919)
Leodice monilifer Chamberlin, 1919b:ll-12.
Eunice enteles.—Hartman, 1938:97 [not Leodice enieles Chamberlin, 1918].
Eunice antennata.—Ruiman, 1944:115-117, pi. 7: figs. 154-156 [in part, not
Leodice antennota Lamarck, 1818].
REMARKS.—This species was originally described nestling
in kelp hold-fasts near Laguna Beach, California. The type was
deposited at the Museum of Comparative Zoology according to
Chamberlin, but is now missing (A. Johnston, pers. comm.).
The description given here summarizes information given by
Chamberlin, with updated terminology.
Antennae short, with up to 12 moniliform articulations.
Penstomial cirri much shorter than pcristomium and wrinkled
or distinctly articulated. Maxillary formula 1+1,4+6,8+0,9+9,
and presumably 1+1. Branchiae from setiger 7 to setiger 30 (of
109 setigers in complete type specimen), with maximum 3
filaments.
No mention was made of any parapodial or setal features,
except that notopodial cirri were characterized as being
wrinkled, but not distinctly divided into articulations.
Hartman (1938:97) stated that Chamberlin's information
about branchial distribution was unreliable. She illustrated
tridentate hooks in a specimen of Eunice from Laguna Beach,
but did not specify branchial distribution in the specimen she
illustrated. In other members of groups C-l and C-2,
differences in branchial distribution such as the one separating
E. enteles from E. monilifer in similar-sized specimens is
considered highly significant The two forms cannot be
synonymized with each other, however, neither one is
sufficiently well characterized to allow positive identification.
Eunice monilifer is here considered indeterminable.
Eunice mossambica Peters, 1854
Eunice mossambica Peters, 1854:612.
Marpkysa mossambica,—-Gravier, 1900:267-270, figs. 137-139, pi. 14: figs.
89,90.—Crossland, 1903:139-140, pi. 15: figs. 7-10.—Day, 1967:395, fig.
17.5i-m.
Nauphanta mossambica.—Fauchald, 1987:376-378, fig. la-e.
REMARKS.—Originally described in Eunice and usually
considered a member of Marphysa, this species was moved to
the genus Nauphanta by Fauchald (1987).
125. Eunice mucronata Moore, 1903
FIGURE 75a-e; TABLES 9,41,45
Eunice mucronata Moore, 1903:437-440, pL 25: figs. 42-45.
MATERIAL EXAMINED.—Lectotype, USNM 15851, and 11
paralectotypes USNM 5341, Albatross sta 3698, Japan, Sagami
Bay, 4.5 miles SE of Manazuru Saki (~35°O8'N, 139° 10Ti), 278
m, green mud, volcanic ash and sand, beamtrawl.
COMMENTS ON MATERIAL EXAMINED.—The lectotype was
isolated as USNM 15851; this specimen and one complete
specimen with 111 setigers from USNM 5341 had been
dissected by Moore. The.description is based on the specimen
from 15851.
DESCRIPTION.—Lectotype complete, with 116 setigers; total
length 58 mm; maximal width 4 mm at about setiger 25; length
through setiger 10, 8 mm. Body cylindrical, tapering relatively
slowly towards both ends.
Prostomium (Figure 75a) distinctly shorter and narrower
than pcristomium, less than '/2 as deep as pcristomium.
Prostomial lobes frontally rounded, dorsally inflated; median
sulcus shallow. Palpal region distinguished by transverse
frontal furrows. Eyes posterior to bases of A-1, very large,
brown, not clearly visible in all specimens. Antennae in a
horseshoe, with A-I isolated by a gap, similar in thickness.
Ceratophores ring-shaped in all antennae, without articulations.
Ceratostyles slender and tapering to very narrow tips without
articulations. A-I apparently articulated in some specimens due
to irregular muscle contractions rather than structural features.
A-I to setiger 2; A-I I to setiger 10; A-III to setiger 13.
Peristomium cylindrical. Separation between rings distinct on
all sides; anterior ring ~ 2 h of total penstomial length.
Peristomial cirri attached at extreme frontal edge of posterior
penstomial ring, reaching beyond tip of prostomium, same
length as A-I, slender and tapering, without articulations.
Summary maxillary formula for 2 syntypes 1+1, 7-8+7-8,
7-8+0, 6+8, and 1+1. Syntype from USNM 5341 with
consistently lower numbers of teeth where numbers differ.
Branchiae (Figure 75c) present, pectinate, distinctly longer
than notopodial cirri, not reduced in mid-body region, erect.
Branchiae from setiger 3 to setiger 34; in other syntypes last
branchiae on setigers 29-33. Branchiae terminating well
before posterior end, present on less than 55% of total number
of setigers. First 2 pairs single filaments; maximum 15 slender
filaments. Branchial stems slender, erect.
Anterior neuropodial acicular lobes distally truncate or
rounded, becoming distinctly triangular posteriorly; aciculae
emerging above midline. Pre- and postsetal lobes low,
transverse folds. First 3 ventral cirri thick, tapering. Ventral
cirri basally inflated in branchial region. Inflated bases ovate;
narrow tips tapering. Postbranchial ventral cirri increasingly
slender, tapering, resembling notopodial cirri closely, but
consistently shorter. All notopodial cirri slender, tapering, with
gently inflated bases, without articulations. Notopodial cirri
long in prebranchial region, becoming shorter through branchial
region, so in last of branchial setigers notopodial cirri no
longer than branchial filaments. Postbranchial notopodial cirri
about half as long as those in prebranchial region.
Limbate setae slender, marginally smooth. Pectinate setae