A Review of the Genus Eunice - Smithsonian Institution Libraries

NUMBER 523 77
Proximal teeth larger than distal teeth, directed laterally,
distally slightly upturned; distal teeth sharply pointed, directed
distally.
UKNOWN MORPHOLOGICAL FEATURES.—Features associated
with pygidium, anal cirri, and far posterior setigers.
EXPECTED STATES OF UNKNOWN MORPHOLOGICAL FEA-
TURES.—None.
CHARACTERS USED IN PREPARATION OF KEY NOT
SCORED.—Inappropriate Characters: 56, 58, 59. Unknown
Characters: 1,2,38.
ASSUMED STATES FOR PURPOSE OF PREPARING KEY —
None.
REMARKS.—Eunice barvicensis was considered a synonym
of E. mutilata by Hartman (1944:113); however, it has
branchiae present only through setiger 65, leaving nearly half
of the body abranchiate; branchiae are missing only in the last
15-20 setigers in E. mutilata; this number represents less than
15% of the total body length. Eunice barvicensis is listed with
similar species in Tables 24 and 26. Other species in this group
with branchiae from setiger 6 include E. samoae and E.
coccinea. Both these species have articulated ceratostyles; E.
barvicensis lacks such articulations. The shape of the subacicular
hooks resembles the shape present in E. cariboea and
similar abranchiate species listed in Tables 33 and 40, in that
the proximal tooth is tilted up, rather than strongly beaked as is
characteristic of E. mutilata and related species.
24. Eunice bassensis Mclntosh, 1885
FIGURE 19; TABLES 46, 47
Eunice bassensis Mclntosh, 1885:298, pi. 39: fig. 16, pi. 21A: figs. 8,
9.—Fauchald, 1986:245, figs. 15, 16.
Eunice anlennata.—Hartman, 1959:309 [in part, not Eunice antennata
Lamarck, 1818].
MATERIAL EXAMINED.—Holotype, BM(NH) ZK
1885.12.1.207, off East Montcoeur Island, Bass Strait, South
Australia, 39°10'S, 146°37'E, 2 Apr 1874, 69-73 m, dredged,
sand, Challenger sta 162.
COMMENTS ON MATERIAL EXAMINED.—The holotype was
reported as anteriorly incomplete when first described. The
type locality was corrected by Mr. A. Muir (in litt.)
DESCRIPTION.—Holotype posterior fragment of 55 setigers
of which last 22 in regeneration; 50 mm long; 3 mm wide;
apparently middle and last third of very large specimen. The
integument is light colored and contains a number of whitish
granules.
Branchiae (Figure 19b) present except in last 3 setigers,
longer than notopodial cirri, erect. All branchiae branching
except in regenerating portion where either 1 or 2 filaments
present. Maximal number of filaments 9; most branchiae with
6-8 filaments through setiger 33 of fragment. Stems erect,
longer than filaments, tapering. Filaments about as long as
notopodial cirri, digitiform.
Posterior neuropodial acicular lobes truncate with aciculae
emerging in midline. Pre- and postsetal lobes low folds. Ventral
cirri moderately basally inflated, becoming digitiform in
posterior setigers. Notopodial cirri tapering, with up to 5
distinct articulations.
Compound falcigers with bidentate appendages; guards
symmetrically bluntly pointed, without mucros. Pseudocompound
falcigers and compound spinigers absent. Aciculae
paired, yellow, tapering; tips pointed; cross-section round.
Separation between core and sheath indistinct in both aciculae
and subacicular hooks. Subacicular hooks (Figure 19a) yellow,
tridentate with teeth in a crest. Hooks tapering towards distinct
head; teeth decreasing evenly in size distally, proximal teeth
directed laterally.
UKNOWN MORPHOLOGICAL FEATURES.—All features associated
with prostomium and peristomium; jaw structure;
distribution of branchiae and subacicular hooks; structure of
anterior and median parapodia.
EXPECTED STATE OF UNKNOWN MORPHOLOGICAL FEA-
TURES.—A-I through A-III with moniliform articulations. Mx
III long, located behind left Mx II; distal arc absent. Branchiae
from approximately setiger 6; with reduced number of
filaments in mid-body region. Subacicular hooks present from
about setiger 25.
CHARACTERS USED IN PREPARATION OF KEY NOT
SCORED.—Inappropriate Characters: 58, 59. Unknown
Characters: 1-29, 33, 35, 36, 39, 40, 42, 45, 46, 48, 49,
51-56,61,62,65-68,80-82.
ASSUMED STATES FOR PURPOSE OF PREPARING KEY.—33,1.
REMARKS.—Eunice bassensis was considered a junior
synonym of E. antennata by Hartman (1959:309); it resembles
that species in having tridentate subacicular hooks and
branchiae continued to near the posterior end; however, the
very strong articulation of the posterior notopodial cirri, the
shape of the branchiae, and the subacicular hooks differ as do
the shape of the aciculae.
Eunice bassensis is listed with similar species in Tables 46
and 47; it is too poorly known to be included in the key.
Eunice bellii Audouin and Milne Edwards, 1833
Eunice bellii Audouin and Milne Edwards, 1833:223-224, pi. 10: figs. 1-4,
8-9, table 27.
Marphysa bellii.—Quatrefages, 1866:333-334.
REMARKS.—Eunice bellii was referred to the genus Marphysa
by Quatrefages (1866). As far as known, there has never
been any doubt that it belongs to that genus as currently is
defined. The earlier use of the name Eunice bellii in Cuvier
(1830:200) is a nomen nudum, thus the name was available for
use by Audouin and Milne Edwards (1833).