A Review of the Genus Eunice - Smithsonian Institution Libraries

314
REMARKS.—No material is available; nothing in the description
or illustrations argues against the synonymy proposed first
by Grube (1866b).
Eunice tahitana Kinberg, 1865
Eunice tahitana Kinberg, 1865:562; 1910:42, pi. 16: fig.17.
Eunice antennata.—Hartman, 1948:78-79 [in part, not Leodice antennata
Lamarck, 1818].
REMARKS.—No material is available in Riksmusect, Stockholm
(R. OlerOd, in litt.); when Hartman examined the
material, only fragments without an anterior end were left of
this species. The species was characterized as having antennae
with moniliform articulations and articulated peristomial and
notopodial cirri, and branchiae from setiger 4 with up to six
filaments. Hartman (1948:79) mentioned that the subacicular
hooks were yellow and tridentate; that the aciculae were
yellow, tapering and distally slightly curved; and that the
compound falcigers were distally bidentate.
Eunice tahitana belongs to group C-2, but cannot be
adequately characterized without access to fresh material. The
species is here considered indeterminable.
186. Eunice tentaculata Kinberg, 1865
FIGURE 107a-d; TABLES 41,42
Eunice tentaculata Kinberg, 1865:562; 1910:41, pi. 15: fig.13.
Eunice valenciennesii Grube, 1878b:55.—Hartman, 1948:76-77.
MATERIAL EXAMINED.—TWO syntypes, RM 434, 2°30'S,
107°30'E, 88 m.
COMMENTS ON MATERIAL EXAMINED.—Both syntypes are
in poor condition and the soft parts cannot be illustrated
meaningfully. Most of the description is based on the larger of
the syntypes. A set of maxillae are present in the vial; it is
approximately of the size to be expected for the longer of the
two syntypes and is here considered belonging to this species.
DESCRIPTION.—One syntype with 9 setigers only, frontally
dissected; jaws missing. Other syntype nearly complete with
about 75 setigers; length 50 mm.
Prostomium apparently frontally rounded; median sulcus
shallow. Eyes present. Ceratophores ring-shaped in all antennae,
without articulations. Ceratostyles with up to 8 long,
cylindrical articulations in A-III. A-I to middle of peristomium;
A-II to setiger 3 and A-III to setiger 10. Peristomium
cylindrical. Separation between rings distinct on all sides;
anterior ring 3 A of total peristomial length. Peristomial cirri
nearly to frontal margin of prostomium, tapering, with 4
articulations.
Maxillary formula 1+1,5+6,7+0,8+9, and 1+1. Mx III long,
located behind left Mx II. Mx V very soft, possibly due to poor
preservation.
Branchiae present, pectinate, not reduced in mid-body
region, erecL Branchiae from setiger 6 to setiger 28. Branchiae
SMITHSONIAN CONTRIBUTIONS TO ZOOLOGY
terminating well before posterior end, present on less than 55%
of total number of setigers. First branchiae single filaments; all
other branchiae pectinate, with possible exception of last few.
Maximum number of filaments 9 according to Kinberg (1865).
Shape of neuropodial acicular lobes indeterminable. Ventral
cirri inflated in some median setigers. Notopodial cirri medially
inflated at least in branchial region.
Limbate setae marginally smooth. Pectinate setae with both
marginal teeth slightly longer than other teeth; -15 teeth
present. Shafts of anterior compound falcigers (Figure 107a)
distally inflated, marginally smooth. Shafts of posterior
compound falcigers (Figure 107b) barely inflated, marginally
distinctly serrated. Anterior appendages tapering, with distinct
head, bidentate. Proximal teeth smaller than distal teeth,
triangular, directed laterally. Distal teeth sharply tapering,
curved. Anterior guards asymmetrically bluntly pointed,
marginally smooth; mucros absent. Posterior appendages
tapering, with distinct head, tridentate. Proximal teeth smaller
than distal teeth, narrowly triangular, nearly tapering, directed
laterally. Distal teeth replaced by large, erect shaft terminating
in 2 small blunt teeth. Guards symmetrically sharply pointed,
marginally serrated; mucros absent. Pseudocompound falcigers
and compound spinigers absent. Aciculae (Figure 107d)
yellow, tapering, distinctly bent distally; cross-sections round.
Separation between core and sheath indistinct in both aciculae
and subacicular hooks. Subacicular hooks (Figure 107c)
yellow, tridentate with teeth in a crest. Hooks first present from
setiger 23, present in all setigers thereafter, single in setiger 23;
most setigers with 4 or 5 hooks in dorsoventral row. Hooks
tapering to narrow necks and distinct heads. Main fang large,
triangular, directed slightly basally; secondary and tertiary
fangs on same bases; fangs decreasing evenly in size from main
to tertiary fangs. Some hooks with paired protuberances on
both sides of main fang appearing as laterally placed additional
teeth under certain light conditions.
UNKNOWN MORPHOLOGICAL FEATURES.—Most prostomial
and peristomial features; parapodial features; all features
associated with posterior setigers.
EXPECTED STATES OF UNKNOWN MORPHOLOGICAL FEA-
TURES.—MX III long; located behind left Mx II.
CHARACTERS USED IN PREPARATION OF KEY NOT
SCORED.—Inappropriate Characters: 58, 59. Unknown
Characters: 1-6, 8, 10-12, 14-17, 20, 32, 42-52, 54-56,
60,61,63,64.
ASSUMED STATES FOR PURPOSE OF PREPARING KEY —
None.
REMARKS.—The name E. tentaculata was proposed by
Kinberg (1865) for this taxon; a year later Quatrefages (1866)
used the same name for a completely different species (for a
detailing of problem see Fauchald, 1986); the latter species was
renamed E. laticeps by Ehlers (1868). Grube (1878b:55)
renamed Kinberg's species, in the mistaken belief that
Kinberg's paper was issued after Quatrefages' massive tomes.
Hartman (1948) repeated Grube's mistake.