A Review of the Genus Eunice - Smithsonian Institution Libraries

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SMITHSONIAN CONTRIBUTIONS TO ZOOLOGY
Kinberg (1865:562) gave the original locality as "Mare
pacificum, long, orient. 107°10\ lat. austr. 2°30', in fundo 48
orgyiarum. VERNGREN." Kinberg (1910) repeated the same
information and the label in the vial is the same. Hartman
(1948:76) indicates that specimens should have been found off
Clipperton Island in the Pacific Ocean, i.e., at 107° WEST rather
than EAST. It is here assumed that label and Kinbcrg's
information is correct and that the specimens were found in the
strait between Sumatra and Borneo.
Eunice tentaculata is listed with similar species in Tables 41
and 42. The maximum number of branchial filaments indicated
by Kinberg appears to be correct, but cannot be absolutely
confirmed, due to the poor state of preservation of the material.
Eunice tentaculata has, at least in part, tridentate appendages in
the compound falcigers; furthermore the guards of these setae
are blunt, rather than mucronate. The relationship with other
species with multiple subacicular hooks was discussed in the
remarks on E. indica.
Eunice tentaculata Quatrefages, 1866
Eunice tentaculata Quatrefages, 1866:317-318.
Eunice lat ice ps Ehlers, 1868:312.—Fauchald, 1986:251-252. figs. 46-50.
REMARKS.—As detailed by Fauchald (1986) the valid name
of this species is E. laticeps and it has been treated as such
above.
Eunice tenuicirrata (Verrill, 1900)
Leodice tenuicirrata Verrill, 1900:643-644.—Hartman, 1942:9.
Leodice rtigma/wa.—Treadwell,1921:20-22, figs. 31-40, pi. 1: figs.10-13
[not Leodice stigmatura Verrill, 1900].
REMARKS.—The type is not present in the Peabody
Museum, Yale University, and has been missing at least for 40
years (Hartman, 1942; W. Hartman, in litt.). Treadwell did not
justify referring this species to E. stigmatura and did not
mention examining the types of either species. There is
insufficient information in the original description to allow any
identification of the species; it is here considered indeterminable.
187. Eunice tenuis (Treadwell, 1921)
FIGURE 107e-h; TABLES 33,38
Leodice tenuis Treadwell, 1921:51-52, figs. 154-163, pi. 4: fig. 11.
Eunice tenuis.—Hartman, 1956:284.
MATERIAL EXAMINED.—Holotype, AMNH 1913-1271, Dry
Tortugas, Florida.
COMMENTS ON MATERIAL EXAMINED.—The anterior end of
the holotype has been sliced off frontally, so only a remnant of
the peristomial rings is present on the dorsal side. The specimen
is complete ventrally only from setiger 5-6; thus no
illustrations could be made of the anterior end.
DESCRIPTION.—Holotype complete with 695 setigers; total
length 460 mm; maximal width 2 mm; length through setiger
10, -4.5 mm.
Prostomium according to Treadwell (1921:51) conspicuously
bilobed. Ceratophores ring-shaped in all antennae,
without articulations. Ccratostylcs slender and digitiform,
without articulations. Outreaching prostomium, with A-III
longest. Peristomial rings distinct on all sides; relauve length of
rings indeterminable. Pcristomial cirri short, ovate, without
articulations.
Jaws missing; maxillary formula 1+1, 7+5, 7+0, 3+6, and
1+1 (rewritten after statement in Treadwell, 1921:52).
Branchiae (Figure 107e) present, palmate, distinctly longer
than notopodial cirri, not reduced in mid-body region.
Branchiae from setiger 81 to posterior end. Branchiae present
to near posterior end, present on more than 65% of total number
of setigers. First 10 branchiae single filaments; number of
filaments increasing to 3 by setiger 150, finally to 4 by setiger
400. Numbers of filaments decreasing to 3 in last 100
segments; last few segments with reduced branchiae.
All ncuropodial acicular lobes distally rounded; aciculae
emerging at midlinc. AH prc- and postsctal lobes low,
transverse folds. First 200 ventral cirri digitiform. Ventral cirri
basally inflated in middle 200 segments. Inflated bases ovate;
narrow tip tapering. Posterior ventral cirri short, nearly
tubercular, without inflated bases. All notopodial cirri digitiform.
Notopodial cirri without articulations.
Limbate setae missing in scattered setigers, gently curved,
marginally frayed. Pectinate setae (Figure 107g) long and
prominent in posterior setigers, narrow, tapering, flat. Marginal
teeth no longer than other teeth; less than 10 teeth present.
Shafts of compound falcigers (Figure 1070 distally inflated,
marginally serrated. Appendages short, stout, bidentate. Proximal
teeth very much larger than distal teeth, tapering, directed
laterally. Distal teeth tapering, sharply bent. Guards symmetrically
rounded, marginally frayed; mucros absent. Pseudocompound
falcigers and compound spinigers absent. Aciculae
single, light amber-colored, tapering to blunt tips, straight;
cross-sections round. Subacicular hooks (Figure 107h) light
amber-colored, bidentate. Hooks first present from setiger 124,
present in all setigers thereafter, paired in most setigers.
Proximal teeth very much larger than distal teeth, directed
laterally. Distal teeth directed distally.
UNKNOWN MORPHOLOGICAL FEATURES.—Relationship between
Mx III and left Mx IV; pygidium and anal cirri.
EXPECTED STATES OF UNKNOWN MORPHOLOGICAL FEA-
TURES.—Mx III short; forming part of distal arc with left Mx
IV.
CHARACTERS USED IN PREPARATION OF KEY NOT
SCORED.—Inappropriate Characters: 22, 34, 56, 58, 59.
Unknown Characters: 4, 6-8, 10-17, 24, 26, 40, 74, 78.
ASSUMED STATES FOR PURPOSE OF PREPARING KEY.—
None.
REMARKS.—Eunice tenuis was compared to E. cariboea by