A Review of the Genus Eunice - Smithsonian Institution Libraries

294 SMITHSONIAN CONTRIBUTIONS TO ZOOLOGY
REMARKS.—Eunice rubrivittata is listed with similar species
in Tables 41 and 42. The only other species with notopodial
articulations limited to anterior setigers in Table 42 is E.
medicina. In the latter posterior branchiae have at least paired
filaments; in the former the last 10-11 pairs of branchiae are
single filaments.
173. Eunice rubrocincta Ehlers, 1868
TABLES 19,21
Eunice rubrocincta Ehlers, 1868:344-347, pi. 15: figs. 4-14.
COMMENTS ON MATERIAL EXAMINED.—No material is
available, the notes below are based on the original description
and illustrations.
DESCRIPTION.—A live specimen with 100 segments 68 mm
long and 3 mm wide; a preserved specimen with 106 segments
45 mm long and 3.5 mm wide.
Ceratostyles digitiform, without articulations. A-III to
setiger 1, A-I and A-II to middle of peristomium. Pcristomial
rings distinct on all sides. Peristomial cirri to posterior part of
prostomium, without articulations. Antennae and pcristomial
cirri slender, nearly filiform.
Maxillary formula 1+1, 6+7,7+0, 3+8,1+1, and 1+1. Mx III
part of a distal arc with left Mx IV. Mx VI very small, but
distinct.
Branchiae present, pectinate, distinctly longer than notopodial
cirri, erect. Branchiae from setiger 3 to setiger 80.
Branchiae terminating well before posterior end, present on
more than 65% of total number of setigers. Maximum number
of filaments 8; posterior half of body with very small, single
branchial filaments. Branchiae of a median segment illustrated
as having strong, tapering branchial stems and digitiform
filaments.
Ventral cirri distinctly inflated basally in median region,
tapering in anterior and posterior setigers. Notopodial cirri
medially inflated, without articulations.
Pectinate setae illustrated as flared and furled with both
marginal teeth longer than other teeth and a total of -15 teeth.
Shafts of compound falcigers may have been inflated with
internal striations. Appendages illustrated as strongly tapering
with very short heads, bidentate. Both teeth directed laterally
and similar in size. Guards asymmetrically bluntly pointed;
mucros absent. Pseudocompound falcigers and compound
spinigers absent. Aciculae yellow, tapering; cross-sections
round. Separation between core and sheath indistinct in both
aciculae and subacicular hooks. Subacicular hooks yellow,
bidentate. Hooks with large, laterally directed proximal teeth
and smaller, obliquely directed distal teeth.
UNKNOWN MORPHOLOGICAL FEATURES.—Most prostomial
and peristomial features; jaw structure; details of parapodial
structures.
EXPECTED STATES OF SELECTED UNKNOWN FEATURES —
None.
CHARACTERS USED IN PREPARATION OF KEY NOT
SCORED.—Inappropriate Characters: 22, 58, 59. Unknown
Characters: 4-19, 24, 26, 33, 39, 42-51, 54-56, 60, 80-82.
ASSUMED STATES FOR PURPOSE OF PREPARING KEY.—
None.
REMARKS.—Described from Kvamcr Gulf in the Adriatic
Sea, this species has been considered the same as E. harassii
(Fauvel, 1923:399). Ehlers was aware of the similarities and
gave a differential description, demonstrating at what points he
believed his species differed from E. harassii. Eunice rubrocincta
has branchiae ending well before the end of the body; E.
harassii has (apparently) branchiae continued to the far
posterior end. Eunice rubrocincta has light yellow aciculae and
subacicular hooks; /•.'. harassii has light brown aciculae and
subacicular hooks.
Eunice rubrocincta belongs to group A-1 rather than to B-2
as suggested by Fauchald (1970) and is listed with similar
species in Tables 19 and 21. Of species without articulated
ceratostyles listed in Table 21, only two have less than 10
branchial filaments where the branchiae arc best developed. Of
these two species, E. manihine and E. rubrocincta, the former
has branchiae present from setiger 8, the latter has branchiae
from setiger 3.
174. Eunice rullieri, new name
FIGURE 99f-j; TABLES 27.28
Eunice aphroditois punctata Fishelson and Rullicr, 1969:74-76, fig. 2a-c.
MATERIAL EXAMINED.—Two syntypes. Zoological Museum,
Tel-Aviv University, 7134 and 7563, Cundabilu, Red
Sea.
DESCRIPTION.—Large syntype (7563) complete with 72
setigers; total length 24 mm; maximal width 3 mm; length
through setiger 10, 5 mm. Other syntype with 49 setigers;
length 15 mm; maximal width 3 mm; length through setiger 10,
4 mm. Remaining color pattern a grayish brown base color,
with 3 rows of large white blotches dorsally. Body rather wide
anteriorly, tapering to slender posterior end, basically conical
with both dorsal and ventral side convex. Anal cirri long,
subdistally inflated.
Prostomium (Figure 990 distinctly shorter and narrower
than peristomium, as deep as x h of peristomium. Prostomial
lobes frontally rounded, dorsally inflated; median sulcus deep.
Eyes at bases of A-II, small. Antennae in a horseshoe, evenly
spaced, similar in thickness. Ceratophores ring-shaped in all
antennae, without articulations. Ceratostyles thick and digitiform,
without articulations. Three median antennae to posterior
peristomial ring; A-I to middle of anterior peristomial ring.
Peristomium cylindrical with thickened yoke forming nuchal
fold; lower lip thickened and slightly set off from rest of
peristomium. Separation between rings distinct only dorsally;
anterior ring 5 /6 of total peristomial length. Peristomial cirri to
posterior edge of anterior peristomial ring, ovate, without
articulations.