A Review of the Genus Eunice - Smithsonian Institution Libraries

206 SMITHSONIAN CONTRIBUTIONS TO ZOOLOGY
transverse folds. First 5 ventral cirri thick, digitiform. Ventral
cirri basally inflated from about setiger 6 through setiger 30,
inflated bases ovate; narrow tips tapering. Posterior ventral cirri
digitiform. All notopodial cirri with 5 to 6 irregular articulations.
Anterior notopodial cirri thick, digitiform. Posterior
notopodial cirri relatively larger than anterior ones, becoming
very prominent in far posterior setigers.
Limbate setae slender. Pectinate setae (Figure 68f) tapering,
flat. Both marginal teeth slightly larger than other teeth, -10
teeth present. Shafts of compound falcigers inflated, marginally
smooth. Appendages (Figure 68d) long, bidentate. Proximal
teeth much larger than distal teeth, triangular, directed laterally.
Distal teeth tapering, nearly erect or gently curved. Guards
symmetrically bluntly pointed; mucros absent. Pseudocompound
falcigers and compound spinigers absent Aciculae
numbering up to 3, with black cores and clear sheaths, tapering
to blunt tips; ventralmost aciculae gently curved in most
parapodia; cross-sections round. Subacicular hooks (Figure
68b,c) with dark brown to black cores and clear sheaths,
bidentate. Hooks first present from setiger 26 or 30, present in
all setigers thereafter, always single (except for replacements).
Proximal teeth about twice as large as distal teeth, directed
laterally.
UNKNOWN MORPHOLOGICAL FEATURES.—Pygidium and
anal cirri.
EXPECTED STATES OF UNKNOWN MORPHOLOGICAL FEA-
TURES.—None.
CHARACTERS USED IN PREPARATION OF KEY NOT
SCORED.—Inappropriate Characters: 56, 58, 59. Unknown
Characters: 4,6,15.
ASSUMED STATES FOR PURPOSE OF PREPARING KEY.—
None.
REMARKS.—Hartman (1964:118, pi. 36: figs. 8-10) referred
E. magellanica to E. frauenfeldi, which it resembles in many
respects. Note that Hartman's illustrations were redrawn from
Mclntosh's original description of E. magellanica and most of
the text was taken from Mclntosh as well; thus Hartman's
description does not, except as the two species are identical,
refer to Grube's E. frauenfeldi. The two species appear to differ
most clearly in the distribution of branchiae. In E. frauenfeldi
the maximum number of filaments is -3 at setigers 15-25; In
E. magellanica the maximum number of filaments is -20 near
setiger 85. These and other species in group B-2 are compared
in Tables 27 and 29.
112. Eunice magnifica Grube, 1866
Eunice magnifica Grube, 1866a:64.
FIGURE 68g-k; TABLES 33,37-39
MATERIAL EXAMINED.—Holotype, ZMB F1993 (marked
E. bipapillata), Samoa, 2 parapodia.
COMMENTS ON MATERIAL EXAMINED.—The identity of the
two parapodia examined was discussed above in the section of
E. bipapillata.
REMARKS.—The following is a summary of Grube's original
description combined with notes on the two parapodia.
Type incomplete with 102 setigers; about 100 mm in length;
violet-copper-colored with white spots.
Branchiae present, pectinate, distinctly longer than notopodial
cirri, erecL Branchiae from setiger 22, with up to 8
filaments.
One parapodium from an anterior segment (Figure 68g),
probably before setiger 15 of a large specimen, with neuropodial
acicular lobe distally transverse; aciculae emerging at
midline. Presetal lobe a low fold; postsctal lobe a high ridge
behind acicular lobe. Notopodial cirrus basally slightly
inflated, tapering to a digitiform tip; ventral cirrus thick, with a
thick, blunt tip, without articulations.
The other parapodium is distorted and cannot be described in
detail; it docs not appear to have been remarkably different
from usual pattern in genus. Notopodium is similar to the one
present in the other parapodium and a very large branchia is
present (Figure 68k); it has a strong branchial stem and 8
distinct branchial filaments. Ventral cirrus without basal
inflation; tapering. The label indicates that this parapodium
should be from segment 96; this agrees with the shape of
acicular lobe and ventral cirrus. The branchial development is
unusual for such a late segment, but may be related to the
apparent very large size of the specimen.
Pectinate setae (Figure 68h) tapering in both parapodia. One
marginal tooth distinctly longer than other teeth; 12 teeth
present. Shafts of compound falcigers (Figure 68i,j) distally
inflated, with smooth cutting edge; distal beak indistinct.
Appendages slender, tapering with large head anteriorly; with
small heads posteriorly, bidentate. Proximal teeth triangular in
anterior setigers, slender and tapering posteriorly, directed
laterally or slightly distally. Distal teeth nearly erect, nearly
triangular in anterior setigers, slender and tapering in posterior
setigers. Guards asymmetrically bluntly pointed; mucros
absent. Pseudocompound falcigers and compound spinigers
absent. Aciculae single, dark, bluntly conical, straight; crosssections
round. Separation between core and sheath distinct in
both aciculae and subacicular hooks. Subacicular hook present
in branchiated parapodium, single, dark, distally broken so the
dentition cannot be determined.
CHARACTERS USED IN PREPARATION OF KEY NOT
SCORED.—Inappropriate Characters: 58, 59. Unknown
Characters: 1-29, 33, 36-40, 42, 46, 47, 49-51, 53-56, 62,
80-82.
ASSUMED STATES FOR PURPOSE OF PREPARING KEY.—
None.
REMARKS.—The first parapodium described should be from
setiger 26, according to the label. This would be the beginning
of the branchial region; it is, however, distinctly from a
prebranchial setiger. The number of the parapodia may have
been confused, but the structure of aciculae and compound