A Review of the Genus Eunice - Smithsonian Institution Libraries

96 SMITHSONIAN CONTRIBUTIONS TO ZOOLOGY
than peristomium, less than V2 as deep as peristomium.
Prostomial lobes frontally rounded, dorsally excavate with
thickened rim; median sulcus deep, directed ventrally. Eyes not
observed. Antennae in a shallow horseshoe, evenly spaced;
A-III slimmer than other antennae. Ccratophorcs long in all
antennae, without articulations. Ccratostyles digiliform, without
articulations. No antennae reaching beyond first peristomial
ring; A-I shortest; A-III longest, but difference in length less
than one-third of length of longest antenna. Peristomium flared
anteriorly, with distinct, muscular lower lip. Separation
between rings distinct on all sides; anterior ring ~ 2 /3 of total
peristomial length. Peristomial cirri to posterior ! /3 of first
peristomial ring, without articulations, tapering, less than half
as long as A-I.
Jaws now missing. Maxillary formula 1+1, 3+3, 6+0, 6+4,
and 1+1 according to Trcadwell (1921:56).
Branchiae (Figure 28d) present, palmate, distinctly longer
than notopodial cirri, not reduced in mid-body region, erect.
Branchiae from setiger 18 to end of fragments. Branchiae
present to near posterior end, present on more than 65% of total
number of setigers. First 3 branchiae single filaments; most
branchiae with paired filaments; in a posterior fragment up to 3
filaments present. Branchial stems very short and truncate.
Filaments long, strap-like.
All neuropodial acicular lobes asymmetrically truncately
rounded; aciculae emerging above midline. All presetal lobes
low folds. All postsetal lobes free, rounded to truncate
projecting lobes, visible behind acicular lobes. First 20 ventral
cirri thick, tapering. Median ventral cirri moderately inflated
basally; narrow tips digitiform. Posterior ventral cirri tapering,
digitiform. Notopodial cirri of first setiger short, digitiform,
without articulations. All other notopodial cirri basally inflated,
without articulations.
Limbate setae longer than all other setae, coarse, gently
curved, marginally serrated. Shafts of pectinate setae (Figure
28f) cylindrical, slender; blades flared, flat. Both marginal teeth
slightly longer than other teeth; total of -15 teeth present.
Shafts of compound falcigers (Figure 28e) distinctly inflated,
internally striated, marginally nearly smooth, with distinct
distal beak. Appendages long, tapering; head large, bidentate.
Proximal teeth triangular, directed laterally; distal teeth slightly
shorter than proximal teeth, sharply tapering, directed laterally.
Guards symmetrically rounded, marginally smooth, without
mucros. Pseudocompound falcigers and compound spinigers
absent. Aciculae (Figure 28b) single, with dark cores and clear
sheaths, tapering towards blunt, slightly curved tips. Subacicular
hooks (Figure 28c) with dark cores and clear sheaths,
bidentate (nearly bifid). Hooks first present from setiger 34,
present in all setigers thereafter, always single (except for
replacements). Hooks tapering abruptly just below head.
Proximal teeth narrower than distal teeth; both teeth directed
distally.
UKNOWN MORPHOLOGICAL FEATURES.—Presence and position
of eyes; relationship between Mx III and left Mx IV;
pygidium and anal cirri.
EXPECTED STATE 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, 56, 58, 59. Unknown
Characters: 1,2, 13, 14, 36,40, 42.
ASSUMED STATES FOR PURPOSE OF PREPARING KEY.—
None.
REMARKS.—Eunice bucciensis was considered a synonym
of E. afra by Hartman (1956). In E. bucciensis branchiae arc
palmate with very long filamcnLs; in E. afra branchiae arc
distinctly pectinate. The antennae lack articulations in E.
bucciensis and have distinct, cylindrical articulations in E. afra.
Eunice bucciensis is listed with similar species in Tables 33 and
39. Among the species in Table 39, E. bucciensis and E.
denticulata stand out for having elevated, long ccratophorcs.
Eunice bucciensis has A-III slimmer than the other antennae
and branchiae first present from sctiger 18; in E. denticulata, all
antennae arc similar and branchiae are not present until sctigcr
27.
Eunice burmeisteri Grubc, 1878
Eunice (Marphysa) Burmeisteri Grubc. 1878a: 101.
REMARKS.—Grubc listed this species as a possible synonym
of Marphysa sanguinea and indicated that it was named by
Fritz Miillcr in a letter to him. As far as can be ascertained, no
description of the species was ever issued, nor does any
material exist. Due to the reference by Grube (1878a) of the
possible synonymy with Marphysa sanguinea, the species
must be considered indeterminable rather than a nomen nudum;
the issue will be considered further in a planned review of the
genus Marphysa.
36. Eunice caeca Shisko, 1981
FIGURE 29a-f; TABLES 19, 20
Eunice caeca Shisko, 1981:968-971, fig. la-f, table 1.
MATERIAL EXAMINED.—Holotype, USNM 63065, Bureau
of Land Management sta 24774BFI, off Tanner Bank,
California, 32°49.8'N, 119°29.86'W, 1357 m, trawl.
DESCRIPTION.—Holotype complete with 90 setigers; last 7
in regeneration; total length 103 mm; maximal width 6 mm at
setiger 10. Length through setiger 10, 14 mm. Body ventrally
flattened, dorsally moderately inflated throughout, slightly
wider in branchial region than in postbranchial region, abruptly
tapering anteriorly, slowly tapering posteriorly; regenerating
end abruptly narrower than remainder of body. Anal cirri
slender, digitiform, without articulations.
Prostomium (Figure 29a) distinctly shorter and narrower
than peristomium, less than x li as deep as peristomium.
Prostomial lobes frontally rounded, dorsally flattened; median