A Review of the Genus Eunice - Smithsonian Institution Libraries

NUMBER 523 133
cirri did not reach beyond the peristomium and were nearly or
completely smooth. The notopodial cirri had weakly indicated
articulations.
The maxillary formula was 1+1, 13+13, 11+0, 10-11+11,
and presumably 1+1. The number of teeth indicated is
confused; if the above interpretation is correct, the species
would have a maxillary formula similar to species in group C-2,
with which it was associated by Hartman (1944).
No information is given about the structure or distribution of
the setae.
The species may belong to group C-2, but is insufficiently
characterized to allow accurate designation. The type has been
lost for a long time. Hartman (1938) did not include it in her
annotated list of types in the Museum of Comparative Zoology,
nor is there any evidence available that she saw the type at a
later stage. The species is here considered indeterminable.
Hartman (1938) indicated that the type was collected at
Mendocino, California; however, in Chamberlin (1918) the
type locality is not specified. A statement in the introduction to
Chamberlin's paper indicates that his material came from
Pacific Grove, California, in shallow water or intertidally,
rather than from Mendocino.
Eunice equibranchiata Mclntosh, 1885
FIGURE 42
Eunice equibranchiata Mclntosh, 1885:291-292, pi. 39; fig. 11, pi. 20A: figs.
23,24.
MATERIAL EXAMINED.—Holotype, BM(NH) ZK.
1885.12.1.202. Brazil, 9°5'-9°10'S, 34°49'-34°53'W, 640,
219, 59, and 732 m, mud, 10 Sep 1873, Challenger sta 202.
DESCRIPTION.—Holotype and only known specimen is a
middle piece of about 300 segments; length 250 mm.
Prostomium, peristomium and jaws unknown.
Branchiae long, slender; up to 3 filaments of similar lengths;
all segments present branchiated.
Neuropodial acicular lobes (Figure 42d) conical. Pre- and
postsetal lobes follow outline of acicular lobes closely. Ventral
cirri digitiform with distinct, but low basal inflations on
adjoining body wall. Notopodial cirri tapering, slender, without
articulations, at least twice as long as ventral cirri.
Most setae broken. Shafts of compound hooks distally
inflated. Appendages (Figure 42a) short. Both teeth very well
developed, directed laterally. Guards symmetrically rounded,
marginally serrated. Aciculae (Figure 42b) single, with dark
cores and clear sheaths, distally asymmetrically hammerheaded.
Subacicular hooks (Figure 42c) with dark cores and
clear, translucent heads. Hooks strongly curved, with large
heads. Both teeth curved, directed laterally.
REMARKS.—The structures of E. equibranchiata that can be
examined resemble the corresponding features in E. filamentosa
and related species, but the exact relationship cannot be
determined. The species is here considered indeterminable.
60. Eunice eugeniae, new species
FIGURE 43a-h. TABLES 41, 45
Eunice havaica Kinbcrg, 1865:562 [in part].
MATERIAL EXAMINED.—Holotype, part of RM 430, Honolulu,
Hawaii, Eugenie Expedition 1087-89 (one specimen from
type lot of E. havaica).
DESCRIPTION.—Holotype incomplete, of unknown sex, with
55 setigers; length 18 mm; maximal width 1 mm at setiger 10;
length through setiger 10,4 mm.
Prostomium (Figure 43a) about as long as peristomium,
about as wide as peristomium, deeper than V2 of the
peristomium. Prostomial lobes frontally rounded, dorsally
inflated; median sulcus shallow. Peristomial fold forming 2
transverse yokes across back of prostomium. Eyes absent.
Antennae in shallow horseshoe, evenly spaced; A-I thicker than
A-II and A-I 11. Ceratophores ring-shaped in all antennae,
without articulations. Ceratostyles slightly tapering, without
articulations. A-I to middle of anterior peristomial ring; A-II
antennae to setiger 1; A-I 11 to setiger 4. Peristomium
cylindrical. Separation between rings distinct on all sides;
anterior ring little more than x /i of total peristomial length.
Peristomial cirri to front margin of peristomium, digitiform,
without articulations.
Jaws not examined.
Branchiae present, pectinate, about as long as notopodial
cirri, not reduced in mid-body region, erect. Branchiae from
setiger 4 through setiger 44. Branchiae terminating well before
posterior end. First 4 and last 2 or 3 branchiae single filaments;
maximum 5 filaments. Stems strong, erect, shorter than
notopodial cirri. Filaments digitiform, shorter than notopodial
cirri.
Anterior neuropodial acicular lobes distally truncate,
rounded in last segments present; aciculae emerging at midline.
Pre- and postsetal lobes low, transverse folds. First 3 ventral
cirri thick, tapering. Ventral cirri basally inflated from first
branchial segments through about setiger 25. Bases ovate;
narrow tips tapering. Ventral cirri digitiform in last setigers
present. Prebranchial notopodial cirri basally inflated and
tapering, becoming increasingly digitiform through branchial
region and in postbranchial setigers.
Limbate setae slender. Pectinate setae (Figure 430 flaring,
flat. Both marginal teeth longer than other teeth, with about 15
teeth. Shafts of compound falcigers (Figure 43b,g) inflated
distally, marginally finely or coarsely serrated; distal beaks
distinct Appendages tapering, with small heads, bidentate.
Proximal teeth smaller than distal teeth, triangular to reduced
triangular, directed laterally. Distal teeth short, gently curved or
erect. Guards distally pointed, with distinct mucros, marginally
serrated. Pseudocompound falcigers and compound spinigers
absent. Aciculae (Figure 43d,h) single, yellow, tapering, gently
curved; cross-section round. Separation between core and
sheath indistinct in both aciculae and subacicular hooks.