A Review of the Genus Eunice - Smithsonian Institution Libraries

NUMBER 523 161
79. Eunice grubei Gravier, 1900
FIGURE 52a-«; TABLES 27,32
Eunice grubei Gravier, 1900:258-261. figs. 125-129, pi. 14: figs. 87, 88.
MATERIAL EXAMINED.—Holotype, MNHN, Paris, Djibouti,
H. Coutiere no. 29, 1897.
COMMENTS ON MATERIAL EXAMINED.—The holotype has
been mildly dehydrated at one time.
DESCRIPTION.—Holotype incomplete, of unknown sex, with
55 setigers; length 42 mm long; maximal width 6 mm at setiger
10; length through setiger 10, 12 mm. Body cylindrical
throughout
Prostomium (Figure 52e) distinctly shorter and narrower
than peristomium, as deep as */2 of peristomium. Prostomial
lobes frontally rounded, dorsally inflated; median sulcus
shallow. Eyes not observed. Antennae in shallow horseshoe,
evenly spaced, similar in thickness. Ceratophores ring-shaped
in all antennae, without articulations. Ceratostyles tapering,
with up to 8 cylindrical articulations, articulations basally
cylindrical becoming drop-shaped distally. A-I to posterior
peristomial ring; A-I I and A-I 11 to setiger 1. Peristomium
cylindrical with distinct muscular lower lip. Separation
between rings distinct dorsally and ventrally, and invisible on
short lateral section; anterior ring 5 /6 of total peristomial length.
Peristomial cirri to middle of anterior peristomial ring, slender
and digitiform with 5 long, drop-shaped articulations.
Maxillary formula 1+1, 5+5,7+0,6+9, and 1+1. Mx III part
of distal arc with very short left Mx IV. Mx VI absent.
Branchiae present, pectinate, distinctly longer than notopodial
cirri, not reduced in mid-body region, erect. Branchiae
from setiger 3 to end of fragment. First branchiae single
filaments, maximum 8 filaments at about setiger 20; number of
filaments decreasing posteriorly; 4 or 5 filaments in each
branchia in last segments. Branchial stems thick, tapering, as
long as notopodial cirri. Filaments digitiform, shorter than
notopodial cirri.
Neuropodial acicular lobes distally truncate; aciculae emerging
at midline. Pre- and postsetal lobes transverse folds;
presetal lobes shorter than acicular lobes; postsetal lobes nearly
as long as acicular lobes. First 5 ventral cirri large, nearly
triangular, tapering to blunt tips. Ventral cirri basally inflated
from setiger 6 through setiger 30. Inflated bases modest, ovate,
in relation to large, tapering tips. Posterior to setiger 30 ventral
cirri very broadly attached ventral to neuropodial acicular
lobes, tapering to blunt tips; attachment point slightly posterior
to emergence of subacicular hooks, forming incomplete scoops
around lower edge of neuropodia. Notopodial cirri basally
inflated, tapering to digitiform tips. Prebranchial notopodial
cirri with 4 or 5 indistinct articulations; all other notopodial
cirri without articulations.
Limbate setae marginally smooth or slightly frayed. Pectinate
setae (Figure 52b) tapering, gently furled. Both marginal
teeth thicker than other teeth; one marginal tooth distinctly
longer than other teeth, with -15 teeth. Shafts of compound
falcigers (Figure 52c,d) tapering, marginally smooth. Appendages
short, tapering, with large heads, bidentate. Proximal teeth
smaller than distal teeth, conical to nearly triangular, directed
laterally or slightly distally. Distal teeth tapering, curved,
directed laterally. Guards asymmetrically bluntly pointed,
marginally smooth; mucros absent. Pseudocompound falcigers
and compound spinigers absent Aciculae numbering 2 or 3,
amber to dark brown, thick, distally blunt, gently curved or
straight; cross-sections round. Subacicular hooks (Figure 52a)
amber to dark brown, bidentate. First few hooks light amber
and easily overlooked. Hooks first present from setiger 24,
present in all setigers thereafter, usually single, paired in some
setigers. Hooks with narrow neck and distinct head. Proximal
teeth large, directed laterally. Distal teeth smaller than proximal
teeth, directed obliquely distally.
UNKNOWN MORPHOLOGICAL FEATURES.—Relationship between
Mx III and left Mx IV; pygidium and anal cirri.
EXPECTED STATES OF SELECTED UNKNOWN FEATURES.—
Mx III short and forming part of distal arc with left Mx IV.
CHARACTERS USED IN PREPARATION OF KEY NOT
SCORED.—Inappropriate Characters: 56, 58, 59. Unknown
Characters: 1, 2, 13, 14, 36-38,40,47, 50, 63, 74, 78.
ASSUMED STATES FOR PURPOSE OF PREPARING KEY.—37,1;
38,1.
REMARKS.—Eunice grubei is listed with similar species in
Tables 27 and 32. It is the only species listed in Table 32 that
combines branchiae starting from setiger 3 with articulated
notopodial cirri limited to the anterior end; in the other species
in the table with branchiae from setiger 3, the notopodial cirri
are articulated throughout.
Eunice grunwaldi (Risso, 1826)
Leodice GrunwaldiRisso, 1826:423— Fauvel, 1923:451.
Eunice Grunwaldi.—-Grube, 1850:292.
REMARKS.—Grube (1850) referred this species to his section
of Eunice without tentacular cirri (his "Leodicae Marphysae
Sav."); Fauvel (1923) referred the species to Marphysa. The
species will be further considered in a planned review of that
genus.
80. Eunice guanica (Treadwell, 1921)
FIGURE 52f-i; TABLES 33,36
Leodice guanica Treadwell, 1921: 39-40, figs. 107-116, pi. 2: figs. 9-12.
Eunice afra.—Hartman, 1956:282 [not Eunice afra Peters, 1854].
MATERIAL EXAMINED.—Holotype, AMNH 1915-1342,
Sand Key, Key West, Florida.
DESCRIPTION.—Holotype complete, of unknown sex, with
224 setigers; total length 100 mm; maximal width 4 mm at
setiger 10; length through setiger 10, 7 mm. Body anteriorly
cylindrical with very short parapodia.