A Review of the Genus Eunice - Smithsonian Institution Libraries

88 SMITHSONIAN CONTRIBUTIONS TO ZOOLOGY
31. Eunice borneensis Grube, 1878
FIGURE 24; TABLES 27, 31
Eunice (Eriphyle) borneensis Grube, 1878a: 102.
MATERIAL EXAMINED.—Three syntypes, ZMB F2033,
North Borneo.
COMMENTS ON MATERIAL EXAMINED.—All three syntypes
are complete, one is in two pieces; they vary from 103 to 129
setigers and from 40 to 64 mm in length. The syntype described
is the largest of the complete syntypes.
DESCRIPTION.—Syntype with 120 setigers; total length 42
mm; maximum width 6 mm at about setiger 50. Length through
setiger 10,7 mm; width at setiger 10,4.5 mm. Anterior body up
to about setiger 30 cylindrical, becoming dorsoventrally
flattened, strongly flattened near posterior end.
Prostomium (Figure 24a) distinctly shorter than and narrower
than peristomium, less than x li as deep as peristomium.
Prostomial lobes frontally truncate, dorsally flattened; median
sulcus deep. Eyes not observed. Antennae in a shallow
horseshoe, evenly spaced, similar in thickness. Ceratophorcs
ring-shaped in all antennae, without articulations. Ceratostyles
slender and tapering; maximum 6 cylindrical articulations in
A-II and A-111. A-I to middle of peristomium; A-II and A-111 to
setiger 2. Peristomium massive and muscular; cylindrical.
Separation between rings distinct dorsally and ventrally,
indistinct only in narrow section laterally; anterior ring 6 /i of
total peristomial length. Lower lip scalloped. Peristomial cirri
to middle of anterior peristomial ring, slender and tapering,
with 3 indistinct, cylindrical articulations (not shown in
illustration).
Maxillary formula 1+1, 4+4, 7+0, 5+11, and 1+1. Teeth of
Mx II very large and coarse compared to other teeth.
Branchiae (Figure 24b) present, pectinate, distinctly longer
than notopodial cirri, not reduced in mid-body region, flexible.
Branchiae from setiger 6 to setiger 120. Branchiae present to
near posterior end, present on more than 65% of total number
of setigers. First branchia with 3 filaments; maximal number of
filaments 9 by setiger 15; last 10 setigers with single filaments.
Branchial stem as thick as filaments, short, flexible, tapering.
Filaments digitiform, longer than notopodial cirri.
Anterior acicular lobes (Figure 24c) broadly, asymmetrically
truncate with aciculae emerging above midline. Median and
posterior neuropodial acicular lobes narrowly, asymmetrically
rounded with aciculae emerging above midline. All presetal
lobes low truncate folds. Anterior postsetal lobes free, truncate,
longer than acicular lobe, becoming rounded in posterior
setigers, but remaining longer than acicular lobes in all setigers.
Four first ventral cirri thick, tapering. Ventral cirri basally
inflated from about setiger 5. Inflated bases thick, transverse
welts in all remaining setigers; narrow tips of ventral cirri
small, nearly button-shaped. All notopodial cirri basally
inflated with distinct rounded basal tubercular protuberance,
without articulations.
Limbate setae longer than other setae, slender, nearly
straight, limbations narrow, marginally smooth. Pectinate setae
(Figure 24g) short; shafts slender, cylindrical; blades flaring,
fiat. One marginal tooth longer than other teeth; total of -15
teeth. Shafts of compound falcigcrs (Figure 24e) distally
inflated, marginally smooth, with distinct distal beak. Appendages
short, thick, barely tapering; heads large, bidentate.
Proximal teeth tapering, directed laterally; distal teeth about as
long as proximal teeth, but thicker, tapering, directed laterally.
Guards asymmetrically bluntly pointed, marginally smooth,
without mucros. Pscudocompound falcigcrs and compound
spinigers absent. Aciculae paired anteriorly; 3 aciculae from
about setiger 50, black, tapering, with narrowly blunt tips
(Figure 24d), gently curved or straight; cross-section round.
Subacicular hooks black (Figure 241), bidentate. Hooks first
present from sctigcr 30-35, present in all setigers thereafter,
single in most setigers, up to 3 in a few sctigcrs. Both teeth
directed distally; proximal teeth slightly larger than distal teeth.
UKNOWN MORPHOLOGICAL FEATURES.—Relation between
Mx III and left Mx IV; pygidium and anal cirri.
EXPECTED STATE OF UNKNOWN MORPHOLOGICAL FEA-
TURES.—Mx III short, located in front of left Mx IV; forming
part of distal arc.
CHARACTERS USED IN PREPARATION OF KEY NOT
SCORED.—Inappropriate Characters: 56, 60. Unknown
Characters: 13,14,74,78.
ASSUMED STATES FOR PURPOSE OF PREPARING KEY.—
None.
REMARKS.—Eunice borneensis is listed with similar species
in Tables 27 and 31. It appears to differ from other species
listed in Table 31 especially in the presence of well-developed
postsetal lobes, in the shape of the notopodial cirri, and in
having the ventral cirri basally inflated to the posterior end.
32. Eunice bottae Quatrefages, 1866
FIGURE 25; TABLES 46,47
Eunice bottae Quatrefages, 1866:320.—Grube, 1870a:292.
MATERIAL EXAMINED.—Holotype, MNHN, Paris, A.1(R.)-
1868-no. 55b, Red Sea, coll. Botta.
DESCRIPTION.—Holotype incomplete with 60 setigers;
length 28 mm; maximum width 2 mm at about setiger 40.
Length through setiger 10,7 mm; width at setiger 10,1.75 mm.
Body slender, cylindrical, becoming somewhat dorsally flattened
towards posterior end.
Prostomium (Figure 25a) distinctly shorter and narrower
than peristomium, as deep as '/2 of the peristomium. Prostomial
lobes irregularly rounded, dorsally flattened; median sulcus
shallow; frontal groove marking off palpal region present. Eyes
not seen. All antennae incomplete, except left A-I, in a shallow
horseshoe, evenly spaced, similar in thickness. Ceratophores
ring-shaped in all antennae, without articulations. Ceratostyles
digitiform with maximum 15 moniliform articulations in A-I 11.