A Review of the Genus Eunice - Smithsonian Institution Libraries

NUMBER 523 213
TABLE 7.—Variable and invariable features in the type lot of Eunice marovoi (N
examined; SD = standard deviation; measurements in mm).
number of individuals
VARIABLE FEATURES
No. of setigers
Total length
Maximal width
Length through 10
Last branchiae on setiger no.
Max. no. of branchial filaments
Ventral cirri inflated through setiger no.
No. of notopodial articulations
Subacicular hooks first present from setiger no.
N
5
5
5
5
5
5
3
4
5
Max.
61
13
1
3
24
5
25
3
19
Min.
46
7
0.5
1.5
19
3
20
2
10
Mean
56.2
10.7
0.9
2.29
22
4.2
23.33
225
15.6
SD
5.38
2.18
0.2
0.54
1.90
0.75
2.36
0.43
3.38
INVARIABLE FEATURES
Antennal articulations
Peristomial cirral articulations
Branchiae first present from setiger no.
Pectinate setae
No. of teeth in pectinate setae
Shaft of compound falcigers
Color of aciculae
Acicular tip
Color of subacicular hooks
No. of teeth in subacicular hooks
Core-sheath separation
N=5
absent
absent
3
tapering
10
inflated
yellow
tapering; straight
yellow
3
indistinct
CHARACTERS USED IN PREPARATION OF KEY NOT
SCORED.—Inappropriate Characters: 22, 56, 60. Unknown
Characters: 4, 6,42, 65-68.
ASSUMED STATES FOR PURPOSE OF PREPARING KEY.—
None.
REMARKS.—Eunice marovoi was described with bluntly
rounded guards to compound hooks and with branchiae
extended to setigers 23-25; as indicated above, guards are
mucronate and branchiae are not found on any segment later
than 22 in the specimens examined. The dentition of the jaws is
remarkable and may represent a juvenile dentition. The shape
of the subacicular hooks also resembles the condition found in
juvenile specimens. None of the specimens are sexually
mature.
Eunice marovoi is listed with similar species in Tables 41
and 45. It is the only species known to combined nonarticulated
ceratostyles with multiple subacicular hooks.
118. Eunice martensi Grube, 1878
Eunice martensi Grube, 1878a:102.
FIOURE 70g-j; TABLES 46,47
MATERIAL EXAMINED.—Holotype, ZMB 923, Zamboanga,
Philippines, coll. v. Martens.
COMMENTS ON MATERIAL EXAMINED.—The specimen is
very poorly preserved and no meaningful illustrations of soft
parts are possible.
DESCRIPTION.—Holotype complete with 168 setigers; total
length 220 mm; maximal width 6 mm; length through setiger
10, 14 mm. Body apparently cylindrical, slowly tapering
posteriorly.
Prostomium distinctly shorter than peristomium. Median
sulcus very shallow. Eyes between bases of A-I and A-II.
Ceratophores ring-shaped in all antennae, without articulations.
Ceratostyles digitiform, with up to 10 cylindrical articulations
in A-II. Only right A-I and A-II complete. A-I to anterior
peristomial ring; A-II to setiger 1. Peristomium cylindrical.
Separation between rings distinct dorsally and ventrally;
anterior ring 3 /4 of total peristomial length. Peristomial cirri to
posterior end of prostomium, slender and digitiform, with 5
articulations.
Maxillary formula 1+1, 6+6, 10+0, 9+10, and 1+1. Mx III
long, located behind left Mx II. Mx VI absent.
Branchiae present, pectinate, distinctly longer than notopodial
cirri, not reduced in mid-body region, erect. Branchiae
from setiger 6 to setiger 163. Branchiae present to near
posterior end, present on more than 65% of total number of
setigers. All branchiae pectinate with up to 16 filaments at
setigers 15-20. Branchial stems very thick, tapering, erect.
Filaments short, digitiform. Number of filaments decreasing
posteriorly; 6 filaments in setiger 150. No increase in number
of filaments, length of filaments, or of branchial stem towards
posterior end.
All neuropodial acicular lobes apparently truncate or
rounded; aciculae emerging at midline. All pre- and postsetal
lobes low, transverse folds. Anterior ventral cirri tapering,
becoming moderately basally inflated in some median setigers.
Inflated bases ovate; narrow tips tapering. Posterior ventral cirri
without basal inflation, tapering. All notopodial cirri basally