A Review of the Genus Eunice - Smithsonian Institution Libraries

210 SMITHSONIAN CONTRIBUTIONS TO ZOOLOGY
thick; tapering, becoming basally inflated from about setiger
12; inflated bases retained to about setiger 100. Inflated bases
long transverse welts; narrow tips tapering. Posterior ventral
cirri tapering. Anterior notopodial cirri distinctly medially
inflated, becoming short and strongly tapering from about
setiger 75, without articulations.
Limbate setae slender, marginally serrated. Pectinate setae
(Figure 691) large, flaring, flat. Both marginal teeth longer than
other teeth; -20 teeth present Shafts of compound falcigers
(Figure 69i) distinctly inflated, marginally serrated. Appendages
slender, narrow, with nearly parallel sides, bidentate.
Proximal and distal teeth similar in size. Proximal teeth
tapering, directed laterally. Distal teeth curved. Guards symmetrically
rounded; mucros absent. Pseudocompound falcigers
and compound spinigers absent. Aciculae (Figure 69k) dark
brown, tapering to blunt, distally rounded tips, straight;
cross-sections round. Subacicular hooks (Figure 69j) dark
brown, unidentate. Hooks first present from setiger 38, present
in all setigers thereafter, always single (except for replacements).
Tips more or less gently curved, slightly asymmetrical
in some setigers, but no trace of secondary teeth seen.
Notopodial aciculae light brown.
UNKNOWN MORPHOLOGICAL FEATURES.—Features associated
with the far posterior end.
EXPECTED STATES OF UNKNOWN MORPHOLOGICAL FEA-
TURES.—None.
CHARACTERS USED IN PREPARATION OF KEY NOT
SCORED.—Inappropriate Characters: 22, 33, 34, 39, 40,42,
56, 58, 59. Unknown Characters: 1,2,4, 6, 36-38,64, 78.
ASSUMED STATES FOR PURPOSE OF PREPARING KEY.—37,1;
38,1.
REMARKS.—Eunice marenzelleri is listed with similar
species in Tables 33 and 37. It is the only species in Table 37
with simple, spine-like subacicular hooks. It is listed with other
species with simple spine-like subacicular hooks in Table 50. It
is the only species in Table 50 with exclusively single branchial
filaments.
Eunice margaritacea Williams, 1853
Eunice margaritacea Williams, 1853:408, fig. 4.
REMARKS.—The article in which this species was named
concerns mechanisms of aquatic respiration in invertebrates.
The species name is mentioned in the caption to an illustration
showing the pectinate branchial structure of a eunicid. The
discussion in the text gives no additional information about the
species, other than indicating that it presumably was found in
Great Britain, nor is the disposition of any material mentioned.
The species is indeterminable; the name is here considered a
nomen nudum, making the combination available.
Eunice margaritacea (Verrill, 1900)
Leodice margaritacea Verrill, 1900:644-645.
Leodice longicirrata.—Treadwell, 1921:11-14, figs. 3-12, pi. 1: figs. 1-4
[not Nicidion longicirrata Kinberg, 1865).
Eunice longicirrata.—Hartman, 1942:9 (in part, not Nicidion longicirrata
Kinberg. 1865].
REMARKS.—The types of this species are no longer available
in the collections of the Peabody Museum (W. Hartman, in
litt.). It is not clear whether Hartman (1942:9) saw any
specimens of this species when she examined the type
collections of that museum. She referred to TrcadweH's
treatment of the species. Treadwell (1921:11-14) clearly did
not see Verrill's types; on page 14 he stated: "From comparison
of his descriptions with specimens of longicirrata collected by
myself in Bermuda, in the locality where [Verrill] records
margaritacea as abundant, I am convinced that [elegans and
margaritacea] are identical with longicirrata." I am inclined to
believe that the spccimcn(s) on which Vcrril! based his species
were missing already by 1920.
The only descriptive detail available, namely that branchiae
arc present from setigers 3-4 and end at sctigcrs 45-50 with up
to 5 branchial filaments, is consistent with TrcadweH's
conclusion and with Webster's species, also originally described
from Bermuda. Webster's name is preoccupied and his
species was renamed Eunice websteri by Fauchald (1969). The
synonymy proposed by Treadwell is here accepted. VerriH's
name is valid because the previously published combination
Eunice margaritacea Williams (1853) is a nomen nudum (see
above).
116. Eunice margariticacea Fischli, 1900
TABLES 46,47
Eunice margariticacea Fischli. 1900:104-106. pi. 4: figs. 8, 9. pi. 6: figs. 35,
36, pi. 7: figs. 55-58.
COMMENTS ON MATERIAL EXAMINED.—The types, from
Temate in the Moluccas, are not available. Fischli's description
and illustrations are quite detailed; the following summary of
his findings updates his terminology.
DESCRIPTION.—Medium-size specimen with 95 segments;
length 14 mm. Ceratostyles with up to 30 moniliform
articulations in A-III. A-III to setiger 7. Peristomium cylindrical.
Separation between peristomial rings distinct on all sides.
Peristomial cirri to posterior edge of prostomium, with up to 7
articulations.
Maxillary formula 1+1, 5+5, 7+0, 5+7, and presumably 1+1.
Mx III long, located behind left Mx II.
Branchiae present, pectinate, reduced in mid-body region,
erect. Branchiae from setiger 6 to setiger 95. Branchiae present
to near posterior end, present on more than 65% of total number
of setigers. Maximum 5 filaments at about setiger 10.
Mid-body setigers in 1 specimen with single filaments;
posterior setiger with 2-3 filaments.
Ventral cirri basally strongly inflated in median setigers, less
distinctly inflated in far posterior setigers. Inflated bases nearly
spherical. Notopodial cirri with up to 5-7 articulations, most
distinct anteriorly, but present in all setigers.