A Review of the Genus Eunice - Smithsonian Institution Libraries

134
SMITHSONIAN CONTRIBUTIONS TO ZOOLOGY
b. c
FIGURE 42.—Eunice equibranchiata (holotype, BM(XH) ZK. 1885.12.1.202): a, appendage of compound
falciger, b, acicula; c, subacicular hook; d, parapodium; all from medium setigers. (Scale bars in mm.)
Subacicular hooks (Figure 43c,e) yellow, tridentate with teeth
in a crest. Hooks first present from setiger 18, present in all
setigers thereafter, always single (except for replacements).
Hooks with large curved main fangs. Secondary fangs
triangular. Tertiary fangs very small, erect.
UNKNOWN MORPHOLOGICAL FEATURES.—Jaw structure;
pygidium and anal cirri.
EXPECTED STATES OF SELECTED UNKNOWN FEATURES.—
Mx III long, located behind left Mx II.
CHARACTERS USED IN PREPARATION OF KEY NOT
SCORED.—Inappropriate Characters: 14, 22, 56, 58, 59.
Unknown Characters: 1, 2, 38, 42, 63.
ASSUMED STATES FOR PURPOSE OF PREPARING KEY.—38,2.
REMARKS.—Eunice eugeniae is listed with similar species in
Tables 41 and 45. It is the only species in Table 45 in which the
branchiae are no longer than the notopodial cirri; in the other
species the branchiae distinctly outreach the notopodial cirri.
61. Eunice excariboea, new species
FIGURE 43i-o; TABLES 33,36
Eunice cariboea Grube, 1856:57 [in part].
MATERIAL EXAMINED.—Holotype and 1 paratype, ZMC
(uncataloged), St. Croix, West Indies, coll. H. Kroyer (part of
original material of E. cariboea Grube).
COMMENTS ON MATERIAL EXAMINED.—The holotype is the
larger of the two specimens examined.
DESCRIPTION.—Holotype incomplete, of unknown sex, with
136 setigers; length 34 mm; maximal width 2 mm at setiger 10;
length through setiger 10, 3.7 mm. Anterior part of body
including prostomium and peristomium cylindrical. Body
widening rapidly through first few setigers, becoming nearly
twice as wide as prostomium by setiger 10, slightly dorsoventrally
flattened with parapodia elevated on low lateral ridges.