A Review of the Genus Eunice - Smithsonian Institution Libraries

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174 SMITHSONIAN CONTRIBUTIONS TO ZOOLOGY mm long; the current specimen, labeled as type, is larger, as indicated below. It is unclear how this discrepancy has arisen: it is here assumed that a simple lapsus has taken place and that specimen here described in fact is the holotype. DESCRIPTION.—Holotype incomplete, of unknown sex, with 138 setigers; length 30 mm; maximal width 2 mm at setiger 10; length through setiger 10, 3.5 mm. Prostomium (Figure 56j) distinctly shorter and narrower than peristomium, as deep as x li of peristomium. Prostomial lobes frontally rounded, somewhat flattened dorsally; median sulcus very deep. Eyes behind bases of A-I, kidney-shaped, black. Antennae in horseshoe, evenly spaced, similar in thickness. Ceratophores ring-shaped in all antennae, without articulations. Ceratostyles medially inflated with irregular notches, but without articulations. A-I to middle of anterior peristomial ring; A-II and A-III to posterior end of peristomium. Peristomium longer than prostomium, cylindrical. Separation between rings distinct on all sides; anterior ring ~ 2 h of total peristomial length. Peristomial cirri barely to front edge of posterior peristomial ring, digitiform, without articulations. Maxillary formula 1+1,5+5, 7+0,6+9, and presumably 1+1; Mx V apparently absent in preparation (see comment below). Distal tooth of both Mx II with small subdistal notches, indicating possible presence of reduced sixth tooth. Branchiae absent. Anterior neuropodial acicular lobes short, distally rounded, becoming sessile in median and posterior setigers (Figure 56n); aciculae emerging above midline. Pre- and postsetal lobes low, transverse folds. Anterior ventral cirri digitiform, becoming basally inflated by setiger 10. Ventral cirri retaining inflated bases through rest of body, but inflated bases increasingly retracted into body wall. Narrow tips short and button-shaped in median setigers, becoming distinct and tapering in far posterior setigers. Anterior notopodial cirri tapering and about twice as long as ventral cirri, increasing in length through median setigers. Notopodial cirri reduced in length from about setiger 50, becoming short and tapering in far posterior setigers, located well above neuropodia on body wall. Notopodial cirri without articulations. Pectinate setae (Figure 56m) tapering, flat. Both marginal teeth longer than other teeth; -10 teeth present. Shafts of compound falcigers (Figure 561) slender, distally strongly inflated, marginally strongly serrated; distinct beak present. Appendages very short, with nearly parallel sides; heads small, bidentate. Both teeth similar in size. Proximal teeth slender, tapering, directed laterally. Distal teeth tapering, directed laterally. Guards symmetrically rounded, marginally serrated; mucros absent. Pseudocompound falcigers and compound spinigers absent. Aciculae (Figure 56n) single, with black core and clear sheath, thick, distally tapering, straight; crosssections round. Subacicular hooks (Figure 56k) with black core and clear, nearly translucent heads, bidentate. Hooks first present from setiger 50, present in all setigers thereafter, always single (except for replacements). Hooks with distinctly bent necks; heads distinct. Proximal teeth larger than distal teeth, curved, directed laterally. Distal teeth triangular, tapering, directed 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: 22, 31-42, 56, 60. Unknown Characters: 1, 2. ASSUMED STATES FOR PURPOSE OF PREPARING KEY.— None. REMARKS.—Eunice imogena is compared to similar species in Tables 33 and 40. It is unique among the abranchiate species in that subacicular hooks are first present from sctigcr 50; in the other species, subacicular hooks arc present from sctigcrs 16-31. The maxillary formula was given by Monro (1924:62) in the following words: "formula as follows: 4-4:7+57-9." The illustration given by Monro (1924, fig. 24) shows the formula to be 1+1, 5+5, 7+0, 6+9. The jaws arc now missing; Monro's illustration suggests a less aberrant formula than the text and is here assumed to approximate the condition in the species. 89. Eunice impexa Grube, 1878 FIGURE 57i-m; TABLES 52,53 Eunice impexa Grube, 1878b: 159-160. pi. 9: Tig. 6. MATERIAL EXAMINED.—Holotype, ZMB 4001, Cape of Lapinig, Philippines, coll. Semper. COMMENTS ON MATERIAL EXAMINED.—Four parapodia removed from the holotype were also available; two of these were previously examined by Grube, the other two by Augener. DESCRIPTION.—Holotype incomplete, of unknown sex, with 101 setigers; length 63 mm; maximal width 5.5 mm at setiger 10; length through setiger 10, 11 mm. Prostomium (Figure 57a) distinctly shorter than peristomium, distinctly narrower than peristomium, less than x li as deep as peristomium. Prostomial lobes frontally rounded, dorsally flattened; median sulcus shallow. Eyes present posterior to bases of A-I, faded purple. Antennae in horseshoe, evenly spaced, similar in thickness. Ceratophores ring-shaped in all antennae, without articulations. Ceratostyles tapering, with 1 or 2 irregular, cylindrical articulations. A-I to anterior peristomial ring; A-II to posterior peristomial ring; A-III to setiger 1. Peristomium massive, expanded anteriorly due to eversion of jaws; muscular lower lip present. Separation between rings distinct ventrally and visible dorsally; anterior ring 3 /4 of total peristomial length. Peristomial cirri to middle of anterior peristomial ring, digitiform, without articulations. Maxillary formula 1+1, 5+4, 5+0, 2+5, and 1+1. Mx III short, forming a distal arc with very short left Mx IV and MX V. Mx VI absent.
NUMBER 523 175 FIGURE 57.—Eunice impexa (holotype, ZMB 4001): a, anterior end, lateral view; b, pectinate seta, parapodium 45; c, compound spiniger, parapodium 15; d, adcula, parapodium 15; e, parapodium 15, anterior view; f, inferior subacicular hook, posterior parapodium; g, median subacicular hook, posterior parapodium; h, superior subacicular hook, posterior parapodium; i, parapodium 45, anterior view; j, notopodium and branchia, parapodium 60-70; k, notopodium and branchia, parapodium 65, drawn in situ; 1, pectinate seta, posterior parapodium; m, compound falciger, posterior parapodium. Eunice indica (holotype, RM 435): n, anterior end, lateral view; o, subacicular hook, parapodium 27; p, compound falciger, parapodium 27; q, compound falciger, parapodium 3. (Scale bars in mm.)
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* A Review of the Genus Eunice (Pol
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S M I T H S O N I A N C O N T R I B
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Contents Page Introduction 1 Nomenc
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NUMBER 523 Eunice brevis (Ehlers, 1
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NUMBER 523 vii Eunice longicirris G
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NUMBER 523 ix Eunice stanleyi, new
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A Review of the Genus Eunice (Polyc
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NUMBER 523 (1820) are exemplary as
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NUMBER 523 included, but not specie
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NUMBER 523 subsequent workers. They
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NUMBER 523 illustrations. Seial len
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NUMBER 523 11 uniformly yellowish g
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NUMBER 523 13 to the frontal jaws (
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NUMBER 523 15 be longer than the ot
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NUMBER 523 17 rounded lobe about as
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NUMBER 523 19 Both outgroup species
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NUMBER 523 21 By "near posterior en
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NUMBER 523 23 69. dentition of appe
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NUMBER 523 25 Eunice djiboutiensis
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NUMBER 523 27 pauper a Grube, 1878b
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NUMBER 523 29 length of antennae in
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NUMBER 523 31 peristomium rubra 32(
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NUMBER 523 33 sulcus shallow tentac
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NUMBER 523 35 Peristomial cirri dig
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NUMBER 523 37 peristomial cirri dig
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NUMBER 523 39 Branchiae palmate [Fi
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NUMBER 523 41 .1 .05 1 5 d b c FIGU
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NUMBER 523 43 .02 .1 c, d FIGURE 4.
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NUMBER 523 45 and 49. In addition t
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NUMBER 523 47 4. Eunice afra Peters
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NUMBER 523 49 median antennae simil
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NUMBER 523 51 afuerensis and E. pel
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NUMBER 523 53 reaching beyond anter
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NUMBER 523 55 .02 .1 1 b. c d FIGUR
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NUMBER 523 57 FIGURE 10.—Eunice a
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NUMBER 523 59 TABLE 2.—Variable a
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NUMBER 523 61 .02 .5 .5 .1 2 e. f,
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NUMBER 523 63 .02 1 .1 f, y, h C FI
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NUMBER 523 65 midline. Pre- and pos
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NUMBER 523 67 Subacicular hooks (Fi
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NUMBER 523 69 REMARKS.—Eunice arm
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NUMBER 523 71 REMARKS.—Eunice art
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NUMBER 523 73 FIGURE 17.—Eunice a
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NUMBER 523 75 • 02 , d a FIGURE 1
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NUMBER 523 77 Proximal teeth larger
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NUMBER 523 79 FIGURE 20.—Eunice b
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NUMBER 523 81 been unable to see th
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NUMBER 523 83 in 120-150 m depth. T
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NUMBER 523 89 FlOURE 24.—Eunice b
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NUMBER 523 91 compound falcigcrs (F
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NUMBER 523 93 EXPECTED STATE OF UNK
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NUMBER 523 97 FIGURE 29.—Eunice c
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NUMBER 523 99 TABLE 3.—Variable a
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NUMBER 523 101 characters, best exp
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NUMBER 523 103 diagnostic." As indi
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NUMBER 523 105 FIGURE 31.—Eunice
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NUMBER 523 107 very short. Shafts s
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NUMBER 523 109 Presetal lobes low,
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NUMBER 523 111 which are similar to
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NUMBER 523 113 45. Eunice complanat
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NUMBER 523 FIGURE 35.—Eunice cong
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NUMBER 523 117 REMARKS.—Eunice co
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NUMBER 523 119 50. Eunice curticirr
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NUMBER 523 121 Anterior neuropodial
Page 135 and 136: NUMBER 523 123 a wide triangular ba
Page 137 and 138: NUMBER 523 125 FIGURE 39.—Eunice
Page 139 and 140: NUMBER 523 127 55. Eunice edwardsi
Page 141 and 142: NUMBER 523 129 reduced, but still v
Page 143 and 144: NUMBER 523 131 1 2 .5 1 1 a h d h,
Page 145 and 146: NUMBER 523 133 cirri did not reach
Page 149 and 150: NUMBER 523 137 J .02 .1 1 a c, e d
Page 151 and 152: NUMBER 523 139 .0 2 1 2 1 .1 .5 1 h
Page 153 and 154: NUMBER 523 141 peristomium. Prostom
Page 155 and 156: NUMBER 523 143 shorter than filamen
Page 159 and 160: NUMBER 523 147 TABLE 5.—Variable
Page 163 and 164: NUMBER 523 151 .02 1 1 .1 f. g, h b
Page 165 and 166: NUMBER 523 153 complete specimen).
Page 167 and 168: NUMBER 523 155 branchiae is rare in
Page 169 and 170: NUMBER 523 157 Limbate and pectinat
Page 171 and 172: NUMBER 523 159 indistinct in both a
Page 173 and 174: NUMBER 523 161 79. Eunice grubei Gr
Page 175 and 176: NUMBER 523 163 Prostomium (Figure 5
Page 177 and 178: NUMBER 523 165 24, present in all s
Page 181 and 182: NUMBER 523 169 85. Eunice hawaiensi
Page 183 and 184: NUMBER 523 171 105 setigers; total
Page 185: NUMBER 523 173 dorsally and especia
Page 189 and 190: NUMBER 523 177 Filaments slender. N
Page 191 and 192: NUMBER 523 179 tween Mx III and lef
Page 195 and 196: NUMBER 523 183 transverse folds. Al
Page 197 and 198: NUMBER 523 185 CHARACTERS USED IN P
Page 199 and 200: NUMBER 523 187 • 02 .5 ] .1 2 .5
Page 201 and 202: NUMBER 523 189 02 FIGURE 62.—Euni
Page 203 and 204: NUMBER 523 191 .02 1 .1 e. t, q h.
Page 207 and 208: NUMBER 523 195 FlOURE 65.—Eunice
Page 209 and 210: NUMBER 523 197 Peristomial cirri to
Page 213 and 214: NUMBER 523 201 near posterior end,
Page 219 and 220: NUMBER 523 207 falcigers agree well
Page 221 and 222: NUMBER 523 209 cirri, not reduced i
Page 223 and 224: NUMBER 523 211 Limbate setae margin
Page 229 and 230: NUMBER 523 217 EXPECTED STATES OF U
Page 233 and 234: NUMBER 523 221 articulations in A-1
Page 235 and 236: NUMBER 523 223 J32 J b, c, d a FIGU
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NUMBER 523 225 1 10 b, d, e, g. h,
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NUMBER 523 227 126. Eunice multicyl
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Page 243 and 244:
Page 245 and 246:
NUMBER 523 233 tion between rings d
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NUMBER 523 235 ASSUMED STATES FOR P
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NUMBER 523 237 visible ventrally; a
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NUMBER 523 241 proximally cylindric
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NUMBER 523 243 digitiform. Anterior
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NUMBER 523 245 Eunice oliga papeete
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NUMBER 523 247 h. i FIGURE 82.—Eu
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NUMBER 523 249 DESCRIPTION.—Body
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NUMBER 523 253 the type, there is l
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NUMBER 523 255 directed laterally,
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NUMBER 523 257 2 1 .1 b, c, », h d
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NUMBER 523 259 RGURE 86.—Eunice p
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NUMBER 523 261 colored, tridentate
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NUMBER 523 263 papeetensis has expa
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NUMBER 523 267 These two species ar
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NUMBER 523 269 MATERIAL EXAMINED.
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NUMBER 523 271 evenly spaced, simil
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NUMBER 523 273 TABLE 13.—Variable
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NUMBER 523 277 Peristomial cirri to
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NUMBER 523 279 18+0, 12+12, and 1+1
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NUMBER 523 281 than peristomium, as
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NUMBER 523 285 167. Eunice reducta
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NUMBER 523 287 articulations. Grube
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NUMBER 523 291 antennae, without ar
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NUMBER 523 295 Jaws not examined. B
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NUMBER 523 297 posiscial lobes low,
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NUMBER 523 299 ASSUMED STATES FOR P
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NUMBER 523 303 smaller specimens. M
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NUMBER 523 305 thereafter, always s
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NUMBER 523 307 The ceratostyles lac
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NUMBER 523 311 184. Eunice stigmatu
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NUMBER 523 313 Eunice stigmalura is
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NUMBER 523 31! .1 .5 a, b, c t n h
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NUMBER 523 317 Hartman (1956, as E.
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NUMBER 523 319 REMARKS.—Eunice th
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NUMBER 523 321 without articulation
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NUMBER 523 325 from setiger 5 throu
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NUMBER 523 327 appendages long, kni
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NUMBER 523 329 superior aciculae li
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NUMBER 523 331 b. c, e, f, g, h. i,
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NUMBER 523 333 paratype consisted o
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NUMBER 523 337 always single (excep
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NUMBER 523 341 1 .05 I 1 h a FIGURE
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NUMBER 523 343 3 A of total peristo
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NUMBER 523 345 Characters: 1, 2, 13
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NUMBER 523 347 TABLE 21.—Comparis
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Appendix A Character List for Eunic
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NUMBER 523 377 4. digitiform 5. cla
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NUMBER 523 379 5.03 13.U 14,U 15,3
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NUMBER 523 381 16.07 16.08 16.09 17
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NUMBER 523 383 28.01 biformicirrata
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NUMBER 523 385 39.03 39.04 39.05 39
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NUMBER 523 387 50.07 50.08 50.09 51
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NUMBER 523 389 62.01 62.02 62.03 62
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NUMBER 523 391 73.04 73.05 73.06 73
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NUMBER 523 393 84.07 84.08 84.09 85
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NUMBER 523 395 96.01 kerguelensis 9
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NUMBER 523 397 107.04 25,3 26,3 27,
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NUMBER 523 399 118.07 118.08 118.09
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NUMBER 523 401 130.01 mutilata 130.
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NUMBER 523 403 141.03 15.U 16,U 17.
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NUMBER 523 405 152.05 35,5 36,28 37
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NUMBER 523 407 164.07 164.08 164.09
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NUMBER 523 409 176.01 savignyi 176.
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NUMBER 523 411 187.04 24,U 25,4 26.
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NUMBER 523 413 198.07 55,2 56- 58-
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Appendix C Important publications o
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NUMBER 523 417 1919c. Pacific Coast
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NUMBER 523 419 Videnskabers Selskab
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NUMBER 523 421 38:1-74,37 figures.
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