A Review of the Genus Eunice - Smithsonian Institution Libraries

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130 SMITHSONIAN CONTRIBUTIONS TO ZOOLOGY EXPECTED STATES OF UNKNOWN MORPHOLOGICAL FEA- TURES.—Mx III short, forming part of distal arc with left Mx IV. CHARACTERS USED IN PREPARATION OF KEY NOT SCORED.—Inappropriate Characters: 56, 60. Unknown Characters: 1,2,4, 6, 33, 36-40, 51, 58, 59, 74, 78, 81, 82. ASSUMED STATES FOR PURPOSE OF PREPARING KEY.—33,2; 37,1; 38,1. REMARKS.—Eunice eimeorum differs clearly from E. pacifica in the distribution of branchiae, which are present from setiger 5 in E. eimeorum and from setiger 17-21 in E. pacifica. Clear amber subacicular hooks are present from setiger 38 in E. eimeorum and dark brown, nearly black subacicular hooks present from setigers 23-28 in E. pacifica. The specimens of the two species are similar in size. Eunice eimeorum is listed with similar species in Tables 27 and 31. The appendage of compound hooks resembles the compound hooks of E. pelamidis. 58. Eunice elegans (Verrill, 1900) FIGURE 41a-k; TABLES 24,25 Leodice elegans Verrill, 1900:640-641. Leodice longicirrata.—Treadwell, 1921:11-14, figs. 3-12, pi. 1: figs. 1-4 [not Eunice longicirrata Webster, 1884]. Eunice longicirrata.—Hartman, 1942:9 [not Eunice longicirrata Webster, 1884]. MATERIAL EXAMINED.—Holotype, YPM 2730, Bermuda, low [shallow] water, Apr 1898, coll. A.E. Verrill and party. DESCRIPTION.—Holotype complete, of unknown sex, with 133 setigers; total length 75 mm; maximal width 3 mm at setiger 10; length through setiger 10, 8 mm. Body cylindrical anteriorly, becoming ventrally flattened posteriorly. Prostomium (Figure 41b) distinctly shorter and narrower than peristomium, as deep as l li of peristomium. Prostomial lobes frontally obliquely truncate, flattened dorsally and ventrally; median sulcus very shallow. Eyes between bases of A-I an A-II. Antennae in a horseshoe, evenly spaced. Ceratophores long in all antennae, without articulations. Only left A-II present (Figure 41a), now detached, digitiform, with 9 short, but distinctly cylindrical articulations, to setiger 2. Peristomium cylindrical, about twice as long as prostomium. Separation between rings distinct on all sides, but especially well marked dorsally and ventrally; anterior ring 3 /4 of total peristomial length. Peristomial cirri to middle of prostomium, tapering, with 4 indistinct articulations. Jaws not examined. Branchiae (Figure 41c) present, pectinate, distinctly longer than notopodial cirri, not reduced in mid-body region, erect. Branchiae from setiger 3 through setiger 33. Branchiae terminating well before posterior end, present on less than 55% of total number of setigers. First and last branchiae single filaments; maximum 10 filaments at setiger 10-15. Branchiae covering dorsum where best developed. Stems slender, erect. Filaments trim, slender, shorter than notopodial cirri. Anterior neuropodial acicular lobes rounded, becoming increasingly conical posteriorly (Figure 4Id); aciculae emerging above midline. Pre- and postsetal lobes low, transverse folds. First 4 ventral cirri tapering. Ventral cirri basally inflated from setiger 5 through about setiger 50. Inflated bases ovate; narrow tips tapering. Posterior ventral cirri broadly attached, tapering to blunt tips, forming very shallow, open scoops around ventral margin of neuropodia. Notopodial cirri supported by aciculae; anterior notopodial cirri basally inflated and indistinctly separated into 4 articulations. Articulations lost in first few setigers of branchial region; notopodial cirri becoming slender and tapering from first postbranchial setigcrs, retaining that shape to the end. Limbate setae slender, marginally finely serrated. Pectinate setae (Figure 41c,j) tapering, flat. One marginal tooth longer than other teeth, about, 10 teeth present; anterior pectinate setae somewhat asymmetrical, becoming symmetrical in postbranchial region. Shafts of anterior compound falcigers (Figure 41k) tapering, becoming gently inflated (Figure 410 in postbranchial setigcrs, marginally smooth; beaks indistinct. Anterior appendages tapering; heads indistinct, bidentatc. Proximal teeth very much shorter than distal teeth, triangular. Distal teeth tapering, nearly erect. Guards asymmetrically bluntly pointed. Postbranchial appendages short, with large heads. Proximal teeth and distal teeth similar in size; proximal teeth tapering, directed basally. Distal teeth smoothly curved. Guards symmetrically rounded; all guards marginally smooth; mucros absent. Pseudocompound falcigers and compound spinigers absenL Neuropodial aciculae paired, dark yellow to amber-colored; anterior aciculae (Figure 41 i) distally expanded into rounded knobs; postbranchial aciculae (Figure 41h) sharply tapered; superior aciculae gently curved dorsally; cross-section round. Separation between core and sheath indistinct in both aciculae and subacicular hooks. Subacicular hooks (Figure 41g) amber-colored, bidentate. Hooks first present from setiger 30, present in all setigers thereafter, usually 2-3 hooks in a parapodium. Hooks with narrow necks and distinct heads. Proximal teeth twice as large as the distal teeth, triangular, directed laterally. Distal teeth tapering, erect. Guards distally truncate. 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: 56, 60. Unknown Characters: 17,23. ASSUMED STATES FOR PURPOSE OF PREPARING KEY.— None. REMARKS.—Eunice elegans resembles E. websteri (= E. longicirrata Webster) but differs in the changing shape of the aciculae and compound hooks in different parts of the body, and also in the maximum number of branchial filaments and
NUMBER 523 131 1 2 .5 1 1 a h d h, i. o, p c. 1 FIGURE 41.—Eunice elegans (holotype, YPM 2730): a, detached ceratostyle; b, anterior end, lateral view; c, parapodium 7, anterior view; d, parapodium 53, anterior view; e, pectinate seta, parapodium 53; f, compound falciger, parapodium 53; g, subacicular hook, parapodium 43; h, aciculae, parapodium 53; i, aciculae, parapodium 7; j, pectinate seta, parapodium 7; k, compound falciger, parapodium 7. Eunice elseyi (syntype, BM(NH) ZH 1857.11.18.249): 1, parapodium 103, anterior view; m, anterior end, lateral view; n, pectinate seta, parapodium 103; o, subacicular hook, parapodium 103; p, aciculae, parapodium 103; q, appendage of compound falciger, parapodium 103. (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
Page 91 and 92: NUMBER 523 79 FIGURE 20.—Eunice b
Page 93 and 94: NUMBER 523 81 been unable to see th
Page 95 and 96: NUMBER 523 83 in 120-150 m depth. T
Page 101 and 102: NUMBER 523 89 FlOURE 24.—Eunice b
Page 103 and 104: NUMBER 523 91 compound falcigcrs (F
Page 105 and 106: NUMBER 523 93 EXPECTED STATE OF UNK
Page 109 and 110: NUMBER 523 97 FIGURE 29.—Eunice c
Page 111 and 112: NUMBER 523 99 TABLE 3.—Variable a
Page 113 and 114: NUMBER 523 101 characters, best exp
Page 115 and 116: NUMBER 523 103 diagnostic." As indi
Page 117 and 118: NUMBER 523 105 FIGURE 31.—Eunice
Page 119 and 120: NUMBER 523 107 very short. Shafts s
Page 121 and 122: NUMBER 523 109 Presetal lobes low,
Page 123 and 124: NUMBER 523 111 which are similar to
Page 125 and 126: NUMBER 523 113 45. Eunice complanat
Page 127 and 128: NUMBER 523 FIGURE 35.—Eunice cong
Page 129 and 130: NUMBER 523 117 REMARKS.—Eunice co
Page 131 and 132: NUMBER 523 119 50. Eunice curticirr
Page 133 and 134: NUMBER 523 121 Anterior neuropodial
Page 135 and 136: NUMBER 523 123 a wide triangular ba
Page 139 and 140: NUMBER 523 127 55. Eunice edwardsi
Page 141: NUMBER 523 129 reduced, but still v
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 and 186: 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
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NUMBER 523 181 FIGURE 59.—Eunice
Page 195 and 196:
NUMBER 523 183 transverse folds. Al
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NUMBER 523 185 CHARACTERS USED IN P
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NUMBER 523 187 • 02 .5 ] .1 2 .5
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NUMBER 523 189 02 FIGURE 62.—Euni
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NUMBER 523 191 .02 1 .1 e. t, q h.
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Page 207 and 208:
NUMBER 523 195 FlOURE 65.—Eunice
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NUMBER 523 197 Peristomial cirri to
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NUMBER 523 201 near posterior end,
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NUMBER 523 203 TABLE 6.—Variable
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NUMBER 523 207 falcigers agree well
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NUMBER 523 209 cirri, not reduced i
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NUMBER 523 211 Limbate setae margin
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Page 227 and 228:
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NUMBER 523 217 EXPECTED STATES OF U
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NUMBER 523 221 articulations in A-1
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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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Page 279 and 280:
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 523 277 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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