A Review of the Genus Eunice - Smithsonian Institution Libraries

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162 SMITHSONIAN CONTRIBUTIONS TO ZOOLOGY FIGURE 52.—Eunice grubei (holotype, MNHN, Paris): a, subacicular hook, parapodium 42; b, pectinate seta, parapodium 42; c, compound falciger, parapodium 49; d, compound falciger, parapodium 42; e.anterior end, lateral view. Eunice guanica (holotype, AMNH 1915-1342): f, anterior end, lateral view; g, posterior parapodium, anterior view; h, compound falciger, posterior parapodium; i, pectinate seta, posterior parapodium; j, subacicular hook, posterior parapodium. (Scale bars in mm.)
NUMBER 523 163 Prostomium (Figure 52f) distinctly shorter and narrower than peristomium, as deep as V2 of peristomium. Prostomial lobes short, frontally rounded, dorsally inflated; median sulcus short. Antennae in a nearly complete circle and directed forwards, evenly spaced, similar in thickness. Ceratophores ring-shaped in all antennae, without articulations. Ceratostyles digitiform, with 2 or 3 cylindrical articulations in A-II and A-III. A-I to middle of anterior peristomial ring; A-II to middle of anterior peristomial ring; A-III to posterior edge of anterior peristomial ring. Peristomium more than twice as long as prostomium, cylindrical with a ventral depression anteriorly. Peristomium divided ventrally into 3 equally long parts; posteriormost of these parts distinct also dorsally representing posterior peristomial ring, separation indistinct laterally. Peristomial cirri barely reach front edge of posterior peristomial ring, tapering, without articulations. Jaws missing. Branchiae present, distinctly longer than notopodial cirri, not reduced in mid-body region. Branchiae from setiger 19 to sctigcr 224. Branchiae present to near posterior end, present on more than 65% of total number of setigers. First 10 branchiae single filaments, thereafter some segments with 2 filaments, others with single filaments, up to 'A of segments in branchial region, without branchiae. Branchiae very long (Figure 52g), slender, digitiform, outreaching notopodial cirri in all but a few posterior branchial segments. Anterior neuropodial acicular lobes distally symmetrically rounded; posterior acicular lobes triangular with prominently projecting aciculae; aciculae emerging at midline. All presetal lobes low transverse folds. Anterior postsetal lobes higher than acicular lobes, distally rounded; postsetal lobes reduced to low folds by beginning of branchial region. First 6-7 ventral cirri digitiform. Ventral cirri becoming basally inflated in median setigers. Bases ovate; narrow tips short and button-shaped. Inflated bases continued through rest of body. Notopodial cirri tapering, similar in length except shorter in first 2 segments. Notopodial cirri without articulations. Limbate setae slender, marginally frayed. Pectinate setae (Figure 52i) relatively large, but very delicate, flaring, flat. Both marginal teeth distinctly longer than other teeth, with 15 teeth. Shafts of compound falcigers (Figure 52h) distally inflated, marginally smooth. Appendages tapering; head small, bidentate. Proximal teeth considerably larger than distal teeth, tapering, directed slightly distally. Distal teeth gently curved, tapering. Guards symmetrically rounded; mucros absent. Pseudocompound falcigers and compound spinigers absent. Aciculae single, black, distally tapering to blunt, straight tips; cross-sections round. Subacicular hooks (Figure 52j) black, bidentate. Hooks first present from setiger 36, present in all setigers thereafter, always single (except for replacements). Hooks abruptly tapered with small heads; both teeth directed distally, very small, blunt. UNKNOWN MORPHOLOGICAL FEATURES.—Jaw structure; 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: 34, 56, 60. Unknown Characters: 13, 14,40, 74, 78. ASSUMED STATES FOR PURPOSE OF PREPARING KEY.— None. REMARKS.—Eunice guanica is listed with similar species in Tables 33 and 36. It is one of three species in Table 36 in which the bases of the ventral cirri remain inflated through posterior setigers; the other two species are E. cirrobranchiata and E. excariboea. In the latter the branchiae do not start until setigers 78-79; in the two former, branchiae are present from about setigers 19 and 28 respectively. In E. cirrobranchiata at least some of the subacicular hooks are tridentate with the teeth in tandem; all subacicular hooks are bidentate in E. guanica. Eunice guildingi Baird, 1869:351. 81. Eunice guildingi Baird, 1869 FIGURE 53a -e; TABLES 27,31 MATERIAL EXAMINED.—Holotype, BM(NH) 1839.12.27.5, St. Vincent, West Indies. DESCRIPTION.—Holotype complete, of unknown sex, with 258 setigers; total length 138 mm; maximal width 6 mm at setiger 10; length through setiger 10, 7 mm. Prostomium (Figure 53a) distinctly shorter and narrower than peristomium, less than x li as deep as peristomium. Prostomial lobes frontally rounded, dorsally inflated; median sulcus deep. Eyes not observed. Antennae in horseshoe, evenly spaced, similar in thickness. Ceratophores ring-shaped in all antennae, without articulations. Ceratostyles digitiform; A-I without articulations; A-II and A-III with up to 7 long, cylindrical articulations. A-I to posterior peristomial ring. A-II to posterior edge of setiger 1; A-III to setiger 2. Peristomium slightly flaring anteriorly, with distinct muscular lower lip. Separation between rings distinct on all sides; anterior ring ~ 3 A of total peristomial length. Peristomial cirri to middle of prostomium, slender and digitiform, without articulations. Maxillary formula 1+1, 5+5, 7+0, 6+8, and 1+1. Branchiae (Figure 53e) present, pectinate, distinctly longer than notopodial cirri, not reduced in mid-body region, erect. Branchiae from setiger 5 to setiger 236. Branchiae terminating well before posterior end, more than 65% of total number of setigers. First branchia with 3 filaments; maximum 11 filaments at setiger 15. From about setiger 40 number of filaments reduced rapidly and by setiger 60 2 filaments remaining. Last 20 branchiae single filaments. Posterior to setiger 50 filaments short and easily overlooked. Branchial stems slender, cylindrical, longer than notopodial cirri. Filaments filiform, longer than notopodial cirri. Anterior neuropodial acicular lobes broadly rounded; median and posterior acicular lobes asymmetrically rounded;
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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,
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 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: NUMBER 523 161 79. Eunice grubei Gr
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
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 215 and 216: NUMBER 523 203 TABLE 6.—Variable
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
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NUMBER 523 213 TABLE 7.—Variable
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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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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 523 277 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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REQUIREMENTS FOR SMITHSONIAN SERIES
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