A Review of the Genus Eunice - Smithsonian Institution Libraries

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304 SMITHSONIAN CONTRIBUTIONS TO ZOOLOGY FIGURE 103.—Eunice segregata (USNM 19153): a, anterior end, lateral view; b, parapodium 3, anterior view; c, compound falciger, parapodium 3; d, pectinate seta, parapodium 3; e, parapodium 21, anterior view; f, compound falciger, parapodium 21; g, pectinate seta, parapodium 21; h, parapodium 75, anterior view; i, compound falciger, parapodium 75; j, aciculae, parapodium 75; k, subacicular hook, parapodium 75; 1, pectinate seta, parapodium 75. (Scale bars in mm.)
NUMBER 523 305 thereafter, always single (except for replacements). Hooks tapering towards small heads. Proximal teeth nearly twice as large as distal teeth, directed laterally. Distal teeth nearly erect. UNKNOWN MORPHOLOGICAL FEATURES.—Pygidium and anal cirri. EXPECTED STATES OF UNKNOWN MORPHOLOGICAL FEA- TURES.—None CHARACTERS USED IN PREPARATION OF KEY NOT SCORED.—Inappropriate Characters: 56, 58, 59. Unknown Characters: 1, 2,47, 50,63. ASSUMED STATES FOR PURPOSE OF PREPARING KEY.— None. REMARKS.—Eunice segregata is listed with similar species in Tables 19 and 20. Of species in Table 20 with branchiae starting from setiger 3, two species, E. biannulata and E. kobiensis, have eight branchial filaments where the branchiae are best developed; one species, E. caeca has 24 filaments; the other species have from 11 to 18 filaments. Of the remaining species, E. mexicana, E. pennata, and E. websteri have distally drop-shaped to moniliform articulations of the ceratostyles; E. segregata and E. valens have cylindrical articulations throughout. The two peristomial rings are distinct on all sides in E. segregata: the separation are distinct only dorsally and ventrally in E. valens. The relationship between this species and similar species was also explored in Fauchald (1969). 180. Eunice semisegregata Fauchald, 1969 FIGURE 104a-d; TABLES 19, 21 Eunice semisegregata Fauchald, 1969:8-10, fig. 4a-e. Leodice segregata Chamberlin. 1919a:237-240, pi. 54: figs. 1-4 [in part]. MATERIAL EXAMINED.—Paratype, USNM 19398, Albatross sta 3417, off southwestern Mexico, 16 o 32'00"N, 99°48'(XTW, 11 Apr 1891, 902 m, green mud, small beam trawl. DESCRIPTION.—Paratype incomplete with 84 setigers; length 55 mm; maximal width 6 mm; length through setiger 10,9 mm. Body cylindrical, slightly flattened posteriorly, essentially truncate anteriorly. Prostomium (Figure 104d) distinctly shorter and narrower than peristomium, less than 1 /2 as deep as peristomium. Prostomial lobes frontally rounded, dorsally inflated; median sulcus deep. Eyes posterior to bases of A-I. Antennae in a horseshoe, evenly spaced, similar in thickness. Ceratophores ring-shaped in all antennae, without articulations. Ceratostyles slender and tapering, with up to 8 cylindrical articulations in A-III. A-I to middle of anterior peristomial ring; A-I I to setiger 4; A-III to setiger 5. Peristomium inflated, barrel-shaped. Separation between rings distinct on all sides; anterior ring 2 /3 of total peristomial length. Peristomial cirri to middle of anterior peristomial ring, slender and digitiform, without articulations. Maxillary formula 1+1, 8+9, 10+0, 9+9, and 1+1. Mx III long, located behind left Mx II. Mx VI absent. Branchiae (Figure 104a) present, pectinate, distinctly longer than notopodial cirri, not reduced in mid-body region, erect. Branchiae from setiger 3 to setiger 65 in paratype and 69 in holotype. Branchiae terminating well before posterior end, present on less than 55% of total number of setigers. All branchiae pectinate; maximum 38 filaments from about setiger 15. Branchial stems slender, tapering, erect. Filaments slender, nearly filiform. Neuropodial acicular lobes symmetrically rounded, rather broadly in anterior setigers, becoming nearly conical in median and posterior setigers (Figure 104a); aciculae emerging at midline. Pre- and postsetal lobes low, transverse folds. First 4 ventral cirri thick and tapering. Ventral cirri basally inflated from about setiger 5 through setiger 40; inflated bases totally missing by setiger 50. Inflated bases modest, ovate, narrow tips tapering. Posterior ventral cirri slender and tapering. Anterior notopodial cirri about as thick as antennae, tapering. In branchial region notopodial cirri slender and tapering from slightly inflated bases. Postbranchial notopodial cirri slender, nearly filiform. Notopodial cirri without articulations. Limbate setae marginally serrated. Pectinate setae (Figure 104c) tapering, flat. One marginal tooth longer and thicker than other teeth; 7 teeth present. Shafts of compound falcigers (Figure 104c) distally inflated, marginally serrated. Appendages long, tapering towards small heads, bidentate. Proximal teeth smaller than distal teeth, short, broadly triangular, directed laterally. Distal teeth gently curved, tapering. Guards symmetrically sharply pointed, marginally serrated; mucros absent. Pseudocompound falcigers and compound spinigers absent. Aciculae paired in most parapodia, yellow, tapering to blunt tips, distally bent; cross-sections round. Separation between core and sheath indistinct in both aciculae and subacicular hooks. Subacicular hooks yellow, bidentate. Hooks first present from setiger 51 in holotype and from setiger 55 in paratype, present in all setigers thereafter always single (except for replacements). Hooks tapering to small heads. Teeth similar in size and directed distally. UNKNOWN MORPHOLOGICAL FEATURES.—Features associated with posterior parapodia; pygidium and anal cirri. EXPECTED STATES OF UNKNOWN MORPHOLOGICAL FEA- TURES.—None. CHARACTERS USED IN PREPARATION OF KEY NOT SCORED.—Inappropriate Characters: 56, 58, 59. Unknown Characters: 1,2,4, 6,47, 50, 63, 65-68. ASSUMED STATES FOR PURPOSE OF PREPARING KEY.— None. REMARKS.—Eunice semisegregata was separated from type material of E. segregata on a series of distributional features detailed in part in Tables 19 and 21. Eunice semisegregata has branchiae extending farther back or with many more branchial filaments, or both, than other species in listed in Table 19, with the exception of E. megabranchia and E. validobranchiata. Subacicular hooks are first present from setiger 35 in E. megabranchia and from setigers 37-40 in E. validobranchiata.
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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
Page 31 and 32:
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
Page 43 and 44:
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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Page 101 and 102:
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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Page 109 and 110:
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
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NUMBER 523 123 a wide triangular ba
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Page 139 and 140:
NUMBER 523 127 55. Eunice edwardsi
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NUMBER 523 129 reduced, but still v
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NUMBER 523 131 1 2 .5 1 1 a h d h,
Page 145 and 146:
NUMBER 523 133 cirri did not reach
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Page 149 and 150:
NUMBER 523 137 J .02 .1 1 a c, e d
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NUMBER 523 139 .0 2 1 2 1 .1 .5 1 h
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NUMBER 523 141 peristomium. Prostom
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NUMBER 523 143 shorter than filamen
Page 157 and 158:
Page 159 and 160:
NUMBER 523 147 TABLE 5.—Variable
Page 161 and 162:
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
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NUMBER 523 165 24, present in all s
Page 179 and 180:
Page 181 and 182:
NUMBER 523 169 85. Eunice hawaiensi
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NUMBER 523 171 105 setigers; total
Page 185 and 186:
NUMBER 523 173 dorsally and especia
Page 187 and 188:
Page 189 and 190:
NUMBER 523 177 Filaments slender. N
Page 191 and 192:
NUMBER 523 179 tween Mx III and lef
Page 193 and 194:
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
Page 201 and 202:
NUMBER 523 189 02 FIGURE 62.—Euni
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NUMBER 523 191 .02 1 .1 e. t, q h.
Page 205 and 206:
Page 207 and 208:
NUMBER 523 195 FlOURE 65.—Eunice
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NUMBER 523 197 Peristomial cirri to
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Page 213 and 214:
NUMBER 523 201 near posterior end,
Page 215 and 216:
Page 217 and 218:
Page 219 and 220:
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:
Page 229 and 230:
NUMBER 523 217 EXPECTED STATES OF U
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Page 233 and 234:
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,
Page 239 and 240:
NUMBER 523 227 126. Eunice multicyl
Page 241 and 242:
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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Page 253 and 254:
NUMBER 523 241 proximally cylindric
Page 255 and 256:
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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Page 265 and 266: NUMBER 523 253 the type, there is l
Page 267 and 268: NUMBER 523 255 directed laterally,
Page 269 and 270: NUMBER 523 257 2 1 .1 b, c, », h d
Page 271 and 272: NUMBER 523 259 RGURE 86.—Eunice p
Page 273 and 274: NUMBER 523 261 colored, tridentate
Page 275 and 276: NUMBER 523 263 papeetensis has expa
Page 277 and 278: NUMBER 523 265 FIGURE 88.—Eunice
Page 279 and 280: NUMBER 523 267 These two species ar
Page 281 and 282: NUMBER 523 269 MATERIAL EXAMINED.
Page 283 and 284: NUMBER 523 271 evenly spaced, simil
Page 285 and 286: NUMBER 523 273 TABLE 13.—Variable
Page 289 and 290: NUMBER 523 277 Peristomial cirri to
Page 291 and 292: NUMBER 523 279 18+0, 12+12, and 1+1
Page 293 and 294: NUMBER 523 281 than peristomium, as
Page 297 and 298: NUMBER 523 285 167. Eunice reducta
Page 299 and 300: NUMBER 523 287 articulations. Grube
Page 303 and 304: NUMBER 523 291 antennae, without ar
Page 307 and 308: NUMBER 523 295 Jaws not examined. B
Page 309 and 310: NUMBER 523 297 posiscial lobes low,
Page 311 and 312: NUMBER 523 299 ASSUMED STATES FOR P
Page 315: NUMBER 523 303 smaller specimens. M
Page 319 and 320: NUMBER 523 307 The ceratostyles lac
Page 323 and 324: NUMBER 523 311 184. Eunice stigmatu
Page 325 and 326: NUMBER 523 313 Eunice stigmalura is
Page 327 and 328: NUMBER 523 31! .1 .5 a, b, c t n h
Page 329 and 330: NUMBER 523 317 Hartman (1956, as E.
Page 331 and 332: NUMBER 523 319 REMARKS.—Eunice th
Page 333 and 334: NUMBER 523 321 without articulation
Page 337 and 338: NUMBER 523 325 from setiger 5 throu
Page 339 and 340: NUMBER 523 327 appendages long, kni
Page 341 and 342: NUMBER 523 329 superior aciculae li
Page 343 and 344: NUMBER 523 331 b. c, e, f, g, h. i,
Page 345 and 346: NUMBER 523 333 paratype consisted o
Page 349 and 350: NUMBER 523 337 always single (excep
Page 353 and 354: NUMBER 523 341 1 .05 I 1 h a FIGURE
Page 355 and 356: NUMBER 523 343 3 A of total peristo
Page 357 and 358: NUMBER 523 345 Characters: 1, 2, 13
Page 359 and 360: NUMBER 523 347 TABLE 21.—Comparis
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NUMBER 523 355 TABLE 30.—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.
Page 415 and 416:
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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