A Review of the Genus Eunice - Smithsonian Institution Libraries

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330 SMITHSONIAN CONTRIBUTIONS TO ZOOLOGY REMARKS.—Eunice unidentata was collected near Acapulco, Mexico. It is first and foremost characterized by the structure of the subacicular hooks and the very characteristic bases of the antennae. The basal articulations appear to be unique to the whole genus. The species is here considered valid and is listed with similar species in Tables 27 and 28. It is listed with other species with simple, spine-like subacicular hooks in Table 50. 197. Eunice unifrons (Verrill, 1900) FIGURE 113a-j; TABLES 41,42 Uodice unifrons Verrill, 1900:644.—Tread well, 1921:17-20, figs. 21-30, pi. 1: figs. 5-9. Eunice vittata.—Hartman, 1942:9 [in part, not Nereis vittata Chiaje, 1929]. MATERIAL EXAMINED.—Holotype, YPM 1241, Bermuda, 1898, A.E. Verrill and company coll.; YPM 1321, Platts Village, Bermuda, beach to 10 feet, A.E. Verrill and company, 1898,4 specimens. COMMENTS ON MATERIAL EXAMINED.—The holotype material now consists of an anterior fragment of 31 anterior setigers and a median fragment of about 60 setigers; the specimen has been completely dried out at one time (Treadwell, 1921:20 reported the type dry); the only information gained from the specimen concerns the structure of the subacicular hooks and other setae and some details of branchial distribution. The four specimens from YPM 1321 were part of the original material, but were not designated as types; they are in better shape than the holotype even if they are rather soft and have lost most of the antennae. DESCRIPTION.—All specimens from YPM 1321 incomplete with up to 90 setigers; specimen described and illustrated with 75 setigers; length 28 mm; maximal width 1 mm at setiger 10; length through setiger 10, 5 mm. Prostomium (Figure 113a) distinctly shorter and narrower than peristomium, as deep as x li of the peristomium. Prostomial lobes frontally rounded, dorsally inflated; median sulcus distinct ventrally and at frontal edge, but not dorsally. Eyes not seen. Antennae in a horseshoe, with A-I isolated by a gap, similar in thickness. Ceratophores ring-shaped in all antennae, without articulations. Ceratostyles digitiform, with cylindrical articulations; innermost articulation (other than ceratophoral ring) - V2 of total antennal length; maximum 4 articulations in A-I I and A-I 11. A-I to posterior peristomial ring; A-I I and A-I 11 to setiger 2. Peristomium cylindrical. Separation between rings distinct on all sides; anterior ring less than 2 /3 of total peristomial length. Peristomial fold covering base of prostomium is unfolded on all 4 specimens. Peristomial cirri to middle of anterior peristomial ring, slender, digitiform, with 5 articulations. Maxillary formula of 1 specimen 1+1, 8+8, 5+0, 8+10, and 1+1. Mx VI missing. Mx III behind left Mx II, but relatively short. Branchiae (Figure 113d) present, pectinate, distinctly longer than notopodial cirri, not reduced in mid-body region, erect. Branchiae from setiger 3 through setigers 45-54 (of more than 70 setigers, no specimens complete). First 4 and last 10 pairs single filaments; maximum 5 filaments at about setiger 15-30. Branchial stems slender. Filaments slender. Anterior neuropodial acicular lobes rounded with a distinct, short nipple-like projection near middle of lobe and posterior to emergence of aciculae. Median and posterior neuropodial acicular lobes conical; aciculae emerging at midline. Pre- and postsetal lobes low, transverse folds. First 5 ventral cirri conical. Ventral cirri basally distinctly inflated from about setiger 6. Inflated bases ovate; narrow tips digitiform. Posterior ventral cirri increasingly tapering with inflated portion less noticeable. Anterior notopodial cirri basally inflated, becoming slender and digitiform in branchial region. All notopodial cirri with 2 or 3 cylindrical articulations. Limbate setae slender, finely serrated. Pectinate setae (Figure 113c,f,i) tapering, flat. One marginal tooth very much longer and heavier than all other teeth; 7-10 teeth present. Shafts of compound falcigers (Figure 113b,g) slightly inflated and marginally serrated. Anterior and median appendages long and narrow with nearly parallel sides, bidentatc. Teeth very similar in size, both sharply pointed. Proximal teeth directed laterally. Distal teeth distinctly bent Posterior appendages (Figure 113j) very much shorter with slender teeth; proximal teeth shorter than distal teeth. Guards distally asymmetrically bluntly pointed and marginally serrated; mucros absent Pseudocompound falcigers and compound spinigers absent Aciculae single; clear yellow, distally tapering, straight; cross-sections round. Separation between cores and sheaths indistinct in both aciculae and subacicular hooks. Subacicular hooks (Figure 113e,h) yellow, tridentate in a crest. Hooks first present from setiger 25 in holotype and from setigers 26-31 in other specimens, present in all setigers thereafter, always single (except for replacements). Hooks with large curved main fangs and very small tertiary fangs; 2 distal fangs forming group separated from main fang. 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, 2,13, 14, 38, 63. ASSUMED STATES FOR PURPOSE OF PREPARING KEY.—38,2. REMARKS.—Eunice unifrons is listed with similar species in Tables 41 and 42. It is one of five species in Table 42 with blunt guards on the compound falcigers. The other species include E. aucklandica, E. multicylindri, E. tentaculata, and E. vittata. Of these species, only E. multicylindri and E. unifrons have single subacicular hooks throughout. The other species listed have at least paired subacicular hooks in most setigers. The peristomial cirri are articulated in E. multicylindri and lack articulations in E. unifrons.
NUMBER 523 331 b. c, e, f, g, h. i, j. n, o FIGURE 113.—Eunice unifrons (a-g of nontype, original material, YPM 1321; h-j of holotype, YPM 1241): a, anterior end, lateral view; b, compound falciger, parapodium 23; c, pectinate seta, parapodium 23; d, parapodium 23, anterior view; e, subacicular hook, parapodium 37; f, pectinate seu, parapodium 37; g, compound falciger, parapodium 37; h, subacicularhook, parapodium SO; i pectinate seu, parapodium SO; j, appendage of compound falciger, parapodium SO. Eunice valens (holotype, MCZ 120): k, anterior end, lateral view; 1, parapodium 17, anterior view; m, compound falciger, parapodium 17; n, pectinate seu, parapodium 17; o, appendage of compound falciger, posterior parapodium; p, subacicular hook, posterior parapodium; q, aciculae, posterior parapodium. (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
Page 7 and 8:
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
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NUMBER 523 123 a wide triangular ba
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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,
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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
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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
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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
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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
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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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Page 195 and 196:
NUMBER 523 183 transverse folds. Al
Page 197 and 198:
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.
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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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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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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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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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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 295 and 296: NUMBER 523 283 TABLE 14.—Variable
Page 297 and 298: NUMBER 523 285 167. Eunice reducta
Page 299 and 300: NUMBER 523 287 articulations. Grube
Page 301 and 302: NUMBER 523 289 FIGURE 97.—Eunice
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 and 316: NUMBER 523 303 smaller specimens. M
Page 317 and 318: NUMBER 523 305 thereafter, always s
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: NUMBER 523 329 superior aciculae li
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
Page 387 and 388: Appendix A Character List for Eunic
Page 389 and 390: NUMBER 523 377 4. digitiform 5. cla
Page 391 and 392: 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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