SCOLECOLEPIS VULGARIS. 157 



tentacle. Eyes absent as a rule in the preparations. The long palpi are pale, marked 

 externally by whitish bars and with the zig-zag blood-vessels. Body 3| to 4 inches 

 long, slightly narrowed in front and tapering posteriorly to the vent, which has eight 

 cirri. General colour yellowish brown, the ventral surface inclining to fawn. The 

 branchial vessels give a general ruddy hue to the dorsum— from the first foot backward. 

 The first foot carries a small branchia, a hatchet-shaped upper lamella, and a semicircular 

 ventral lamella. At the tenth foot the superior lamella is elongated vertically ; its upper 

 edge embracing the branchia and its lower edge forming a rounded lobe. The upper group 

 of bristles points dorsally, and the next forms a long row in front of the superior lamella. 

 All are curved backward and finely tapered, and have no trace of wings. The inferior 

 lamella is short and somewhat hatchet-shaped, with a row of rather short, strong, and 

 finely tapered bristles. Beneath is a small lamella homologous with that seen in Nerine. 

 The branchia has considerable dimensions. About the fiftieth foot the elongation of the 

 ventral lamella is marked, and a series of long, winged hooks, with a strong and sharp 

 main fang and two spikes on the crown, appear. Short bristles accompany the hooks, 

 which continue to the posterior end. 



Synonyms. 



1808. Lumbricus squamatus, J. Ratlike. 0. F. Midler's Zool. Danica, iv, p. 39, Tab. 155, fig. b 1 — 5. 



1815. ? Spio crenaticomis, Montagu. Trans. Linn. Soc, vol. xi, p. 199, Tab. xiv, fig. 6 (young?). 



1827-8. Spio vulgaris, Johnston. Zool. Journ., vol. iii, pp. 335 and 487. 



1828. Scolelepis squamatus, De Blainville. Diet. Sc. nat., Vers., t. lvii, p. 492. 



1838. Nerine vulgaris, Johnston. Mag. Zool. and Bot., vol. ii, p. 70, Tab. ii, fig. 1 — 8. 



1843. Malacoceros Girardi, De Quatrefages. Mag. de Zool., p. 10, pi. iii, fig. 1 — 4. 



„ „ vulgaris, idem. Ibid., p. 10. 



1847. Aonis wagneri, Frey and Leuckart. Beitrage Wirbellosen Th., p, 156, Tab. 2, fig. 4 — 6. 

 1851. Nerine vulgaris, Grrube. Fam. Annel., pp. 66 and 134. 

 1853. ? Nereis aries, Dalyell. Pow. Creat., vol. ii, p. 148, pi. xx, figs. 3 — 6. 

 1859-61. Colobranchus tetracerus, Schmarda. Neue Wirbellosen Th., i, ii, p. 66, Taf. xxvii, f. 210, 210a. 



1861. Nerine vulgaris, Sars. Forhandl. Vid. Selsk. Christ., p. 65. 



1862. Colobranchus ciliatus, Keferstein. Zeitschr. f. wiss. Zool., Bd. xii, p. 118, Taf. x, f. 12 — 18 



(young?). 

 1865. Nerine vulgaris, Johnston. Cat. Worms Brit. Mus., p. 200, pi. xvii, fig. 1 — 8. 

 „ Spio crenaticomis, Mecznikow. Zeitschr. f. wiss. Zool., Bd. xv, p. 337. 

 „ Malacoceros vulgaris, De Quatrefages. Annel., i, p. 445 (small example). 

 „ Nerine vulgaris, idem. Ibid., ii, p. 664. 

 „ Malacoceros Girardi, idem. Ibid., t. i, p. 442, Tab. x, fig. 12, Tab. xviii, figs. 4, 5, 8 (larger 



example). 

 „ Uncinia ciliata, idem. Ibid., p. 440. 

 1867. Scolecolepis vulgaris, Malmgren. Annul. Polych., p. 90. 



1874. „ „ Mcintosh. Ann. Nat. Hist., ser. 4, vol. xiv, p. 202. 



1875. „ „ idem. Invert, and Fishes St. Andrews, p. 126. 

 „ Nerine „ Panceri. Atti Soc. Ital., vol. xviii, p. 528. 



1879. Scolecolepis „ Tauber. Annul. Danica, p. 116. 



1883. Spio vulgaris, Livensen. Yid. Medd. Nat. Foren. Kjobenh., p. 99 (102). 



„ Nerine „ Wiren. Chcetop. f Vega' Exped., p. 408. 

 1885. „ „ Cams. Fauna Medit., p. 256. 



