420 HYALINCECIA TUBICOLA. 



At the tenth foot is a proportionally longer fusiform dorsal cirrus. The setigerous 

 region has dorsally one or two long and rather stout bristles with winged and tapering 

 tips, besides a group of brush-shaped forms. Below is a series of similar winged bristles 

 with broader wings and shorter tips. The branchiae commence about the twenty-third 

 or twenty-sixth foot as simple filaments, and continue almost to the posterior end (absent 

 in the last seven, Langerhans). 



At the thirtieth foot the dorsal cirrus has diminished to a slender subulate organ, the 

 branchia being very much larger and longer. The short blunt setigerous region has dorsally 

 a group of three longer winged bristles with rather short tips. Brush-like bristles occur 

 amongst them. Below are two strong bifid hooks. Then follow a few bristles with shorter 

 tips and broader wings. A ventral pad represents the cirrus. Posteriorly the body 

 diminishes to a somewhat flattened tail, with the anus on the dorsum and two long finely 

 tapered caudal cirri. The tube is firm, horny, and quill-like, devoid of extraneous 

 structures. It tapers towards one end, and has apertures at both. 



Synonyms. 



1766. Nereis tubicola, 0. F. Miiller. Zool. Danic. Prod., p. 217, No. 2625. 

 1788. „ „ idem. Zool. Danica, i, p. 18, Tab. xviii, f. 1 — 6. 



1806. „ „ Turton's Linnaeus, iv, p. 87. 



1820. Leodice „ Savigny. Syst. ArmeL, p. 52. 



1827. 'Nereis „ Bruguiere. Encycl. Meth., Vers, i, p. 134, Tab. Iv, f. 7—12. 



1828. Nereidonta tubicola (Nereitube), De Blainville. Art. Vers in Diet. Sc Nat., t. lvii, p. 447. 

 „ Spio filicornis, Delle Chiaje. Mem., vol. iii, pp. 173, 176, Tav. xlv, f. 6, 7. 



1833. Nereis tubicola, Aud. & Edw. Ann. Sc. nat., t. xxvii, p. 228. 



1834. Onuphis „ idem. Ann el., p. 154. 



„ Eunice „ Fleming. Encycl. Brit., 7th ed., vii, p. 219. 



1835. Onuphis „ Sars. Beskr. og Iaktt., p. 48. 



1838. „ „ G-rube. Zur Anat. Kiemenw., p. 45, Tab. ii, f. 10. 



1840. Nereis „ idem. Actin. Echin., etc., p. 82. 



1844. „ „ W. Thompson. Rep. Brit. Assoc, 1843, pt. 2, p. 76. 

 1844-5. Onuphis tubicola, (Ersted. Kroyer's Nat. Tids. (Drobak), p. 405. 



1845. Nereis tubicola, Johnston. Ann. Nat. Hist., xvi, p. 6, with figs. 

 ,, „ „ Peach. Rep. Brit. Assoc, 1844, pt. 2, p. 64. 



1847. „ „ idem. Ray. Soc Rep. Zool., 1843-4, p. 508. 



1851. Onuphis „ Grrube. Fam. Annel., pp. 44 and 123. 



1852. Eunice „ Landsborongh. Excurs. Arran, p. 49. 



1853. Onuphis „ Sars. Nyt Mag. f. Naturvid., vii, pp. 386 and 391. 

 1859. „ „ idem. Reise, p. 14 (sep.). 



„ „ „ Danielssen. Ibid., 1858, p. 115. 



1864. „ „ Grrube. Insel Lussin, p. 79. 



1865. Northia „ Johnston. Cat. Worms Brit. Mus., pp. 136 and 341. 

 ,, Onuphis tubicola, De Quatrefages. Annel., i, p. 351. 



1867. Hyalinoecia tubicola, Malmgren. Annul. Polych., p. 67. 



„ Northia tubicola, Parfitt. Trans. Devon Assoc, ii, p. 20 (sep. copy). 



1868. Onuphis „ Ehlers. Borstenw., ii, p. 297, Taf. xiii, f. 1—14. 



1869. Hyalinoecia tubicola, Baird. Journ. Linn. Soc, x, p. 357. 



1873. „ „ K. Kupffer. Jahresb. Comm. deutsch. Meere, 1871, p. 150. 



