LAGISCA FLOCCOSA. 299 



covered with minute spines (visible under the microscope), and having posteriorly a series 

 of soft globular papillse arranged at intervals just within the margin. Cilia on the outer 

 border — very few and short. Dorsal bristles with acute tips and finely serrated ; ventral 

 bristles with the tips simple superiorly and inferiorly, rest bidentate. Alternate spinous 

 rows long, though the bristle-tip is proportionally short. Dorsal cirri with numerous 

 and rather short cilia. Ventral cirrus smooth. 



Synonyms. 



1820. Polynoe floccosa, Savigny. Syst. Annel., pp. 22, 23, and 27. 



1828. Eumolpe floccosa, Blainville. Diet, de Sc. Nat., vers., 459. 



1834. Polynoe floccosa, Aud. and M. Edw. Ann., 88. 

 1851. „ „ Grube. Fam. d. Ann., 37 and 120. 



1865. ,, „ De Quatrefages. Ann., 236. 



„ „ semisculptus, Johnst. Cat. Brit. Mus., p. 116, pi. v, f. 1 — 11, and pi. vi, f. 4 — 6. 



1867. Lagisca propinqua, Malmgren. Ann. Polych., p. 9, Tab. i, fig. 3. 



1870. Polynoe floccosa, Grube. Archivf. Naturges., 287. 



1873. Lagisca propinqua, Sars. Bid. Christ. Fauna, p. 3. 



1875. Polynoe floccosa, Mcintosh. Invert, and Fish., St. A., p. 116. 



„ Mcintosh. Trans. Z. S., ix, 380, pi. 68, f. 6, 8, 10. 



1876. Lagisca propinqua, Mcintosh. Trans. Z. S., 375, pi. 67, f. 12 — 14. 



1879. „ „ Tauber. Ann. Danic, 81. 



1880. „ „ Langerhans. Die Wurmfauna Madeiras, Zeit. f. w. Zool., xxxiii, p. 274, 



Taf. xiv, fig. 3c. 



1882. Polynoe semdsculpta, Hansen. Norweg. N. Atl. Exped., 26, pi. iii, f. 16 — 20. 



1883. Harmothoe propinqua, Levinsen. Nord. Annul., 192. 

 „ „ semisculptus, Ibid. 



1886. Lagisca propinqua, Harvey-Gibson. Verm. Liverpool, 148. 



„ „ „ Langerhans. Zeit. f. w. Zool., xl, 251, Taf. 15, f. 6. 



„ Polynoe floccosa, Harvey-Gibson. Yerm. Liverp., 150. 

 1891. ,, (Lagisca) propinqua, Hornell. Op. cit., p. 234, pi. 13, f. 1, 7, 9. 

 1896. Lagisca propinqua, var. abyssorum, Roule. Camp. d. ' Caudan/ 444. 

 1898. Harmothoe semisculptus, Michaelsen. Gronland. Annel., Bib. Zool., Heft 20, Lfg. 4, p. 121. 



Habitat. — Everywhere on the British shores from Shetland to the Channel Islands, 

 where it is the chief form between tide-marks. It also ranges from 600 fathoms to low- 

 water mark. It extends to the Gulf of St. Lawrence in Canada, as well as to Norway 

 and Sweden. It was procured likewise during the ' Vega ' Expedition, and apparently 

 also is found in Greenland. 



Length 1-J inches, breadth about \ inch. 



Head (Plate XXVII, fig. 14) with a median furrow anteriorly, which passes on 

 each side of the base of the tentacle to the peaks. The black eyes are comparatively 

 large, the posterior pair being dorsal in position and somewhat nearer each other than the 

 anterior pair. The latter are more or less lateral in position just in front of the prominent 

 median region. They are slightly larger than the posterior pair. Both pairs show in 

 some specimens a cuticular lens, like a central speck. The median tentacle is rather short, 

 with a long filiform tip and a slight swelling below the latter. It has short clavate cilia. 

 The lateral tentacles are also short with similar cilia, and a long filiform tip. They have 



