250 



CIRRATULUS CIRRATUS 



1857. 

 1858. 

 1861. 

 1862. 

 1865. 



>) 

 1867. 

 1874 



1875. 

 1878. 

 1879. 



}) 

 1881. 

 1883. 



1886. 

 1888. 



1890. 

 1891. 

 1894. 

 1897. 

 1898. 

 1904. 

 1907. 

 1909. 

 1910. 

 1911. 

 1914. 



Cirratulus cirratus, Koren. Nyfc Mag. f. Naturvid., Bd. xi, p. 94. 



„ borealis, Grrube. Mem. Sav. etrang. St. Petersb., t. viii, p. 15 (sep. abdr.). 



„ „ Danielssen. Reise 1857, Nyt Mag. f. Naturvid., xi, p. 52. 



„ „ Keferstein. Zeitschr. f. wiss. Zool., Bd. xii, p. 120, Tab. x, figs. 19 — 22. 



„ „ Johnston. Cat. Worms Brit. Mus., pp. 210 and 343, text-fig. xxxvii. 



„ Medusae, De Quatrefages. Annel., i, p. 455. 



„ cirratus, Malmgren. Annul. Polychaet., p. 95. 



„ „ Mcintosh. Ann. Nat. Hist., ser. 4, vol. xiv, p. 203. 



„ „ idem. Invert, and Fishes St. Andrews, p. 127. 



„ „ idem. Trans. Linn. Soc, ser. 2, Zool., vol. i, p. 507. 



„ „ Tanber. Annul. Danica, p. 119. 



„ „ Theel. Kongl. svenska Yet. Akad. Handl., Bd. xvi, p. 54. 



„ „ Langerhans. Canarisch. Annel., p. 115. 



„ „ Levinsen. Vidensk. Meddel. Nat. Foren., p. 111. 



„ „ Wiren. Chaetop. 'Vega' Exped., p. 410. 



„ ,, and borealis, Harvey Gibson. First Rep. Fauna, Liverp. Bay, p. 156. 



„ „ Cunningham. Quart. Jouro. Micr. Sc, vol. xxviii, N.s., p. 224, pi. xviii, 



fig. 6. 

 „ „ idem and Ramage. Trans. Roy. Soc. Edinb., vol. xxxiii, p. 643, pi. xxxix, fig. 9. 



„ borealis, Malaquin. Annel. Boulonn., p. 46. 

 „ cirratus, Hornell. Trans. Biol. Soc. Liverp., vol. v, p. 253. 



Bidenkap. Christ. Yid.-Selsk. Forhandl., p. 98. 



Michaelsen. Polych. deutsch. Meere, p. 144. 



idem. Gronland. Annel., p. 128. 



Mcintosh. Mar. Invert. S. Africa, vol. iii, p. 67. 



Fauvel. Bull. Inst. Ocean., No. 107, p. 18. 



Percy Moore. Proc. U. S. Nat. Mus., vol. xxxvii, p. 139. 



Southern. Proc. Roy. Irish Acad., vol. xxviii, p. 236, 



Mcintosh. Ann. Nat. Hist., ser. 8, vol. vii, p. 154. 



Southern. Proc. Roy. Irish Acad., vol. xxxi, no. 47, p. 110. 



Habitat. — Generally distributed around the shores of Britain, between tide-marks in 

 muddy cracks and fissures of rocks and in mud under stones. It is also procured by 

 the dredge in deeper water. At Lochmaddy it seems to be less plentiful toward low-water 

 mark than amongst muddy sand at half-tide mark. Dublin Bay, and W. coast of 

 Ireland (Southern) ; Salthill (R. I. A.) ; Plymouth (Spence Bate and Brooking Rowe). 



Elsewhere it extends to Greenland (CErsted), Scandinavia, Finmark, Spitzbergen 

 (Malmgren, Theel and Fauvel); Atlantic Coast, U.S.A. (Verrill) ; Siberian and Behring 

 Seas (Grube, Wiren). 



Head (prostomium, Plate XOI, fig. 2) broader than that of G. tentaculatus, hoof- 

 shaped, but with a slight notch in the centre, and with two well-marked bands of eyes 

 sloping obliquely outward and backward, as also do those of Archidice glandularis of 

 Langerhans, 1 from Madeira. The peristomium has inferiorly the puckered opening of the 

 mouth. 



Body three to six inches in length, narrow, elongated, with more distinct segments 

 (which are 106 or more) than in G. tentaculatus, for their antero-posterior diameter is 

 1 ' Zeitschr. f. wiss. Zool./ Bd. xl } p. 259, Taf. xv, fig. 18, 1884. 



