CIRRATULUS CIRRATUS. 



249 



3. Cirratulus ciRRATUs, 0. F. Miiller, 1776. Plate XCI, fig. 2 ; Plate CVII, figs. 2-2 c— 



bristles and hooks. 



Specific Characters. — Head broader than in G. tentaculatus, hoof-shaped, but with a 

 slight central notch, and two well-marked bands of eyes sloping obliquely outward and 

 backward. It and the succeeding segment are devoid of appendages and double the 

 breadth of those which follow. Body 3 to 6 inches in length, and having 106 to 130 

 segments, which are more distinct than in G. tentaculatus. It is generally smaller than 

 the latter, rounded dorsally, and flattened ventrally, where a deep median groove occurs. 

 Vent terminal with a crenate border. Colour yellowish-orange to deep madder brown. 

 Cirri yellow and red throughout. Branchiae commence on the first bristled segment 

 (fourth) in the form of two lateral dorsal tufts with seven or eight in each. Feet more 

 prominent than in G. tentaculatus, and the divisions are closer. The first twelve bear 

 capillary bristles only, the ventral shorter than the dorsal. A crotchet appears in the 

 ventral of the thirteenth foot, and in the dorsal at the thirtieth foot. The shaft of the 

 crotchet dilates a little from the base upward above the middle, where there is a slight 

 forward curve, then a slight bend backward takes place, and again a forward curve to 

 form the terminal hook. 



Synonyms. 



1762. Lumbricus marinus cirris longissimis, s. cirrosus. H. Strom. Physik. cecon. Beskriv. over 



Fogder. i Bergens, Stift. 1 Sorve., p. 188. 

 1768. „ „ Parelius. Norske Bid. Selsk. Skrift., iv, p. 428, Tab. xiv, fig. 7. 



1770. „ marinus cirris longissimis, Strom. Skrift. Kjobenh. Selskab., x Deel, p. 26, Tab. viii. 



1774-93. „ „ „ „ Martini. Naturlex, ii, p. 482, taf. E, %. 6. 



1776. „ cirratus, 0. F. Miiller. Zool. Dan. Prodr., n. 2608, p. 214. 



1780. „ „ Fabricius. Fauna Gronl., p. 281, no. 226, fig. 5. 



1791. „ „ G-melin. Linn. Syst. Nat., ed. 13, i, p. 3086. 



1800. ,, marinus cirris longissimus, O. F. Miiller. Wurm-Arten, p. 193. 



1825. Cirratulus fuscescens and C. flavescens, Johnston. Edinb. Philos. Journ., vol. xiii, p. 219. 

 1828. Cirrhatnlus borealis, De Blainville. Diet. Sc. nat., t. lvii, p. 490. 

 „ Cirratulus „ Stark. Elements, ii, p. 141 . 



medusse, Johnston. Mag. Nat. Hist., vol. vi, p. 124, fig. 13. 



„ idem. Mag. Zool. and Bot., vol. ii, p. 71, pi. iii, figs. 7 — 12. 



1833 

 1838 

 1840 

 1842 

 1843 



1844. 



1849. 

 1851. 



1853. 



borealis, Lamarck. Anim. s. Vert., t. v, p. 802 ; 2nd edit., t. v, p. 536. 

 CErsted. Kroyer's Naturli. Tidsskr,, Bd. iv, p. 126. 



Kathke. Nova Acta Acad. Leop.-Car., xx, p. 180, Tab. 8, figs. 16 and 17. 

 CErsted. Annul. Danic. Consp., p. 43. 

 idem. Gronl. Annul. Dorsib., p. 206, figs. 98 and 102. 

 idem. Eeg. Mar., p. 78. 

 idem. Arch. f. Naturges., Bd. x, p. 109. 

 Medusa, W. Thompson. Ann. Nat. Hist., vol. xiii, p. 437. 

 borealis, Leuckart. Arch. f. Naturges., Bd. xv, p. 196, pi. iii, fig. 10. 

 Sars. Nyt Mag. f. Naturvid., Bd. vi, p. 207. 

 „ Grrube. Fam. Aimel., pp. 67 and 134. 

 Lumbricus cirratus, Dalyell. Pow. Creat., vol. ii, p. 133, pi. xviii, figs. 1 — 4. 



155 



