67 



Fam. CIRRATULIDJE. 



CiRRATULUS CIRRATUS, O. F. Mitller, 1776, 

 ( = capensis, Schmarda). 



1776. Lunibyicus ciyratiis, O. ¥. Miiller, Zool. Dan. Prodr., p. 



214. 

 1843. Cirratnliis horcahs, CErsted, Ann. Dan. Consp., p. 67. 

 1843. „ „ Id. Groenl. An. Dors., p. 54. 



1856. ,, aitstralis, Stimpson, Proc. Acad. Nat. Sc, 



Philad., p. 392. 

 1861. Chraiulns capensis, Schmarda, Neue wirb. Th. I. ij., p. 



56, Taf. xxvii., fig. 213. 

 1865. Cirmtiiliis aiisfmlis, Johnston, Cat. B. M. 210. 

 1867. ,, ,, Malmgren, Ann. Polych., p. 205. 



1885. Cirratnliis capensis, Mcintosh, Ann. " Challenger," p. 



383, PI. xxivA., figs. 9 and 10. 



The two Cape species form a parallel to the two common 

 British forms, viz., C. tcnfacnlatns and C. cirrafns. 



This form takes the place of the Cirratnliis cirratits of the 

 British area, and it is very closely allied to it, so closely that 

 it has now been thought unnecessary to separate them. 



The head is less horse-shoe shaped and more pointed, and it 

 is devoid of eves — so conspicuous in the British form. The 

 buccal segment is of considerable breadth, and is followed by 

 another segment free from bristles. The third segment bears 

 hooks and bristles, as well as a branchiae dorsally, close to the 

 bristle tuft. The fourth has a similar arrangement. At the 

 fifth is the dense group of branchiae on each side, but the fila- 

 ments spring from one or two of the succeeding segments. 

 For forty of the following seganents, the branchiae arise close 

 above the dorsal bristles, but they afterwards, and to the tip of 

 the tail, have a considerable interval between them an.d the 

 dorsal bristles, in this respect agreeing with the British examples. 

 As in the British form, the size of these branchiae is in contrast 

 with that of the other species from the Cape. 



The first ventral tufts are slender and bristle-like, but soon 

 two or three dark brown hooks are found in each segment 

 (Plate vi., fig. 30), the shape being f-like, with a forward bend 

 at the point, and considerablv stouter than in the next form. 

 As a rule, only two are found in the posterior region of the 

 body. Dorsally is a tuft composed of three long and finely 

 tapered simple bristles — alternating with three slightly curved 

 and somewhat longer spines than in the ventral series. 



