EUNICE FASCIATA. 429 



It bears dorsally a small tuft of tapering, simple bristles, and below the spines a series 

 of jointed bristles, the shafts of which are curved and dilated toward the tip, which is 

 bevelled and marked by oblique strise. The terminal piece is bifid, with guards at each 

 side, as in the succeeding feet. 



At the tenth foot (Plate LXXIV, fig. 7) the divisions of the branchios are ten in 

 number, the dorsal cirrus extends beyond the bristles, and there are three spines. The 

 superior bristles have the same type as in front (Plate LXXXIII, fig. 4). The brush- 

 shaped bristles at the base of these show no peculiarity. The inferior bristles agree with 

 those in front (Plate LXXXIII, fig. 4 a), though the terminal piece is less elongated. They 

 form a dense group. 



The thirtieth foot has three spines, the tips of w4iich project beyond the setigerous 

 region. The bristles are as in front. The ventral cirrus is a short process, which 

 projects beyond the great ventral pad. The fortieth foot has also three spines, besides 

 a powerful ventral hook (with wings) issuing just above the ventral cirrus, which now 

 is elongated. The fiftieth is similar. At the seventieth foot the setigerous region has 

 diminished in size, and has two spines. The great inferior hook is well marked, and the 

 ventral cirrus (lobe) is longer. 



The ninetieth foot (Plate LXXIV, fig. 7 a) has three spines, the middle one being the 

 longest, and the tips of all being distinctly curved. The great hook with its crest projects 

 below the ventral cirrus. Near the tip of the tail (Plate LXXIII, fig. 7 b) two sharp 

 spines occur in the somewhat deep setigerous region. The jointed ventral bristles are 

 comparatively large, and the great hook projects inferiorly. The. ventral cirrus is bent 

 upward and is comparatively long. 



So far as can be made out the Leodice fasciata and L. punctata of Eisso l refer to this 

 form ; indeed, his description is fairly good. 



Grrube (1838) in one of his early papers gave a careful account of the external and 

 internal structure of this species, with accompanying figures. 



The head of a gorgeously coloured Eunice on Plate 142 of Delle Chiaje's ' Descri- 

 zione ' (fig. 7) may be that of this species, though the gill represented in fig. 9 resembles 

 that of E. aphroditois. 



Claparede (1864) describes a well-marked variety of a vinous red colour with a white 

 band on the head, as well as on the first and fourth segments bearing feet, and with the 

 tentacles, and the tentacular and dorsal cirri, variegated with white and red. 



It is doubtful if the Eunice Glapareclii of De Quatrefages 2 is other than a variety of 

 E. fasciata. 



An elaborate structural account of the species is given by Ehlers (1868), and also a 

 description of the reproduction of the tail. 



Pruvot (1885) examined the nervous system of Eunice torquata, a form which 

 approaches very closely to this species. It agrees generally with the arrangement in 

 Hi/alincecia tubicola, but the origin of the oesophageal connectives is double, and the large 

 neural canal is nearer the ventral border. 



1 ' Hist. Nat. de TEurope/ t. iv, p. 421, 1826. 



2 ' Annel./ ii, p. 652, 1865. 



