REPORT ON THE AiSNELIDA. 
267 
slight wing, and a number of brush-shaped forms (PI. XIXa. fig. 7), one lateral filament 
being generally longer than the others. Beneath the spines are the compound bristles, 
each having a stout slightly curved shaft, with a dilatation and an obliquity at the free 
end (PI. XIXa. fig. 8), the convex edge, moreover, being minutely serrated, and furnished 
with a terminal bifid portion protected by a guard. 
About the thirtieth foot another black spine is introduced interiorly, and continues to 
the posterior end of the body. It has a bifid tip, a small process occurring on the 
crown, and a much larger one forming a hook beneath (PI. XIXa. fig. 9). The bifid 
tip, which on the whole is slightly developed, is guarded by a pair of short wings. 
The tail is terminated by two tapering styles of considerable length, and articulated 
as in the frontal processes. 
The specimens are somewhat numerous, and are accompanied by tough parchment- 
like cases,^ which seem to have been formed amongst zoophytes, after the manner of 
those of Thelepus on our own shores. The tubes, moreover, are slightly branched. 
This branching is more distinctly seen in what appears to be a 
similar tube (Fig. 28) kindly forwarded by Mr. H. J. Carter from the 
Gulf of Manaar. In this case the tube grows amongst the branches of 
a horny sponge {Hircinia clathrata), resembling a coarse officinal one. 
The intestine is filled posteriorly with pellets of a dull greenish 
substance, amongst which are many sponge-spicules, fragments of 
perforated calcareous plates, pieces of a minute calcareous tube, and 
other debris. 
In transverse section the body-wall in the main agrees with 
Eunice torquata, De Quatrefages. The longitudinal ventral muscles, 
however, are less bulky internally. The strong oblique muscles pass 
to the ventral border of the nerve-area and curve outward within 
the circular muscular coat, which as usual extends continuously 
across the region. The nerve-area appears like an investment of 
thn large neural canal ; while superiorly an opaque brownish granular 
mass occurs above the nerve-cords. The longitudinal dorsal muscles 
(which are about the same size as the ventral) are massive interiorly, but diminish 
towards the median dorsal line. 
Fig. 28. — Tube, probably 
of an Eunice, attached 
to a sponge (Hircinia 
clathrata, H. J. Carter), 
Gulf of Manaar. 
Eunice magellanica, n. sp. (young ?). 
Habitat . — Dredged at Station 149 (Accessible Bay, Kerguelen) ; lat. 49° 8' S , long. 
70° 12' E.; depth, 20 fathoms; sea-bottom, volcanic mud. 
^ Like those of Eunice floridana of Ehlers, Bull. Mus. Comp. Zool, vol. v., No. 12, p. 273. 
