Gatty Marine Laboratory, St. Andrews. 135 
blunt points of which pierce the tissues. A short flap also 
projects posteriorly. Superiorly is a group of long, trans- 
lucent, very slightly curved, finely tapered bristles with narrow 
wings, which are serrated at the edge (Pl. X. fig.6). The 
ventral bristles are equally translucent, have slightly curved 
shafts which are enlarged and bevelled at the ends for articu- 
lation with the long tapering terminal piece, which at the 
base is fully the breadth of the enlarged end of the shaft 
Gere XN fie. 9). 
At the 20th foot these jointed bristles have disappeared, 
and their places are taken by two powerful yellowish hooks 
with bifid winged tips (Pl. X. fig. 10), which in outline 
resemble miniature pliers. The dorsal bristles have shorter 
tips with a more distinct bend at the end of the shaft. The 
two brown spines have increased in strength. 
The 30th foot (Pl. X. fig. 7) presents little change on 
the foregoing, except in the branchie and the slightly 
increased slenderness of the dorsal bristles. The brush- 
shaped bristles (Pl. X. fig. 8) offer little peculiarity. 
From the posterior end of the fragment projected a series 
of fibres, apparently formed by the glands of the annelid, 
and enveloped in a translucent matrix. The secretion is 
probably allied to that of Panthalis. 
The example procured off Cape de Gatte had the same 
tough fibres projecting from its posterior (broken) end as 
in that form. Moreover, Loxosome occurred on many of 
the branchial processes. 
This species approaches the Diopatra brevibrachiata of 
Ehlers, though no spiral line appeared on the branchiz. 
Ehlers states that the first segment is broader than the 
succeeding, but in this form little difference between them 
was observed. The number of teeth on the dental plates is 
greater. It differs from Onuphis Panceri, Claparéde, in the 
form of the anterior feet and other particulars. 
A species apparently identical with Onuphis Grubei, 
Marenzeller, was dredged at Station 10 off Cape Finisterre 
in 81 fathoms during the ‘ Porcupine’ Expedition of 1870. 
The examples retained their madder-brown coloration in 
spirit. Thus the first five segments have each two bold 
touches of purplish brown on the dorsum, those on the first 
segment being double, viz., a large patch towards the anterior 
border of the segment with a smaller behind it. The spots 
in the others le on each side of the middle line of the 
dorsum and towards the posterior border of the segment. 
A considerable number of segments following these have 
