Gaity Marine Laboratory, St. Andrews. 91 



The body is rounded dorsally, slightly flattened ventrally, 

 and marked by a ventral streak. Arwidsson gives 165 mm. 

 as ins longest example. The largest British form is impert'eet, 

 consisting of eleven anterior bristled segments, and it 

 measures 70 mm., so that it would not be much shorter than 

 Arwidsson's. The eharaeteristic funnel svas dredged by 

 Dr. Gwyn Jett'reys 10 miles off Balta in 60 fathoms, having 

 been severed close to the base, no trace of the adjoining 

 segments remaining. Twenty-eight of the shorter, conical, 

 flattened cirri, -svliieh are flexible and comparatively large, 

 occur on the margin, a slightly convex portion occupying 

 the rim between the two longer on each side of the mid- 

 ventral line. Each of these longer forms has a larger 

 flattened base than the ordinary cirrus, and the tip is filiform, 

 with a probe-point. Fine lines radiate from the central anal 

 opening, but they are much more numerous than the notches 

 between the cirri. A slight ridge passes from the low anal 

 cone to the mid-ventral line, and outside, in front of the 

 anal cone, is another ring. As regards colour, Arwidsson 

 mentions that the fourth and fifth bristled segments are 

 dotted with yellowish-red points, and, the sixth with more 

 distinct touches. 



The first bristled segment is narrow and carries laterally a 

 strong spine or two and a tuft of short bristles near its 

 anterior border. The space has a striated central region, 

 increases in diameter from the base to the shoulder, and then 

 diminishes to the hard golden point. The second bristled 

 segment is longer, has a fold toward its anterior border, 

 behind which (fold) the spine or spines and bristles are 

 placed. The third segment is slightly shorter, has its fold 

 somewhat nearer the segment-junction, and also bears a spine 

 or two and bristles on each side immediately behind the 

 fold. The fourth segment is similar in regard to the bristles 

 and spines, and they are placed near the anterior third. A 

 change occurs in the fifth bristled segment, in which a short 

 row of hooks is found in a pit on the ventral surface on each 

 side close behind the segment-junction, and the same occurs 

 in the sixth and seventh bristled segments. The eighth 

 presents elevated glandular ridges at the anterior border for 

 the hooks, the bristle-tuft being at the dorsal end, and so 

 with the ninth segment. The tenth foot is somewhat peculiar 

 in position, appearing at what seems to be the segment- 

 junction. The eleventh, however, is clearly at the posterior 

 end of the segment, which in this case was the end of the 

 fragment. 



The setigerous process bears a group of powerful golden 



