LUMBRICLYMENE MINOR. 297 



Genus CXIV. — Lumbriclymene, Sars, 1872. 



Head-plate absent. The nuchal organ makes a wide curve. The anterior segments 

 more or less elongated ; posterior end of the body diminished with a sub-dorsal anus. 

 Nephridia in several segments. Glandular belts on the anterior segments, several of 

 which have spines. The hooks have gular bristles. Tube straight and free. 



1. Lumbriclymene minor, Arwidsson, 1906. Plate CVIII, fig. 1— hook. 



Specific Characters.— The anterior end of the body with yellowish rings at the feet 

 from the first to the eighth bristled segment, that of the fourth generally of a citron- 

 yellow hue. The feet of the three anterior long-bristled segments near the anterior 

 border, whilst those after the eighth are behind the middle of the segment. The fourth 

 and the seventh bristled segments have a long, smooth region behind the anterior border. 

 Eighteen (?) bristled segments. Segments five to eight with specially developed 

 glandular bands anteriorly. Small spines on first four anterior segments, one (or two) 

 in each. The fifth segment has hooks. Teeth of the hooks six to seven. The anterior 

 bristles with short wings, others with long, slender, tapering points with narrow wings. 



Synonyms. 

 1906. Lumbriclymene minor, Arwidsson. Skand. u. arktisch. Maldan., p. 46, Taf. i, fig. 26; Taf. vii, 



fig. 223—226. 

 1913. Praxillura A (fragment), Mcintosh. Ann. Nat. Hist., ser. 8, vol. xi, p. 116, pi. ii, fig. 1. 



Habitat. — Dredged in the ' Porcupine ' Expedition of 1870, at Station 8, viz. lat. 48° 

 13' N., long. 9° 11' "W., at a depth of 257 fathoms on the Channel slope and in the midst 

 of a northern fauna. 



Extends to Sweden (Arwidsson). 



The cephalic region of this small form is abruptly truncated, the frontal edge being 

 produced into a flattened, somewhat spatulate, snout, with a rounded anterior border. 

 A slight keel occurs on the truncated region. The anterior end is flexed in the prepara- 

 tion, and behind the mouth is a deep furrow. 



Following the head (combined cephalic and buccal region) is a short segment bearing 

 bristles succeeded by another of similar length, and then a slightly longer third. So far as 

 could be observed, these segments bear spines and bristles, the spines being remarkably 

 strong for a form so slender. The fourth and fifth segments are long, and so with those 

 which follow. 



The body is long, slender, and apparently brightly coloured in life. Posteriorly is a 

 somewhat tapered tail which ends in a blunt cone with the anus dorsal. About three or 

 four unarmed segments occur posteriorly. 



A minute account of the coloration is given by Arwidsson, showing that the first 

 bristled segment is citron-yellow, the dorsal surface of the head chrome-yellow. The 

 second segment and the feet are citron-yellow, with specks on both, and this and the 

 following segments are red with yellowish-brown. The third segment is deeper yellow 

 with specks especially posteriorly, and so with the fourth. The fifth is pale yellow with 

 specks. The sixth has very few specks, but these are deep red on the posterior part. 



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