POLYNOIDAE 63 



cristata. The ventral chaetae are prolonged into very fine delicate flagelliform tips which 

 curl over in the shape of a hook. The extent to which the tips are bent over varies 

 widely and a few bristles are without the curving of the tip. The ventral cirri are very 

 small : they are attached to stout bulbous cirrophores. 



Remarks; I have attributed these fragments to the sub-genus Borrukia on the ground 

 of the presence of dorsal "setae penicillatae." There are other characters, however, in 

 which they resemble the genotype, the presence of the median dorsal tubercles, the 

 shape of the dorsal cirrophores and of the feet. They differ from Barrukia cristata in 

 the number of median dorsal tubercles, in the presence of long curved flagelliform tips 

 to the ventral chaetae, and in the sculpturing of the elytra. 



Genus Antinoe, Kinberg 

 Antinoe pelagica, n.sp. 



St. 45. 6. iv. 26. 27 miles S 85° E of Jason Light, South Georgia. Bottom. 238-270 m. Gear 

 NCS-T. One specimen. 



St. SS 18. 15. xii. 27. 54° 58' S, 27° 32' W. 50-0 m. Gear N70 V. One specimen. 



Description. The body is slender and delicate. The complete specimen measures 

 II mm. by 1-5 mm. without the feet: the measurement from tip to tip of the bristles 

 is 6 mm. There are about 35 chaetigers and 15 pairs of elytra, which completely cover 

 the body up to the pygidium. The elytra are faintly touched with brown on their edges ; 

 otherwise there is no colour. 



The head (Fig. 16, a) is broader than long and deeply incised in front. The lateral 

 tentacles are inserted ventrally. There are two pairs of eyes, of which the anterior is 

 situated laterally and half-way down the head, and the posterior at the outer corners. 

 The median tentacle is very long, reaching to the 8th chaetiger when laid along the 

 back, and the lateral tentacles are extremely small. The palps are very slender and 

 slightly longer than the median tentacle, which itself is longer than the tentacular cirri. 

 The dorsal cirri are long and reach to the tips of the bristles, and the ventral cirri just 

 reach to the end of the feet. The tentacles and cirri are hirsute, but the palps appear 

 smooth. 



The first pair of elytra is rounded, and the remainder are oval. Around the outer 

 edge (Fig. 16, 6) are a few sparse cilia, and the outer half of the scale is thinly dotted 

 with small conical tubercles. 



The feet (Fig. 16, c) are biramous and harmothoid in type, with long sheathed acicula 

 protruding from both branches. The dorsal bundle consists of a number of backwardly 

 curved scaly bristles (Fig. 16, d)\ just above the aciculum there are two chaetae that 

 diflfer slightly from the rest: one (Fig. 16, e) is unusually broad and short, with its end 

 projecting a short distance from the chaeta sac, and the other is of the same kind as 

 the rest of the dorsal bristles but larger (Fig. 16,/) in all dimensions. All the dorsal 

 bristles have a smooth tip. 



