. 5 MM Fig. 20. Pionosyllis comosa. Head from above. Pionosyllis comosa, Gravier (Fig. 20). Gravier, 1907, p. 15, pi. ii, figs. 12-13. Benham, 1921, p. 22. Occurrence. St. 929, New Zealand (4). Specific characters. I have some hesitation in attributing these New Zealand specimens to Gravier's Antarctic species. They are all fragmentary and the largest measures 24 mm. by 2 mm. for 43 chaetigers. The body is dorsally arched, and in spirit there are no colour-markings. The head (Fig. 20) is about 11 times as long as broad. It is produced backwards into two long lobes divided by a deep median clef
. 5 MM Fig. 20. Pionosyllis comosa. Head from above. Pionosyllis comosa, Gravier (Fig. 20). Gravier, 1907, p. 15, pi. ii, figs. 12-13. Benham, 1921, p. 22. Occurrence. St. 929, New Zealand (4). Specific characters. I have some hesitation in attributing these New Zealand specimens to Gravier's Antarctic species. They are all fragmentary and the largest measures 24 mm. by 2 mm. for 43 chaetigers. The body is dorsally arched, and in spirit there are no colour-markings. The head (Fig. 20) is about 11 times as long as broad. It is produced backwards into two long lobes divided by a deep median cleft, and behind the head there is a low nuchal collar. There are two pairs of orange- coloured eyes. The palps are fused at their base and the median tentacle is about three times as long as the head. The laterals are about two- thirds of this. There are two pairs of tentacular cirri In the anterior region the dorsal cirri are very long, being equal to the length of about 12 segments in the front region. Over the rest of the body they are rather longer than the body is broad. The pharynx extends to the 13th chaetiger and the proventriculus to the 22nd. There is a single anterior tooth and the mouth of the pharynx appears to be quite smooth; there is a circle of papillae around the pharyngeal rim. The feet are rounded in outline and are supported by three curious acicula with blunt tips that are curved at the end. The bristles have stout denticulated and bidentate end- pieces, longer in the upper part of the foot than in the lower. The ventral cirri are rather stout, more or less conical structures, about as long as the feet. One of the specimens is an epitocous female with swimming bristles beginning at the 19th chaetiger. The posterior region in all these examples is lacking, and I have seen no simple bristles. Remarks. I have compared these specimens with an example from South Georgia, and except for the great backward prolongation of the head I can find no ground for separatio
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