. Discovery reports. Discovery (Ship); Scientific expeditions. TEREBELLIDAE 197 characters. Gravier's species had only 28 abdominal segments, and the bristles begin on the 4th instead of the 2nd segment. The shape of the hooks is also different. This species belongs to the same group as P. arenivorus and P. caliendrum, but differs in having very much fewer notopods. Genus Lysilla, Malmgren Lysilla loveni, Malmgren, var. macintoshi, Gravier. Hessle, 1917, p. 231. Lysilla macintoshi, Gravier, 1907, p. 56, fig. 37. St. 28. 16. iii. 26. West Cumberland Bay, South Georgia. 3-3 miles S 45° W of Jaso
. Discovery reports. Discovery (Ship); Scientific expeditions. TEREBELLIDAE 197 characters. Gravier's species had only 28 abdominal segments, and the bristles begin on the 4th instead of the 2nd segment. The shape of the hooks is also different. This species belongs to the same group as P. arenivorus and P. caliendrum, but differs in having very much fewer notopods. Genus Lysilla, Malmgren Lysilla loveni, Malmgren, var. macintoshi, Gravier. Hessle, 1917, p. 231. Lysilla macintoshi, Gravier, 1907, p. 56, fig. 37. St. 28. 16. iii. 26. West Cumberland Bay, South Georgia. 3-3 miles S 45° W of Jason Light. 168 m. Gear DC. Bottom: mud. Five specimens. St. 30. 16. iii. 26. West Cumberland Bay, South Georgia. 2-8 miles S 24° W of Jason Light. 251m. GearDLH. Bottom: mud and stones. Three specimens. St. 181. 12. iii. 27. Schollaert Channel, Palmer Archipelago. 64° 20' 00" S, 63° 01' 00" W. 160-335 m. Gear OTL. Bottom: mud. One specimen. Remarks. I think Hessle is right in treating ^ 4mm-- Gravier's species as a variety of the northern form. The present specimens are exceptionally large, measuring as much as 80 mm. by 5 mm. at the widest part. The northern form has not been recorded with a length greater than 60 mm. The bristles are wholly enclosed within a layer of tissue, and their ends all have the appearance of having been broken; ^Lj;.;//^ loveni, v^r. macintoshi. ^^ °_ Genitonephndial onnces. I cannot find a trace of the characteristic spatulate enlargement at the tip. In two of the specimens, females filled with eggs, in the 4th, 5th and 6th chaetigers the place of the nephridial papillae is taken by large cordiform orifices (Fig. 82) with glandular lips. Similar orifices are mentioned by Gravier as occurring on the 3rd, 4th and 5th chaetigers in some of his examples. I regard these orifices as nephridial papillae modified for the release of the sexual products. They occur in the female only. It may have been the observation of similar orifices that
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