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; Fig.Sz^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 led Hessle to write that contracted nephridial papillae in the northern 



form can assume a more or less sucker-like appearance. 



Genus Hauchiella, Levinsen 



Hauchiella tribullata (Mcintosh). 



Hessle, 1917, p. 233, with synonymy. 



St. MS 68. 2. iii. 26. East Cumberland Bay, South Georgia. 17 miles S i E to ^ cables 

 SE X E of Sappho Point. 220-247 m. Gear NRL. Three specimens. 



Remarks. The largest example measures 49 mm. in length without the tentacles; 

 Hessle gives 30 mm. as the greatest recorded length. I see four pairs of nephridiopores, 

 of which the posterior three are larger than the first pair. 



