SIPUNCULIDAE 253 



the gut seemed much larger in proportion. In most specimens the body was filled with 

 a large mass of gut filled with fine mud, and the retractors occupied only a very small 

 area in the anterior third, very similar to the proportions of the variety trybomi. 

 ? var. hanseni Koren and Danielssen. 



The specimens from St. WS 788 were four in number and ranged from 29 to 64 mm. 

 in length, overall. They seemed to approach this variety. The smallest two specimens 

 were fairly typical, but even in them the skin at the two extremities of the body was 

 assuming a corky appearance, and in the second smallest specimen just below the 

 introvert was a small area where the skin was becoming corky in appearance and pitted 

 with pores, like little rounded pits. In the largest specimen a considerable area at each 

 end of the body had a rough corky appearance, and the whole intermediate area of the 

 body had these small pits scattered over it. Internally, however, the specimens differed 

 from the variety in that the bases of the retractors were not divided. 



var. trybomi Theel. 



Phascolosoma ^ryftomz Theel, 1905, p. 69. 



P. margaritaceum Sars var. trybomi Theel, Fischer, 1924, p. 69; 1925, p. 19. 



P. trybomi Thee], Stephen, 1936, p. 166. 



P. margaritaceum Sars var. trybomi Theel, Stephen, B.A.N.Z.A.R.E. Rep. (in the Press). 



Distribution. Arctic seas: Theel, loc. cit.; Stephen, loc. cit. 



Antarctic, oif Sabrina Land, 64° 28' S, 114° 59' E: Stephen, loc. cit. 



Occurrence. Falkland Islands, Port Stanley Harbour, on the shore amongst mussels. 18. ii. 27. 

 One specimen, about 115 mm. in length, was secured. 



It was undamaged externally, but was somewhat macerated internally. The gut was 

 in part destroyed so that the coils could not be counted. The specimen corresponded 

 closely to that figured by Theel and also with a specimen in my possession taken in the 

 northern North Sea, but with a small difference in colour. The animal from the Falk- 

 land Islands was dirty grey both externally and internally and lacked the mother-of- 

 pearl lustre on the inside of the body well seen in the northern specimens. The Scottish 

 specimen was rose pink both externally and internally. This form has only been re- 

 corded on a very few occasions in northern waters, usually from fairly deep water. It 

 is interesting to find it in the Antarctic, although it has already been recorded in the 

 collections made by the B.A.N.Z.A.R.E. 



8. Phascolosoma nordenskjoldi Theel. 



Phascolosoma nordenskjdhU Theel, 1911, p. 30. 



Distribution. Falkland Islands and South Georgia: Theel, loc. cit. 



Kerguelen: Stephen, B.A.N.Z.A.R.E. Rep. (in the Press). 

 Occurrence. South Georgia: St. MS 68. 220-247 m. 'From root of giant sponge.' 

 Falkland Islands: St. WS 212. 242-249 m. 

 St. WS 225. i6i-i62m. 

 St. WS 236. 272-300 m. 

 St. WS 237. 150-256 m. 

 St. WS 246. 208-267 m. 



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