KUNOL. SV. VET. AKADEMIENS HANDUNGAR. BAND 47. ff.O I. Ill 



papilke are scattered all över the body, except posteriorly, where tlicy are more 

 crowded. The books bebind the tcntacles are more or less sparse and intermingled 

 vvith papillse. They bave a crooked appearanee (figs. 37 — 39). 



The arms and the pores of the two segmental organs open at about the middle 

 of the body, almost on a level with each other. The dorsal retractors are attached 

 slightly behind those openings, and the ventral ones further backwards (figs. 35 and 

 36). I bave not been able to make ont vvhether the animal is in possession of a 

 contraetile vessel or not. 



Phascolosoma minutum Keferstein(?). 



Pl. III, figs. 42—45 and Pl. IV, figs. 46—49. 



Habitat. — Falkland islands: Port William, 12 m., sand and stones, 3 /y 1902. 

 6 minute specimens. 



Total length of the largest specimen 5 mm. Trunk cylindrical, slightly tapering 

 behind (fig. 42 — 43). True tentacles absent and replaced by some irregular, rounded 

 prominences of the oral disk (figs. 44 — 45). Skin shining, of a brownish colonr, provided 

 with minute papillse (figs. 46—49). Hooks absent. Two ventral retractors attached 

 slightly in front of the posterior extremity of the body. Two free segmental organs. 

 Intestinal spiral composed of about 15 turns, and not attached posteriorly. Muscular 

 layers continuous, not separated into bands. 



Considering the scanty material at my disposal and the smallness of the speci- 

 mens, my description is very imperfect. I must therefore leave it undecided whether 

 the species in question really is identical with Phascolosoma minutum Keferstein or 

 with Ph. sabellarice Théel — supposing that these two forms represent two distinct 

 species — or with any other nearly related species. For my part I cannot present a 

 single character distinguishing the specimens brought home from the Falkland Islands 

 from e. g. Phascolosoma sabellarice of the Swedish west-coast. 



Phascolion strombi (Most.)(?). 



Pl. IV, figs. 50—66 and Pl. V, fig. 75. 



Habitat. — Shag Rocks Bank between South Georgia and Falkland Is- 

 lands: 53° 34' S.— 43° 23' W., 160 m., sand and gravel, 19 A 1902. Several spe- 

 cimens. 



The specimens from Shag Rocks Bank present such a puzzling resemblance to 

 Phascolion strombi of our northern seas, that I am quite unable to demonstrate a 

 single distinguishing character which would justify the foundation either of a new 

 species or of a variety. The diversities are very insignificant indeed, and not greater 

 than may be found in different specimens of the northern form. 



