140 



Kropshulheden og de den indesluttede Organer ere 

 beklædte med Peritoneum» 



Farven er svag gulbrun med et mørkere brunt Belte 

 omkring Grunden af Snabelen og Kroppens bagerste Ende. 



Funden i Korsfj orden og Bergensfj orden paa omtrent 

 50—100 Favnes Dyb, sandig Bund; sjelden. Yed den 

 franske Kyst skal den være temmelig almindelig i Stranden. 



Som det sees af ovenstaaende Synonymi, have vi 

 slaaet Phascolosoma elongatum, Keferst sammen med 

 Ph. vulgare, Blainville; thi ved Sammenholden af Be- 

 skrivelserne har det ikke været os muligt at finde et 

 eneste Mærke, der skulde kunne adskille dem. Keferstein 

 selv yttrer ogsaa, at det nok er muligt, at hans Ph. elonga- 

 tum er den samme som Blainvilles Ph. vulgare, og clet 

 eneste Skjelnemærke, han angiver for sin Art, nemlig 

 Mangelen af det brunsorte Belte paa Kroppens bagerste 

 Ende, er ikke engang altid tilstede ; thi, siger han, blandt 

 de mangfoldige Exemplarer af Ph. elongatum, der have staaet 

 til hans Disposition, fandt han nogle, der vare forsynede 

 med Beltet. Men selv om dette virkelig havde manglet, 

 var det dog neppe tilstrækkeligt til deraf at grunde en 

 ny Art, 



PHASCOLOSOMA (SIPUNCULUS) 

 STBOMBI, Montagu. 

 Phascolosoma Strombi, Keferstein. 

 Zeitschrift f. wiss. Zoologie, 15 B., Pag, 430, Taf. XXXI, Fig, 

 10, Taf XXXIII, Fig. 34, 35, 36. 



Kefersteins Beskrivelse er saa fuldstændig, at vi 

 kunne henvise til den. Der er imidlertid ingen af de os 

 bekjendte Phascolosomaer, der variere saameget som 

 netop denne Art. Stundom er Kroppen glat, Papillerne 

 yderst smaa, og paa Snabelen mangler Hager, stundom 

 ere Papillerne temmelig store, og paa Kroppen findes 

 ingen Hager, men vel paa Snabelen; men hyppigst er det 

 dog, at Kroppens Hud er glat, forsynet med smaa Pa- 

 piller samt et Belte af Hager, og at den øverste Ende 

 af Snabelen har 4 — 6 Binge med Hager. 



X| Den er almindelig overalt paa sandig Bund langs 

 hele Kysten lige til Vadsø, paa en Dybde fra 20—100 Favne. 



PHASCOLOSOMA STROMBI VARIETAS CAPITA- 

 TUM. (SIPUNCULUS CAP1TATUS, IUthke). 



Nov. Act. Acad. Leop. Carol., XX, p. I, 1844, Pag. 143—147, 

 Taf. VI, Fig. 20-23. 



Den forekommer paa samme Localiteter som den 

 foregaaende, men sjeldnere. 



The perivisceral cavity and the organs contained in 

 it, are clothed with the peritoneum. 



The color is slightly yellowish brown, with a darker 

 brown belt round the base of the proboscis and the 

 posterior end of the body. 



Found in the Korsfjord and Bergensfjord at the depth 

 of about 50—100 fathoms, in sandy bottom, rare. On 

 the French coast it is said to be rather common on the 

 beach. 



As will appear from the above synonymy, we have 

 placed the Phascolosoma elongatum Keferstein together 

 with Phase, vulgare Blainville; for, on comparing the 

 descriptions, we have not been able to find a single feature 

 by which they might be distinguished. Keferstein himself 

 states also that it is very possible his Ph, elongatum is 

 the same as Blainville's Ph. vulgare; and the only mark 

 of distinction which he indicates for his species, namely 

 absence of the brownish black belt on the posterior end 

 of the body, is not even always to be observed; for he 

 says that among the many specimens of Ph. elongatum 

 which he has had at his disposal, he found some which 

 had the belt. But even if this belt had really been ab- 

 sent, it would have been scarcely sufficient to justify the 

 establishment of a new species. 



PHASCOLOSOMA (SIPUNCULUS) 

 STROMBI, Montagu. 

 Phascolosoma Strombi, Keferstein. 

 Zeitsch. f. wiss. Zoologie, 15 B., p. 430, Taf. XXXI, fig. 10, 

 Taf. XXXIII, fig. 34, 35, 36. 



Kefersteins description is so complete that we may 

 refer to it. There is however none of the so-called Phas- 

 colosomas that varies so much as this particular species. 

 Sometimes the body is smooth, the papillæ extremely 

 small, and without hooks on the proboscis; sometimes 

 the papillæ are rather large, and no hooks are to be 

 found on the body but only on the proboscis; most 

 frequently however the skin of the body is smooth, covered 

 with small papillæ, and has a belt of hooks, and the 

 upper extremity of the proboscis has 4 — 6 rings with 

 hooks. 



It is common everywhere on sandy bottom along the 

 whole coast right up to Vadsø, at the depth of from 

 20—100 fathoms. 



PHASCOLOSOMA STROMBI VARIETAS CAPI- 

 TATUM. (SIPUNCULUS CAPITATUS, Kathke). 



Nov. Act. Acad. Leop. Carol, XX, p. I, 1844, p. 143-147, 

 Taf. VI, fig. 20-23. 



It is found in the same localities as the preceding, 

 but more rarely. 



