91 



Polypstokkens hele Længde er 580 Mm., hvoraf den 

 sterile Del udgjør 200 Mm., den polypbærende 380 Mm. 

 Rachis er lige, stiv, og paa den øverste Ende rager Axen 

 10 Mm. over Sarcosomaet 1 ). Stilken er temmelig bøielig, 

 aftager efterhaanden i Tykkelse, udvider sig derpaa, bliver 

 tenformig og ender i en stump Spids (Tab. 4, Fig. 1). 



Cellerne ere conisk tilspidsede og sammenvoxede fra 

 Basis til Spidsen, hvorved Finnen (Bladet) dannes. Om- 

 trent den nedre Halvdel af Finnernes indvendige Flade 

 er fastvoxet til Hachis, hvilket gjør, at Finnen ligger tæt 

 tilsluttet til Stokken. Paa Finnens ydre Flade, lidt under 

 dens Midtparti, sees en yderst svag Sammensnøring, der 

 svarer til det Sted, hvor Sammenvoxningen paa den indre 

 Flade ophører. Finnerne sidde afvexlende i en temmelig 

 skraa Retning paa Stokken, saaledes nemlig, at de med 

 deres bredeste Del gaa fra Bugfladen fortil og opad mod 

 Dorsalfladen, hvor de blive meget småle og skilles fra 

 de paa den modsatte Side tilstødende kun ved en fin 

 Linie (Fig. 2, 3). Den underliggende Finnes øverste Rand 

 støder til Grunddelen af den ovenfor siddende, hvorved 

 der næsten intet Mellemrum er at se. 



I levende Tilstand derimod kan Finnen bevæges noget 

 ud fra Stokken, og da fremkommer et Mellemrum af 

 omtr. 2 Mm.'s Bredde, hvilket næsten ganske er besat 

 med Zooider. Disse fortsætte sig over paa Dorsalfladen 

 langs den førbeskrevne Linie, hvor de staa til Slutning 

 i kun én Række (Fig 2, 3, c, c). Finnernes Antal paa 

 50 Mm. af Stokkens Længde udgjør 14 Par. 



Cellerne have en cirkelrund Aabning, ere ialminde- 

 lighed 10, yderst sjelden derover; de største, der vende 

 mod Bugfladen, ere 3 Mm. lange, og de mindste, der ind- 

 tage Midten af Dorsalfladen, ere 1 Mm. Polyperne have 

 en temmelig kort cylindrisk Krop med noget tykke Ten- 

 takler, der ere forsynede med mange Traade, og kunne 

 fuldstændig trækkes ind i Cellerne. (Fig. 6). 



Rachis er paa Bugfladen nøgen og forsynet med en 

 dyb Fure. (Fig. 5). 



Axen er rund, traadformig, tykkest i den øverste, 

 tvers afskaarne Ende, hvorimod den i den nederste Del 

 er haarformig, og ender i en lille Krog (Fig. 7). 



Stokken er chamoisfarvet i levende Live ; Cellerne og 

 Polyperne bleggule. 



Findested: Først er den funden af Districtslæge 

 Fleischer i Varangerfjord; nogle Aar senere paa samme 

 Localitet af Sars og Dani eissen i en Dybde af 60—100 



! ) Herklots og flere med ham have antaget, at Grunden til at 

 Axen i den øverste Ende er blottet, hidrører fra en Contraction af 

 Sarcosomaet, som Følge af Opbevaringsvædsken ; dette forholder 

 sig ikke saa* Tvertom ere vi overbeviste om, at dette er en natur- 

 lig Tilstand, og ikke fremkaldt ved Contraction af Sarcosomaet. 

 Saavel paa denne Art, som paa flere andre Slægter og Arter viste 

 samtlige Exemplarer i levende Live den samme nøgne Axe, ligesom 

 at Sarcosomaet var fastvoxet til det Sted, hvor Axen begynder at 

 blive blottet. Paa et Exemplar saa vi endog flere Serpulaer fæstede 

 til den nøgne Del. (Se Fig. 3 d). 



The whole length of the polypary is 580 Mm. of which 

 the sterile part 200 and the polypiferous 380 Mm. The 

 rachis is straight and stiff and at the upper end the 

 axis projects 10 Mm. beyond the sarcosoma *). The stalk 

 is rather flexible, diminishing gradually in thickness, then 

 becoming enlarged and fusiform, and terminating in a 

 blunt point (see tab. 4, fig. 1). 



The cells are conically pointed, and connate from 

 the base to the point, whereby the fin (the leaf) is formed. 

 About the lower half of the interior surface of the fin is 

 connate with the rachis which causes the fin to lie close 

 in to the polypary. On the exterior surface of the fin, 

 a little below the middle, appears an extremely slight con- 

 striction corresponding to the place where the attach- 

 ment of the interior surface ceases. The fins are situ- 

 ated alternately in a rather oblique direction on the 

 polypary, so that with their broadest part they extend 

 from the ventral surface forward and upward to the dorsal 

 surface, where they become very narrow, and are only 

 separated from those on the opposite side by a fine line 

 (see fig. 2, 3). The upper margin of the underlying fin 

 meets the basal part of that situated above it, so that 

 scarcely any interval appears. 



In the living state the fins can move a little outwards 

 from the polypary, and then there appears an interval 

 of about 2 Mm. width, nearly entirely covered with zooids. 

 These are continued onto the dorsal surface along the 

 line previously described, where they stand at last in 

 only one row (see f. 2, 3, c, c). The number of the fins 

 at 50 Mm. of the length of the polypary makes 14 pairs. 



The cells have a circular opening, and are usually 

 10, very seldom more; the largest, turned towards the 

 ventral surface, are 3 Mm. long; and the smallest, which 

 occupy the middle of the dorsal surface, 1 Mm. The 

 polyps have a rather short cylindrical body with some- 

 what thick tentacles bearing many filaments, and suscep- 

 tible of being drawn completely into the cells, (see fig. 6). 



The rachis is on the ventral surface naked, and has 

 a deep furrow (see fig. 5). 



The axis is round, filiform, thickest at the upper 

 truncated extremity, while the lower part is capillary and 

 terminates in a little hook (see üg. 7). 



The polypary is of a chamois color during life. The 

 cells and the polyps pale yellow. 



Habitat. It was found first by Mr. Fleischer district 

 surgeon in the Varangerfjord; some years afterwards in 

 the same locality by Sars and Daniels sen, at a depth of 



l ) Herklots and several others have presumed that the reason 

 of the axis being bare at the upper end, is to be sought for in a 

 contraction of the sarcosoma under the influence of the preserving 

 liquid; this is however not the case; on the contrary, we are 

 convinced that it is a natural state, and not produced by any con- 

 traction of the cænenchym. As well in this species as in many 

 other genera and species, all the specimens exhibited during life 

 the same bare axis and likewise the sarcosoma connate with (atta- 

 ched by growth to) the axis at the place where the axis begins to 

 be bare. In one specimen, we even saw several serpulæ attached 

 to the bare part (see fig. 3 d). 



