tilbage at ønske, i Haab om at kunne ved gjentagen Iagt- 

 tagelse stadfæste og complettere den; men da jeg ikke 

 har været heldig nok til senere at gjenfinde dette Dyr, 

 tror jeg ikke at burde undlade ved nærværende Leilighed 

 at meddele den. 



Dyret har en de forrige Arter meget lignende Form 

 (Fig. 7, 8), uden dog at have det ombøiede eller nikkende 

 Udseende af Køllen eller Dyrets øverste Del. Begge de 

 iagttagne Exemplarer vare omtrent af ens Størrelse, f " 

 lange, det ene fæstet med dets nederste Ende ved fine 

 Rodtrevler (Fig» 8, b) til en rød Alge (Ptilota plumosa), 

 det andet til noget dyndblandet Sand. 



Det tynde, hudagtige, lysbrunlige, ikke synderlig gjen- 

 nemsigtige Rør omgiver Dyrets cylindriske, nedentil efter- 

 haanden noget tykkere og paa Enden conisk tilspidsede 

 Stilk eller Stamme (a) (hvilken jeg desværre forsømte at 

 undersøge nøiere, saa at jeg ikke med Bestemthed kan 

 sige, om den har de hos de øvrige Arter forekommende 

 characteristiske opake Længdestriber) lige op til det Sted, 

 hvor den gaar over i den saakaldte Kølle eller egentlige 

 Krop (c c). Denne er smuk minierød og har den sædvan- 

 lige coniske Form ; men dens øvre Ende (d), hvor Munden 

 er anbragt, er tykkere og mere tilrundet end hos de 

 andre Arter. 



Køllens midterste Del omgives af en Krands eller 

 enkelt Rad af 20 traaddannede, imod den ydre Ende efter- 

 haanden noget tyndere farveløse (hyaline) Tentakler, (f f) 

 af omtrent den halve Stilks Længde. Disse Tentakler, 

 som hos de andre Arter af SI. Corymorpha ere lidet eller 

 slet ikke contractile, kunne her ikke ubetydeligt forkortes 

 og udmærke sig desuden ved deres zirlige ringede Udse- 

 ende (Fig. 10). De omgives nemlig i deres hele Længde 

 af talrige, i regelmæssig Afstand fra hverandre staaende 

 Tvær-Ringe (a), hvilke hæve sig noget over Tentaklernes 

 cylindriske Overflade og bestaa af lutter tæt sammen 

 staaende meget smaa blæreformige Nesselkapsler, hvorved 

 Ringene vise sig mørkere end deres hyaline Mellemrum. 

 Den finere Structur af Nesselorgänerne kunde jeg des- 

 værre dengang, da jeg manglede et godt Mikroskop, ikke 

 undersøge. Hos alle de øvrige Arter af Slægten ere disse 

 Tentakler glatte og uden Ringe. 



De øvre eller korte Tentakler (Fig. 8, e e, Fig. 9), 

 hvis Længde omtrent udgjør en Fjerdedel af Køllens Tvær- 

 diameter, ere gulrøde, forholdsvis meget tykke (ligesaa 

 tykke som de nedre lange Tentakler), rigide (ikke con- 

 tractile) og ende med en lidt tykkere med Nesselkapsler 

 tæt besat Knop (Fig. 9, e). Deres Antal er 8—10 (hos 

 det ene Exemplar fandtes 10, hos det andet kun 8) og 

 de danne en Rad omkring den øvre Del af Køllen i Nær- 

 heden af Munden. Disse Tentakler afvige saaledes meget 

 fra samme hos de øvrige norske Arter, hvor de altid ere 

 langt talrigere, tyndere, ikke fortykkede eller Knopformige 

 i den ydre Ende, og sidde adspredte, ikke ordnede i 

 Rader. Paa Køllens nederste Del, langt under de lange 

 Tentaklers Kreds, eller der, hvor hin gaar over i Stilken, 



to be desired, in the hope of being able, by repeated 

 observation, to confirm or complete it; but, not having 

 been subsequently so fortunate as to find this animal 

 again, I think that I ought not on the present occasion 

 to omit communicating my description of it. 



The animal has a form very much like that of the 

 preceding species (fig. 7, 8) but without the curved or 

 bowed appearance of the upper or thicker part of the 

 animal. Both the specimens observed were of about the 

 same size %" long: one attached at its lower extremity 

 by fine rootlets (fig. 8—6) to a red Alga (Ptilota plumosa) 

 the other to some sand mixed with mire. 



The thin, skin-like light-brownish not very transparent 

 tube encloses the stem or trunk of the animal (a) which 

 is cylindrical, becoming gradually thicker below and termi- 

 nating in a conical point. Unfortunately I neglected to 

 examine this tube more minutely; so that I cannot say 

 decidedly whether it has the characteristic opaque lon- 

 gitudinal stripes observed in the other species. The tube 

 extends up to that part where the stem goes over into 

 the so-called club, or proper body (c. c). This is of a 

 beautiful minium red color, and has the usual conical 

 form; but its upper end (d) where the mouth is situated, 

 is thicker and more rounded than in the other species. 



The central part of the club is surrounded by a circle 

 or single row of 20 tentacles (f. f.) which are filiform, 

 gradually thinner towards the extremity, colorless (hyaline) 

 and of about half the length of the stem. These ten- 

 tacles, which in the other species of the genus Cory- 

 morpha, are very little or not at all contractile, may here 

 be considerably shortened, and are moreover remarkable 

 for their ornamentally ringed structure (fig. 10). They 

 are surrounded in their whole length by numerous trans- 

 verse rings (a) placed at regular intervals, raised a little 

 above the cylindrical surface of the tentacle, and con- 

 sisting entirely of closely congregated very small vesicular 

 thread-cells which cause the rings to appear darker than 

 the hyaline intervals. I was unfortunately not able at the 

 time to examine the finer structure of the urticatory 

 organs; not having a good microscope at hand. In all 

 the other species of the genus these tentacles are smooth 

 and without rings. 



The upper or short tentacles (fig. 8 e e, fig. 9) the 

 length of which is about the fourth part of the trans- 

 verse diameter of the club, are yellowish red, propor- 

 tionally very thick (as thick as the lower long tentacles) 

 rigid (not contractile) terminating in a somewhat thicker 

 knob (üg. 9 c) closely covered with thread-cells. They 

 are 8 — 10 in number (in one specimen 10 were found; 

 in the other only 8) and they form a row round the 

 upper part of the club in the vicinity of the mouth. 

 These tentacles differ therefore very much from those of 

 the other Norwegian species, in which they are always 

 much more numerous and thinner, not enlarged or knob- 

 shaped at the extremity; and are scattered, not arranged 

 in rows. On the lower part of the club, far below the 



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