137 



Cerianthus Vogti l , n. sp. 



Tab. V. Fig. s, 9; Tab. XXV. Fig. 



14. 



Legemet er cylindrisk, lidt traktformigt, henved 80""" 

 langt. 20™'" bredt i den øverste Ende og li""" i den nederste. 

 Kroppens udvendige Flade er glat til opiraod 1 (.)""" fra 

 Mundskiven, hvor den bliver foldet paalangs. Folderne 

 ere omtrent lige lange og lige fremtrædende, naar und- 

 tages en. der er bredere end de øvrige og strækker sig 

 hengere ned paa Kroppen. Ligeover for denne brede Fold 

 sees paa den modsatte Side af Kroppen en yderst smal, 

 men dyb Fure, der strækker sig fra Tentakelranden til et 

 Stykke nedenfor Legemets Midte, hvor den bliver meget 

 utydelig, saa at det ikke kan afgjøres. om den naar lige 

 ned til den aborale Ende. Denne er forsynet med en 

 rund. temmelig stor Aabning. som udvider og sammen- 

 trækker sig. saa den synes at have en Sphincter. 



Kolumnens overste Ende udvider sig traktformigt og 

 paa dens krenulerede Rand er der en Række Tentakler. 

 Indenfor denne sees den noget fordybede Mundskive med 

 den lidt aflange Mund med sine to Mundvinkler; omkring 

 Munden er en Række Tentakler, og fra denne til den ydre 

 Tentakelrække har Mundskiven en Glorie af fine Folder, 

 hvis Antal svarer til Tentaklernes, Tab. V. Fig. 8. 



Randtentaklerne. der danne en uafbrudt Række og 

 ikke staa i flere Cykler, ere 36 i Antal. ikke retraktile, 

 have en Længde af omkring 30""" og ere temmelig tykke ved 

 Granden, men smalne betydeligt af, saa at de i Spidsen 

 ere yderst fine, traadformige. Tal). V, Fig. 8. Der er kun 

 en Randtentakel, der staar ligesom isoleret og stoder til 

 den omtalte brede Fold paa Kroppens ydre Flade; denne 

 Tentakel er meget kortere end de ovrige. 



Mundtentaklerne heller ikke retraktile, ere baade 

 meget kortere og tyndere end Randtentaklerne. men til- 

 stede i samme Antal som disse (36). De staa i en Række, 

 men ikke lige langt fra hverandre, idet omtrent en Trediedel 

 staar temmelig langt fra hverandre og ere noget længere 

 end de øvrige, Tab. XXV, Fig. 9 a, der staa tættere og 

 eie tildels kortere. Tab. XXV, Fig. 9 fr. De længere og 

 mere fra hverandre staaende Mundtentakler svare til den 

 ydre Kropsside. hvor den omtalte fine Længdefure tindes. 



Farven. Kroppen er bleggul, spillende lidt i det 

 Rosenrøde. Randtentaklerne ere paa deres aborale Flade 



1 Arten er oplcaldt efter den geniale Naturforsker Carl Vogt. 

 Den norske Nordhavsexpedition. 1 >. ('. Danielssen: Actiuida. 



Cerianthus Vogti x . n. sp. 



Pl. V. figs. s. 9; Pl. XXV. figs. 7—14. 



The body is cylindrical , slightly infundibulitorm. 



measures about 80""" in length. 20 in breadth at tin 



uppermost and (i""" in breadth at the lowest extremity. 

 The external surfaoe of the body is smooth until within 

 a distance of 10""" from the oral dise, where it becomes 

 folded longitudinally. The folds are about uniform in 

 length and equally prominent, with the exception of a 

 single one, which is broader than the others and extends 

 itself farther down the body. Opposite this broad fold, 

 on the opposite side of the body, an extremely narrow 

 but deep furrow is observed, which stretches from the 

 tentacular margin to a spot below the middle of the body. 

 where it becomes very indistinet, so that it is impossible 

 to determine whether it reaches qnite down to the aboral 

 extremity or not. The latter is furnished with a round, 

 rather large aperture which dilates and contracts itself, 

 so that it appears to be supplied with a sphincter. 



The uppermost extremity of the column becomes dilated 

 in infundibuliform, and upon its crenated margin there is 

 placed a series of tentacles. To the inside of this is 

 observed the somewhat depressed oral disc with the 

 slightly oblong oral aperture and its two oral angles; 

 round the oral aperture there is a series of tentacles, aud 

 from it to the exterior tentacular series the oral disc has 

 a halo of fine folds, whose number corresponds with that 

 of the tentacles (Pl. V. fig. 8). 



The marginal tentacles, which form an uninterrupted 

 series and are not placed in several cycles, are 36 in 

 number, non-retractile. measure about 30""" in length. are 

 pretty thick at the base but diminish considerably in 

 thickness upwards, so that at the point they become 

 extremely fine and filamentous (Pl. V, fig. 8). There is 

 only a single marginal tentacle, which, as it were. stands 

 isolated and unites to the broad fold on the external 

 surface of the body previously spoken of; this tentacle is 

 much shorter than the others. 



Neither are the oral tentacles retractile, they are both 

 much shorter and thinner than the marginal tentacles, but 

 are present to the same number as those (36). They are 

 placed in a single series, but not at uniform intervals 

 apart from each other, as about one third of them are 

 placed pretty far apart from each other, and these are 

 somewhat longer than the others (Pl. XXV, fig. 9 a), which 

 stand closer together and are partly shorter (Pl. XXV, 

 fig. 9 h). The longer oral tentacles, placed more apart 

 from each other. correspond to the outer side of the 

 body, where the fine longitudinal furrow already spoken 

 of is found. 



The colour. The body is pale-yellow with a slight 

 rose-red play of colour. The marginal tentacles are. on 



1 The species is designated after the genial Naturalist Carl Vogt. 



18 



