103 



midlerne og Søvandet føres fra Munden igjennem Svælg- 

 renden ned i Mavehulheden, den anden som Tarm. Det 

 synes, som om her er paabegyndt et Arbeide mod en 

 høiere Organisation; hvor langt det vinder sig frem, faar 

 staa derhen, men yderst mærkeligt er under alle Omstæn- 

 digheder dette Forhold. For at gjøre dette nogenlunde for- 

 staaeligt, følge Tversnittene under hverandre i den Orden, 

 de ere fremstillede. Tab. XIV, Fig. 45, er et Tversnit fra 

 den øverste Del af Polypen med sit Svælg, strax ovenfor 

 Svælgrendens Begyndelse; her sees det listeformige, ovale 

 Fremspring fra høire Væg. Fig. 45, a, hvilket, idet det 

 slutter sig til venstre Væg, dækker Svælgrenden, Fig. 45, &, 

 imedens den øvrige Del af Svælget er aaben. Fig. 46 

 fremstiller et lignende Tversnit noget under det første, paa 

 hvilket ikke alene Fremspringet fra høire Væg sees, Fig. 46, a, 

 men ogsaa Begyndelsen af det 2det Fremspring, Fig. 46, b- 

 Fig. 47 fremstiller et Tversnit lidt under det foregaaende, 

 hvilket viser begge Fremspringene i deres største Udbred- 

 ning, saaledes at høire Fremspring, Fig. 47, a, slutter sig 

 tæt til venstre Væg, imedens venstre Fremspring, Fig. 47, b, 

 naar næsten hen til høire Væg. Fig. 48 fremstiller et Tver- 

 snit endnu længere nede, og her sees kun den nederste, smale 

 Del af Fremspringet fra høire Væg, Fig. 48, a, imedens 

 det fra venstre Væg endnu har sin fulde Høide og rager 

 lige hen til høire Væg, Fig, 48. b. Fig. 49 fremstiller et 

 Tversnit fra Svælgets nederste Ende, paa hvilket der endnu 

 sees en liden Rand af Fremspringet paa venstre Væg, 

 Fig. 49, a,. imedens det paa høire Væg er ganske forsvun- 

 det, Fig. 49, b. De mange mellemliggende Tversvit har jeg 

 ikke fundet nødvendigt at gjengive, da de egentlig intet 

 yderligere oplyser. 



Farven. 



Farven er gul, spillende noget i det Røde, især gjælcler 

 dette sidste Polyperne, som udstrakte ere meget klare. 



Findested. 

 Station 312. 3 Exemplarer. 



Slægtskarakter. 



Zoanthodemet træformet. Stammen grenet. Grenene 

 dele sig i flere Smaagrene. Coenenchymet sparsomt. 

 Kanalerne vide. Polyperne cylindriske med en lang Bag- 

 krop, ikke retraktile. Svælget forsynet med to listeformige 

 Fremspring (Klapper). Stammen, Grene, Smaagrene og 

 Polyper rige paa Spikier, hvoraf Kølle- og Klubbeformen 

 er mest fremtrædende. 



tube, by which the food and seawater are led from the oral 

 aperture, through the gullet-passage, down into the ventral 

 cavity; and the other as an intestine and rectum. It appears 

 as if there was, here, originated a step towards a higher 

 organisation; how far it proceeds remains unsolved, but 

 this relation is, under all circumstances, very remarkable. 

 In order to make this the more intelligible, the sections 

 are arranged, under each other, in the order that they are 

 presented. PL XIV, fig. 45 is a transverse section, from the 

 uppermost part of the polyp, with its gullet, immediately 

 above the commencement of the gullet-passage. Here is 

 seen the fillet-formed Oval protuberance from the dextral 

 wall (PI. XIV, fig. 45, a) which, as it passes up to the 

 sinistral wall, covers the gullet-passage (PI. XIV, fig. 45, b) 

 whilst the remaining part of the gullet is open. PI. XIV, 

 fig. 46 shows a similar transverse section, from a little 

 below the first one ; on it is seen, not only the protuberance 

 from the dextral wall (PI. XIV, fig. 46, a) but also the 

 commencement of the second protuberance (PI. XIV, 

 fig. 46, b). PL XIV, fig. 47 shows a protuberance a little 

 below the preceding one, and shows both the protuberances 

 in their greatest width, so that the dextral protuberance 

 (PL XIV, fig. 47, a) closes tight to the sinistral wall, 

 whilst the sinistral protuberance (PL XIV, fig. 47, b) reaches 

 almost to the dextral wall. PL XIV, fig. 48 shows a trans- 

 verse section still lower down, and here, is seen only the 

 lowest narrow part of the protuberance from the dextral 

 wall (PI. XIV, fig. 48, a) whilst that from the sinistral 

 wall still retains its entire height and projects quite up to 

 the dextral wall (PL XIV, fig. 48, 6). PL XIV, Fig. 49 shows 

 a transverse section from the lowest extremity of the gullet, 

 upon which there is still seen a small margin of the pro- 

 tuberance on the sinistral wall (PL XIV, fig. 49, a), whilst 

 upon the dextral wall it has quite disappeared (PL XIV, 

 fig. 49, b). I have not found it necessary to supply the 

 numerous intermediate sections as they do not, really, give 

 any further information. 



Colour. 



The colour is yellow, shading somewhat to red. This 

 is especially the case with the polyps, which, when extended, 

 are very pellucid. 



Habitat. 



Station No. 312. Three specimens. 



Generic characteristics. 



The Zoanthodem arboraceous. The stem ramous. 

 The branches ramify into several branchlets. The Sarcosoma 

 sparing. The ducts wide. The polyps cylindrical, with a 

 long posterior body, non-retractile. The gullet furnished 

 with two fillet-formed protuberances (Flaps). The stem, 

 branches, branchlets, and polyps, rich in spicules, of which 

 subclavates and clavates are the most prominent forms. 



