41 



Musklerne placerede ganske omvendt. De principale Septa 

 ere golde og kjendes frå de øvrige derved, at de ere 

 stærkere udprægede ved deres noget tykkere Bindevævs- 

 membran. 



De sekundære Septa ere ligeledes I"! Par. fuldstæn- 

 dige og golde; paa deres indre Flade ligge de longitudi- 

 nelle Muskler, altsaa i de intraseptale Runi. og paa 

 deres ydre Flade de trapsverselle Muskler, sum vende mod 

 de interseptale Rum. Imellem hvert 2 Par fuldstændige 

 Septa er der 'å Par ufuldstændige, livoraf det midterste 

 (tertiære) er det længste, naar næsteu hen til Svælgrøret 

 og bærer Mesenterialfilamenter og Acontier. De to andre 

 Par ere meget kortere og bære Generationsorganerne, som 

 ere sa a stærkt udfyldte med Æg i forskjellige TJdviklings- 

 stadier, at de ganske lukke Kamrene. Paa disse kvaternære 

 Septa ere Musklerne ikke meget udviklede, hvilket derimod 

 er Tilfældet paa de tertiære, hvor de longitudinelle Muskler 

 ligge som tykke Buske paa den indre Flade, medens de 

 transverselle danne en foldet Membran paa den ydre. 



Findested. 



Statiou 2. Et Exemplar. 

 — 261. To Éxemplarer. 



Hertwig har henført Slægten Bunodes til Sagartider- 

 nes Familie, idet han nemlig har beskrevet en Actinie under 

 Navnet: Bunodes minuta, funden paa Challenger-Expedi- 

 tionen; 1 men han sætter rigtignok et Spørgsmaalstegn 

 foran, hvorvidt den virkelig kan henføres dertil ; thi ifølge 

 Gosse skal Slægten Bunodes ikke have Acontier. omend- 

 skjont han siger, at han engang har fundet saadanne hos 

 Bunodes coronata. Hertwig mener, at Acontierne kunne 

 være i sin store Almindelighed overseet hos Slægten Bu- 

 nodes : men skulde den Mening være feilagtig, anser lian det 

 nødvendigt at danne en ny Slægt saavel for Bunodes minuta 

 som for Bunodes coronata. 



Den af mig ovenfor beskrevne Bunodes abyssorum 

 har ikke alene Acontier. men dens cirkulære Muskler ere 

 endodermale. ligesom den har 12 fuldstændige Septapar; 

 den kan saaledes ifølge Hertwigs Systematik ikke henføres 

 til Sagartiderne, hvorfor det forekommer mig rettest at 

 beholde Familien Bunodidæ. Gosse, og lade den indtil 

 Videre tilhøre denne, da den jo i sit Ydre frembyder ad- 

 skillige Karakterer, der af Gosse ere opstillede som væ- 

 sentlige baade for Familien og Slægten. 



Artskarakter. 



Fodskiven rund: paa dens rynkede Underflade en 



traktformig Fordvbning. i hvis Bund en næsten rund Aal>- 



4 pairs of septa the muscles are placed quite in reverse 

 manner. The principal septa are sterile, and are distingu- 

 ished from the others by being more prominent, from 

 their somewhat thicker connective-tissue membrane. 



The secondarv septa consist, likewise. of 6 pairs of 

 perfect septa. and are sterile; on their inner surface lie 

 the longitudinal muscles - consequently in the intraseptal 

 spaces - - and on their outer surface lie the transversal 

 muscles facing towards the interseptal spaces. Between 

 each 2 pairs of perfect septa there are 3 pairs of imper- 

 fect ones, of which the intermediate pair (tertiary) is the 

 longest, reaches almost to the cesophagus, and carries 

 mesenterial filaments and acontia. The 2 other pairs are 

 much shorter and carry the reproductive organs, which 

 are so perfectly filled with ova in various stages of 

 development that they quite close the chambers. On these 

 quaternar; septa the muscles are not much developed, 

 which is the contrary of the case with those of the tertiary 

 septa, where the longitudinal muscles lie like thick frutici 

 on the inner surface, whilst the transversal muscles form 

 a folded membrane on the outer surface. 



Habitat. 



Station No. 2. One specimen. 

 — ,. 261. Two specimens. 



Hertwig has relegated the genus Bunodidæ to the 

 family of the Sagartidæ, and has. in particular, described 

 an Actinia, under the designation Bunodes minuta. found on 

 the „Challenger"-Expedition ', but he. it is true, prefixes 

 a mark of interrogation as to whether it really can be 

 relegated to it or not. because, according to Gosse, the 

 genus Bunodides has no acontia, although he states that 

 on one occasion he found them in Bunodes coronata. 

 Hertwig thinks that the acontia may, in the generality of 

 cases, have been overlooked in the genus Bunodes. but 

 should that be a mistaken opinion he considers it neces- 

 sary to form a new genus, both for Bunodes minuta as 

 well as for Bunodes coronata. 



The Bunodes abyssorum described by me. above, not 

 only has acontia. but its circular muscles are also endo- 

 dermal, whilst. also, it has 12 pairs of perfect septa: it 

 can therefore. according to Hertwig's System, not be releg- 

 ated to the Sagartidæ, and it, consequently, appeared to 

 me most correct to retain the family Bunodidæ, Gosse, and 

 permit it. for the present, to belong to that family, as in 

 its externals it presents several characteristics which are 

 stated by Gosse to be essential for the family and genus. 



Specific characteristics. 



The pedal disc round; on its wrinkled under-surface 

 an infundibuliform depression. in whose vortex there is 



1 Voyage of H. M. S. Challenger. Zoologi. Vol. VI. Report 

 on the Åctiuaria dredged by H. M. S. Challenger, by Professor 

 Richard Hertwig. pag. 84. 



Den norske N ordhavsexpedition. D. C. Danielssen: Actinida. 



1 Voyage of H. M. S. ,. Challenger". Zoolugy. Vol. VI. 

 Report on the Actinaria dredged by H. M. S. „Challenger K , by Pro- 

 fessor Richard Hertwig, pag. 84. 



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