Atliecata. 



Fain. Corynidae. 



Hl/dra ntJi S2}in(M- eller æf/fo)inii/ med spredt sfillede 

 Tentakler. Invraf altid my/h' haJh-fonnede. 



Denne Familie findes ikke rejiresenteret i Nordliavs- 

 expeditionens Materiale; men jeg liidsætter dog, for Fuld- 

 stændigheds Skyld en Tabel over Familiens norske Arter. 

 De fleste tilhører slægten Cori/ne, og ))]andt disse er der 

 en. C. fiigantea, der har en afviuende Form, og som i sin 

 Bygning peger lieu mod Fani. Myriothelidae. Dens Hy- 

 dranth er uforholdsmiessig stor, og Pcrisarcen er hinde- 

 agtig tynd, samtidig med at Hydrorhiza har en pladeformig 

 Udbredelse. Alle disse Afvigelser fra det almindelige For- 

 hold hos Corynidae, saavel som dens solitære Opti-æden, tyder 

 paa en Udvikling i Retning mod Mijriothela, men spranget 

 er endnu for stort til at man kan regne de to Slægter til 

 samme Familie. 



Slægten Peiuuiria *) har i den norske Fauna kun en 

 Representant, nemlig P. (Acaulis) prlmari/is. 



Atliecata, 



*) Om denne Slægts Begrændsning og Stilling i Systemet, se 

 ovenfor Side 0. 



Fam. Corynidae. 



Hydrantli siiindle-sJiaped or ovifonii. icitli scattered 

 tentacles, aJways ^:oiiie of tltem cnp/tnte. 



This family is not represented in the coUeotion from 

 the N. Atlan. Exp. ; but for the sake of completeness, I 

 append a table of the Norwegian species of the family. 

 Most of them belong to the genus Coryne, and among 

 these there is one, C. yiyantea. which has a different form, 

 and which, in its structure, jjoints to the family Myriotlie- 

 Jidæ. Its hydranth is disproportionately large, and the 

 perisarc is membranous, whik' the hydrorhiza has a lamel- 

 liform expansion. All these differences from the ordinary 

 conditions in Corynidæ, combined with its solitary occur- 

 rence, seem to imply a development in the directiou of 

 Myriothela, but tlie gaj) is still too wide to allow of the 

 two genera being classed in the same family. 



The genus Pe)uiaria*) has only one representative in 

 the Norwegian fauna, namely. P. (Acaulis) pr/iiinrins. 



*) Conserning the limits of this genus, and its position in the 

 system, see p. ti. 



