19 



deflexa i Floridan Bi-yozoa, og jeg maa antage, at det 

 virkelig er denne art, som har foreligget. Enhver, som 

 har beskjæftiget sig noget med cyclostomate polyzoer, ved 

 hvilke store vanskeligheder ofte er forbundet med at iden- 

 titicerc dem, og man tør neppe stole sikkert paa, at den 

 arktiske fauna omfatter baaile enialophora deflexa og clavata 

 samt desiulen stomaiopora deflexa. Couch. 



Det, som især synes at karakterisere entalophoni de- 

 flexa, er den betydelige længde af zoociernes frie del, jeg 

 iiar nemlig fundet den af være 0.84 — O.Ofi mm., stundom 

 endog 1 .2 mm. Længden er nemlig ogsaa underkastet be- 

 tydelig variation. Zoociernes tykkelse i den frie del fandtes 

 at variere niellem U i4 — tJ.is mm. 



Oocier har jeg ikke fundet, men Smitt har tegnet dem 

 som en opsvujmning under bifurcationen. 



ings of Eiifalophura deflexa in Floridan Bryozoa; and I 

 may assunie that it really is this species that I have had 

 before me. Any one who has had anything to do with 

 cyclostomatous polyzoans, knows the great difticulties that 

 are frequently conuected with tlieir identitication ; and one 

 dåre hardly be sure that the arctic fauna includes both 

 Entalophora deflexa and clarala, as weil as Stomatopora 

 deflexa. Couch. 



That which seems especially to characteiise Enta- 

 j lophora deflexa, is the considerable length of the free por- 

 tion of tiie zoæcia. T have found it to be 0.84 — (J.Oii mm., 

 soraetimes as much as 1.2 mm. The length. too, is subject 

 to considerable variation. Tiie thickness of the zoæcia in 

 their iVeo part was found to vary between 0.14 and O.ls nim. 



I have not found any oæcia, but Smitt has drawn 

 them as a swellina; below the bifurcation. 



Gen. Reticulipora. 

 Reticulipora intricaria, Smitt. 



Tab. I, fig. 12. 



Retkidipora intricaria, Smitt (24, V), p. 1117, tab. 20, 



fig. 1 — 3. 

 Diastopura intricaria, Levinsen (1.5), p. 21. 

 Eetiailipora intricaria, Nordgaard (18, II), p. 5. 



Findesteder. St 48. 290, 315. 



Af de her opforte Stationer ligger 48 i ost for Island, 

 290 og 315 raellem Norge og Spitsbergen. Paa dette strøg 

 er arten tågen engang for. nemlig af den svenske Spits- 

 bergexpedition (Smitt). Lindahl har tåget den i Baftins 

 Bay, og Dijmphnaexpeditionen i Karahavet (Levinsen). 

 Endelig har jeg fundet den ved Sværholt i Finmarken. 



Smitt (1. c.) har tydelig fremhævet slægtskabet med 

 diastopora specielt oheJia ved tilstedeværelsen af smaarør, 

 tilslutning af de ældre zoocier ved en kalklamel, o. s. v. 

 Denne kalklamel (operculura) er ogsaa her perforeret. De 

 kolonier jeg havde til undersøgelse. afgav nok et vidnesbyrd 

 om nært slægtskab med diastopora, idet der i grenenes 

 kant forekom et listeagtigt fremspring svarende til basal- 

 skivens udvidelse hos diastopora (the marginal extension of 

 the basal lamina). 



Længden af den frie del af zoocierne ved 0.4 — 0.(i mm. 

 og tykkelsen ca. 0.12 mm. 



Gen. Reticulipora. 

 Reticulipora intricaria. Smitt 



Pl. I, fig. 1-2. 



Beticulipora intricaria. Smitt (24, V), p, 1117; Pl. XX^ 



figs. 1 — 3. 

 Diadopora intricaria, Levinsen (15), p. 21. 

 Reticulipora intricaria, Nordgaai"d (18, II), p. 5. 



Occurrence. St. 48. 290, 315. 



Of the above-mentioned stations, 48 lies east. of Ice- 

 land, and 290 and 315 between Norway and Spitsbergen. 

 The species has been tåken once before in this district, 

 namely. by the" Swedish Spitsbergen Expedition (Smitt). 

 Lindahl lias found it in Bafiin's Bay, and the Dijmphna 

 Expedition in the Kara Sea (Levinsen). Lastly, I have 

 found it at Sværholt in Finmark. 



Smitt (1. c) has clearly pointed out the relationship 

 to Diastopora, especially oljelia, in the prescnce of small 

 tubes, the closing of the older zoæcia by a calcareous lamella, 

 ete. This calcareous lamella (operculum) is perforated 

 here too. The colonies I examined possessed yet another 

 proof of tlieir near relationship to Diastopora, in the oc- 

 currence 01 a fillet-like projection at the edge of the bran- 

 ches, corresponding to the extension of the basal lamina 

 in Diastopora. 



The length of the free portion of the zoæcia was 

 from 0.4 to 0.0 mm., and its thickness about 0.12. 



