160 



Tab. XIV. Fig. 47. 



48. 



49. 



listeformige Fremspring, der strax 

 gaar over til venstre Side. 



Tversnit endnu længere nede paa 

 Polvpen. hvilket viser begge Frem- 

 springene i deres største Fdbredning, 

 forstørret, a, Fremspringet fra høire 

 Væg, der rager over Svælgrenden til 

 venstre Væg; b, Fremspringet fra 

 venstre Væg, der naar over til høire 

 Væg. 



Tversnit endnu længere nede paa 

 Polvpen. hvor kun den nederste, lave 

 Del af Fremspringet fra høire Væg 

 sees, medens det fra venstre Væg 

 har sin fulde Høide, forstørret, a, 

 den lave, nederste Ende af høire 

 Fremspring; b, venstre Fremspring 

 i sin fulde Høide. 



Tversnit fra Svælgets nederste Ende, 

 paa hvilket der endnu sees en liden 

 Rand af Fremspringet paa venstre 

 Væg, imedens det paa høire Væg er 

 ganske forsvundet. «, Rest af venstre 

 Fremspring. 



Tab. XV. Gersemiopsis arctica. 



Fig. 1 — 3. Koller fra Polypens Bagkrop, for- 

 størret. 



— 4. 5. Takkede Spindler fra samme, for- 



størret. 



— 6. 7. Bladede Klubber fra samme, for- 



størret. 

 — . 8. Stor, bladet Kolle fra Polypens Forkrop. 



— 9. 1U. Takkede Klubber fra samme, for- 



størret. 



— 11. 12. Forskjelligtformede Spikler, dels 



fra Polypens Forkrop, dels fra Ten- 

 taklerne, forstørret. 



— 13. En sehematisk Fremstilling af Svælget 



med dets to Fremspring. Svælget 

 tænkes aabnet langs Svælgrenden og 

 slaaet til Side, saa at Hulheden 

 træder frem. a, -den overste, hoie 

 Del af høire Fremspring; b. den 

 nederste, lave Del af samme; c, den 

 øverste, lave Del af venstre Frem- 

 spring; d, den nederste, hoie Del af 

 samme. 



iillet-formed protuberance which 

 immediately passes over to the sini- 

 stral side. 

 Pl. XIV. Fig. 47. Transversal section still further down 

 the polyp. showing both protuber- 

 ances in their greatest extent; magni- 

 fied. a. The protuberance from the 

 dextral wall, which projects across 

 the gullet-passage to the sinistral 

 wall. b. Tlie protuberance from the 

 sinistral wall, which reaches across 

 to the dextral wall. 



— 48. Transversal section still lower down 



the polyp, where only the inferior 

 low part of the protuberance from 

 the dextral wall is seen, whilst that 

 from the sinistral wall retains its 

 full height; magnified. a. The low 

 inferior part of the dextral protuber- 

 ance. fr. The sinistral protuberance 

 in its full height. 



— 49. Transversal section from the lowest 



extivmity of the gullet, on which 

 there is still seen a small margin 

 of the protuberance on the sinistral 

 wall. whilst that on the dextral wall 

 has quite disappeared, a. Remain- 

 ing part of the sinistral protub- 

 erance. 

 Pl. XV. (hjrsr)ii/npsis aritii-a. 



Kigs. 1 — 3. Subelavates of the posterior body 

 of Gersemiopsis arctica; magnified. 



— 4. 5. Spicate fusees of same: magnified. 



— G. 7. Foliated clavates of same: magnified. 



— 8. Large foliated subclavate of the anter- 



ior body of the polyp. 



— 9. 10. Spicate clavates of same; magni- 



fied. 



— 11. 12. Variously formed spicules, partly 



from the anteribr body of the polyp 

 and partly from the tentacles; mag- 

 nified. 



— 13. A diagramatic representation of the 



gullet with its two protuberances. 

 The gullet is supposed to be dis- 

 sected along the gullet-passage and 

 then folded back so that the cavity 

 is brought into view. a. The super- 

 ior high part of the dextral pro- 

 tuberance. b. The inferior low part 

 of the same. c. The superior low 

 part of the sinistral protuberance. 

 d. The inferior high part of the 

 same. 



