72 



Fig. 4. Et Stykke af den ydre Ryghud seet fra den indre Flade; 

 a Paxillernes Skaft; b deres Krone; c Respirationsrør. 



Fig. 5. To Paxiller, stærkere forstørrede; c Skaft; d Krone med 

 de secundære Naale; e forbindende Membran; f centrale 

 Naale. 



Fig. 6. Madreporpladen, seet i Profil; a kalkagtige Fortsatser ved 

 Basis. 



Fig. 7. Samme stærkere forstørret, seet ovenfra. 



Fig* 8* Respirationsrør; a Basis ; b Endedel. 



Fig. 9. En Del af en Siraale, seet fra Bugsideu; a a ydre Rader 

 af Sugefødder; b indre Rader af Sugefødder; c afvexlende 

 længere Tværfinner; d afvexlende kortere Tværfinner; e 

 den foldede Ryghud. 



Éig. 10 — 13. Tværfinner; a Adambulacralplader, hvortil Finnerne 

 ere fæstede; b Bugens Integument; c Finnernes Pigge; d 

 den forbindende Membrans Endelober; e Sugefødder; f 

 Randpigge» 



Fig. 14. Den adorale Del af Ambulacralskelettet, seet fra Bugsiden; 

 b den mediane Rende i Bugfuren for Ambulacralkarret; d 

 Ambulacralporer; g Tværfinnernes Pigge; h ydre (margi- 

 nale) Pigge; mm vifteformige Finner dannende Mundvink- 

 lerne; n nedre Pigge paa samme; o adorale Pigge. 



Fig. 15. En Del af en Straales Ambulacralskelet, seet fra Bugsiden; 

 a a Ambulacralplader; & median Fure for Ambulacralkarret; 

 c afvexlende kortere og d afvexlende længere Ambulacral- 

 porer; e Adambulacralplader; f Tuberkler for Piggene i 

 Tværfinnerne; h Randpigge; i intermarginale Pigge.. 



Fig. 16. En Del af en Straales Ambulacralskelet med en Del af de 

 dorsale Integum enter, seet ovenfra; a ydre Ryghud; b in- 

 dre Ryghud; c, d Paxiller; e Randpigge; f interradiale 

 Plader; g den ydre Ende af Ambulacralpladerne; h den 

 indre ombøiede Ende af samme; * længere og h kortere 

 Ambulacralporer. 



Ambulacralplader isolerede og stærkere forstørrede ; g den 

 ydre Ende; h h indre Ender; * Ledflader. 



Fig. 17 

 Fig. 18 



Fig. 18 

 Fig. 19. 



En Del af Ambulacralskelettet hos Pter aster pulvillus, seet 

 fra Bugsiden; b median Rende i Bugfuren for Ambulacral- 

 karret; c Ambulacralporer; e Adambulacralplader; h Rand- 

 pigge; i intermarginale Pigge. 



,. En intermarginal Pig isoleret og stærkt forstørret. 

 Tværfinner hos Pteraster pulvillus; a indre, b ydre Ende. 

 d den forbindende Huds Endelober, 



Bogstaverne som i 



En Tværfinne hos Pteraster militaris. 

 foregaaende Figur. 



En Del af Ambulacralskelettet hos Pteraster militaris, seet 

 fra Bugsiden; Bogstaverne som i Fig. 18. 

 En Del af Ambulacralskelettet hos Asterias glacialis, seet 

 fra Bugsiden; b median Rende i Bugfuren; c c Ambula- 

 cralporer. 

 Fig. 23. Samme seet ovenfra; c c Ambulacralporer; g Ambulacral- 

 pladernes Sidedele; h indre Del af samme. 



Fig. 20. 

 Fig. 21. 

 Fig. 22. 



GONIASTER HISPIDUS, M. Sars. 



n. sp. 

 (Tab. 8, fig. 24—25). 



I Jenne Søstjerne, som hidtil kun er fundet i et eneste 



Exemplar ved Skraaven i Lofoten paa 200 — 300 F. D., 



antog jeg ved første Øiekast for at være en Art af Slæg- 



Fig. 4. 

 Fig. 5. 



Fig. 6. 



Fig. 7. 

 Fig. 8. 

 Fig. 9. 



Fig. 10- 



Fig. 14. 



Fig. 15. 



Fig. 16. 



Fig. 17. 

 Fig. 18. 



Fig. 18 a 

 Fig. 19. 



Fig. 20. 

 Fig. 21. 

 Fig. 22. 



Fig. 23. 



A piece of the outer cuticle from the inner surface- a 

 shaft and b crown of the paxillæ ; c respiratory pores. 

 Two paxillæ more strongly magnified; c shaft; d crown 

 with the secondary needles; e connecting membrane- f 

 central needles. 



The madreporic body seen in profil; a calcareous process 

 at the base. 



The same more strongly magnified seen from above. 

 Respiratory tentacles; a base; b extremity. 

 Part of a ray seen from the ventral side; aa outer rows 

 of water-feet; b inner rows of water-feet; c alternately 

 longer transverse fins; d alternately shorter transverse 

 fins; e folded ventral skin. 

 -13. Transverse fins ; a adambulacral plates, to which the 

 fins are affixed; b ventral integument; c spines of the 

 fin; d terminal lobes of the connecting membrane- e 

 water-foot ; f marginal spines. 



Adoral part of the ambulacral skeleton seen from the 

 ventral side ; b medial sulcus of the ventral furrow for 

 the ambulacral vessel; d ambulacral pores; g spines of 

 the transverse fins; h exterior (marginal) spines; mm 

 fanshaped fins forming the angles of the mouth; n inferior 

 spines of the same; o adoral spines. 

 Part of the ambulacral skeleton of a ray seen from the 

 ventral side; a a ambulacral plates; b medial groove for 

 the ambulacral vessel; c alternately shorter and d alter- 

 nately longer ambulacral pores; e adambulacral plate; 

 f tubercles for the spines of the transverse fins ; h mar- 

 ginal spines; * intermarginal spines. 



Part of the ambulacral skeleton of a ray with a portion 

 of the dorsal integuments seen from above; a exterior 

 dorsal cuticle; b interior dorsal cuticle; c d paxillæ; e 

 marginal spines; f interradial plates; g outer extremity 

 of the ambulacral plates; h inner recurved extremity 

 of the sames; i longer and k shorter ambulacral pores. 

 Ambulacral plates isolated and more strongly magnified; 

 g outer extremity; hh inner extremities; i articulating 

 surfaces. 



Part of the ambulacral skeleton of Pteraster pulvillus 

 seen from the ventral side; b medial sulcus of the ventral 

 furrow for the ambulacral vessel; c ambulacral pores; e 

 adambulacral plates: h marginal spines; i intermarginal 

 spines. 



Intermarginal spine* isolated and strongly magnified. 

 Transverse fins of Pteraster pulvillus; a interior, b ex- 

 terior extremity; d terminal lobes of the connecting 

 membrane. 



A transverse fin of Pteraster militaris. The letters as in 

 the preceding fig. 



Part of the ambulacral skeleton of Pteraster militaris seen 

 from the ventral side. The letters as in fig. 18. 

 Part of the ambulacral skeleton of Asterias glacialis seen 

 from the ventral side; b medial sulcus of the ventral 

 furrow; c c ambulacral pores. 



The same seen from above; c c ambulacral pores; g 

 lateral parts of the ambulacral plates; h interior part 

 of the same. 



GONIASTER HISPIDUS, M. Sabs. 



n. sp. 

 (Tab. 8, fig, 24-25.) 



I his star-fish, of which hitherto only a single specimen 



has been found at Skraaven in Lofoten at the depth 



of 200—300 fathoms, I considered at first glance to be 



■ 



