Report on the Echinoderms of North-East Greenland. 363 



the possibility of the American species being distinct from tlie Arc- 

 tic form. — As pointed out by Grieg (Op. cit. p. 69), S. glacialis 

 seems to be a more arctic species than endeca. It is well worth 

 noticing in this connection that the specimens from West Green- 

 land, preserved in the Copenhagen Museum, prove to belong exclu- 

 sively to the true S. endeca. Likewise all the specimens in hand 

 from Iceland belong to this species, while, on the other hand, the 

 true S. endeca is not known to occur at East Greenland. These 

 facts, together with those mentioned by Grieg, decidedly point 

 towards the conclusion that S. glacialis is a true arctic species, not 

 descending into the boreal region, while S. endeca is a boreal form, 

 proceeding far northwards along the Norwegian Coast to Spitz- 

 bergen, and in the Davis Strait along West Greenland. — This 

 distribution of the two species is decidedly not in favour of the 

 supposition that S. glacialis and syrtensis are really identical. 



Grieg suggests that the large specimen from the Kara Sea 

 mentioned by Levinsen under Solasier endeca may prove to be 

 glacialis. Having reexamined the specimen, I can state that Grieg's 

 suggestion is correct, and I may add that also the small specimens 

 mentioned there belong likewise to S. glacialis. 



11. Solaster papposus (L.). 



Solaster papposus Lût к en. 1857. Grønlands Echinod. p. 40. 



— — Sars. 186L Norges Echinodermer. p. 76. 

 Crossaster — Duncan & Sladen. 188L Mem. Echinod. Arct. 



Sea. p. 36. PI. III. Figs. 1—4. 

 Solaster — Danielssen & Ко ren. 1884. Norske Nordh. Exp. 

 Asteroidea. p. 48. PI. IX. Fig. 12. 



— — Fischer. 1886. Echinodermen. Oesterreichischen 



Polarstation Jan Mayen. III. p. 33. 



— — Döderlein. 1900. "Olga"- Echinodermen. p. 205. 



Taf. VI. Figs. 1—5. 

 Crossaster — Ludwig. 1900. Arktische Seesterne. Fauna Arc- 

 tica. p. 460. 



— — Rankin. 1901. Echinoderms .... West Green- 



land, p. 174. 

 Solaster — Th. Mortensen. 1903. Echinoderms from East 



Greenland, p. 75. PI. II. Fig. 6. 

 Crossaster — Michailovskij. 1903. Echinod. Russ. Exped. 



Spitzbergen, p. 25, 69. 

 Solaster — Grieg. "Michael Sars" Asteroidea. p. 46. Tab. I. 



Figs. 6-8. 



