ker, der ere forskjellige baade 1 Antal og Form, alt efter- 
som Individet er ældre eller yngre, — ligesom de paa 
gamle, store Exemplarer ere forstørstedelen sammenvoxede, 
saa at de der virkelig danne en sammenhængende Kalk- 
plade, der er gjennemboret af 14—16 Huller". Talminde- 
lighed udgjør Kalkstykkerne fra 16—24 og ere ordnede 
saaledes, at de største, der ere dels trekantede, dels fir- 
kantede, ligge i Midten og danne en ujævn Længderække; 
til disse Midtstykker slutte sig paa hver Side smalere 
Kalkstykker, der ikke slutte ganske tæt til hinanden, hvor- 
ved et Mellemrum eller en Aabning fremkommer, som tje- 
ner til Gjennemgang for Tentakelrør. 
Af denne Sostjerne fandtes paa’ Expeditionen en stor 
Mengde saavel i den kolde som varme Area. Det er 
en ren arktisk Form og er tidligere ikke funden ved Nor- 
ges Kyst sydligere end ved Christiansund, og kun 1 meget 
smaa Exemplarer. I de arktiske Have opnaar den en 
overordentlig Størrelse, — saaledes var der enkelte Exem- 
plarer fra den kolde Area, der maalte mdtil 260”” 1 Dia- 
meter. Den lille Radius var 23””, den store 1307". De 
havde en smuk høirød Farve paa Rygsiden, og Paxillerne 
bare her altid en stærk Midtpig, saa at Rygfladen havde 
et pigget Udseende. 
Fra folgende Stationer haves Exemplarer: 
Station 9, mange Exemplarer; Svabberne vare saa 
overfyldte med denne smukke Sostjerne, at de havde Ud- 
seende af purpurrødt Fløiel, idet de kom op afSøen. Ex- 
emplarerne vare temmelig store. Stat. 10, ogsaa her i 
temmelig stor Mængde, sammen med Astrop. Andromeda. 
Stat. 18, hyppig, meget store Exempl. Stat. 23, et lidet 
Exempl. Stat. 25, et lidet Exempl. Stat. 26, enkelte 
Stat. 33, 
mange store Exempl. 
Stat. 87, store Exempl. 
Stat. 101, 
smaa Exempl. Stat. 31, nogle store Exempl. 
mange store Exempl. Stat. 54, 
Stat. 79, enkelte smaa Exempl. 
Stat. 
flere 
92, mange, men meget smaa Exempl. 
smaa Exempl. Stat. 124, mange, store Exempl. 
Stat. 147, meget smaa Hxempl. Stat. 149, smaa Exempl. 
Stat. 164, to overordentlig store Exemplarer. Stat. 176, 
to, store Exempl. Stat. 223, et overordentlig stort Exem- 
plar. Stat. 224, to Kjæmpeexemplarer. Stat. 225, store 
Exempl. Stat. 248, nogle store Exempl. Stat. 251, flere 
smaa Exempl. Stat. 255, 2 smaa Exempl. Stat. 260, 
2 store Exempl. Stat. 262, nogle Exemplarer i Middel- 
Stat. 273, ligesaa. Stat. 275, ligesaa. Stat. 
283, meget almindelig, temmelig store Exemplarer. Stat. 
290, et stort Hxemplar. Station 312, uhyre Mængder, 
store Exemplarer. Station 323, mange, Middelsexempla- 
storrelse. 
bo 
DD 
4 Se Nil» 8, nent, 
B., 3die Hefte. 
a, a, i Nyt Magazin for Naturvidensk. 
seen upon closer examination, to consist of small calcar- 
eous pieces, varying, both in form and number, according 
as the individual specimen is old or young. In old large 
specimens the calcareous pieces have, most of them, be- 
come adherent to each other, so that they really form one 
compact calcareous plate, which is pierced by 14—16 per- 
forations’. Usually, the calcareous pieces are 16 to 24 
in number; and are arranged in such manner, that the lar- 
gest, which are partly, trilateral, and partly, quadrilateral 
in shape, are placed in the middle, and form an irregular 
longitudinal row. To the lateral margins of these mesial 
pieces, narrower calcareous pieces which do not quite close 
upon each other, unite, producing an interspace or leay- 
ing an aperture, serving for the passage of tentacular tubes. 
A large number of specimens of this starfish was 
found during the expedition, both in the cold, as well as, 
in the temperate area. It is a pure arctic form, and has 
not, previously, been found on the Norwegian coast further 
south than Christiansund, and then, only, m the shape of 
very small specimens. Inthe Arctic seas, it reaches to an 
immense size, and some specimens from the cold area, at- 
tained as much as 260”” in diameter. The disk radius 
was 23”" and the brachial radius 1307", There colour 
was a beautiful scarlet on the abactinal surface; and the 
paxille im that situation, always carry a strong mesial 
spine, so that the abactinal surface obtains a spinous ap- 
pearance. 
Specimens were obtained at the following stations: 
Station No. 9. Many specimens. The hempen-tangles were 
so completely filled with this beautiful 
starfish, that as they came out of the sea, 
they had the appearance of reddish purple 
flannel. The specimens were pretty large. 
— » 10. Also, here, in rather large quantities, in 
conjunction with Astropecten Andromeda. 
— » 18. Frequent, very large specimens. 
oe , 23. Å small specimen. 
— , 25. Å small specimen. 
= » 26. A few small specimens. 
— s 31. Some large specimens. 
— 7, 833. Many large specimens. 
= , 54. Many large specimens. 
-— » 79. Å few small specimens. 
— » 87. Large specimens. 
— » 92. Many, but very small specimens. 
— » 101. Several small specimens. 
— » 124. Many large specimens. 
= , 137. Large specimens. 
oo » 147. Very small specimens. 
— » 149. Small specimens. 
— » 164. Two extremely large specimens. 
— » 176. Two large specimens. 
— , 223. An extremely large specimen. 
4 Mide PL 3, mie Ty Gy 6 
23 B. 3die Hefte. 
in Nyt Magazin for Naturvidensk. 
