70 



indistinct in many specimens of groenlandica, as because it is a 

 relative thing, what is here to be understood by a circle of spines. 

 The madreporite may always be said to be encircled by spines 

 in species, where the disc has a dense covering of spines. 



The «forcipiform» pedicellariæ (PI. II. Fig. 2) are quite iden- 

 tical in both species, as Danielssen & Koren (Op. cit. p. 22) 

 have pointed out. But as several other species (f. i. Ä. rubens, 

 polaris, glacialis) have just the same form of pedicellariæ, that 

 proves nothing against their being two distinct species. In the 

 «forflciform» pedicellariæ Danielssen & Koren find this diffe- 

 rence between the two species that in A. groenlandica they 

 form small tufts along the ambulacral groove, whereas in A. 

 Millleri they are disposed singly. This character does neither 

 hold good : also in A. groenlandica they are often singly arranged. 



Though a typical A. groenlandica as to habitus differs very 

 much from a typical ^-ä. Ж/Шт, especially of the var. islandica 

 Levinsen, there is evidently not a single character to be rehed 

 upon by which they may be distinguished; I think, we must 

 then conclude that they cannot be maintained as two distinct 

 species, the form groenlandica must be regarded as a, more 

 or less distinct, variety of A. Millleri. 



4. Asterias panopla Stuxb. (PI. И. Fig. 1.) 



Danielssen <fe Koren: Op. cit. p. 17. — Levinsen: Op. cit. p. 394. — 

 D Ö d e r 1 e i n : Op. cit. p. 204. — Ludwig: Op. cit. p. 486. 



Off Henry Land, 200 — 100 fathoms. 1 specimen, medium-sized. 



The disc and abactinal side of the arms almost without 

 spines, only a few, inconspicuous spines, hardly larger than 

 the pedicellariæ are found at the basis of the arms. On the 

 disc Only forcipiform pedicellariæ are found, the forficiform ones 

 being found only along the ambulacral groove and very sparingly. 

 D an ielssen& Koren have figured the forcipiform pedicellariæ, 

 but it is not distinctly seen, that they differ in a more marked 

 manner from those of other ^s^mas- species. So they do 

 indeed, the more remarkably as the forcipiform pedicellariæ are 



