JAPANESE A>STEEOIDEA. 



375 



" M. Saes omtaler i sin Over- 

 sigt over Norges Ecliinodermer en 

 A^arietet af Ärchastcr Farelii, som 

 naermer sig vor teminelig meget, men 

 som dog ikke i saa betydelig Grad, 

 som vor, afviger fra den typiske 

 Form. Saes's Varietet liar ikke saa 

 bred Skive og heller ikke saa lange 

 Arme, som vor, hvilket Forlioldet af 

 den Hlle og store Radius bedst 

 udviser (Saes's Exemi^lar var 1 

 Tomme storre end vorst storste). 

 Kandpladerne ere fsen-e i Antal, og 

 deres Breddeforhold til Paxillarfeltet 

 er naesten omvendt det paa vor va- 

 rietet. Fars'en er som paa den 

 typiske Art. 



" Unegtelig har man her for sig 

 en Form, der synes at ville arbeide 

 sig OX3 igjennem Tidernes L0b til en 

 selvstœndig Art, og for saa vidt har 

 den sin Interesse. Sars fandt 1 Ex- 

 emplar i Vestfinmarken (Oxfjord) 

 X^aa 100-150, senere fandt han den 

 igjen ved Christiansnnd paa Lerbund, 

 paa 40-70 Favne. 



" Vor Varietet fandtes paa den 

 norske Nordhavsexpedition -^s,s, fol- 

 gende Stationer : 



lOde Stat. 61° 40' N.B. 3° 20' 

 L. 0. f. Gr. 214 Favne. Temp. + 5.8 

 C. Lerbund blandet med Sand. 

 6-8 Exemj)larer sammen med Astro- 

 peden Andromeda og Archaster tenui- 

 spinvs. 



79de Stat. 64° 50 N. B. 6° 40' 

 L. 0. f. Gr. 151 Favne. Temp. + 6.9 

 C Lerholdig Sand med st0iTe 



M. Saes mentions in his Over- 

 sigt over Norges Ecliinodermer a 

 variety of Archaster Parelii, wliich 

 apx)roaches x>i'etty much to om: varie- 

 ty but does not, however, differ from 

 the tj'x^ical form in such a marked 

 degree as om-s does. Saes' variety 

 has not such a broad disk or such 

 long arms as ours, [a fact] which 

 the x)i'opoi'tion of the small and 

 great radius shows best (Saes' ex- 

 am]ple was 1 inch larger than our 

 largest). The marginal plates are 

 fewer in number, and the proportion 

 of their width to that of the paxillar 

 area is almost the reverse of what 

 it is in our variety. The colour is 

 as in the typical species. 



We have undoubtedly before us 

 a form which it ax)pears would evolve 

 in course of time into an indepen- 

 dent species, and it is in tliis tliat its 

 interest lies. Saes found 1 exam- 

 ple in West Finmark (Oxfjord) at 

 100-150, later he found it again at 

 Christiansimd on clay bottom at 40- 

 70 fathoms. 



Our variety was found in the 

 Norwegian North Sea Expedition in 

 the following stations : 



10th Stat. 61° 40' N. 3° 20' L. 

 E. fr. Gr. 214 fathoms. Temp. +5.8 

 C. Clay bottom mixed with sand. 

 6-8 examx)les together with Astro- 

 2)ecten Andrcmieda and Archister 

 tenuispinus. 



79th Stat. 64° 50' N. L. 6° 40' 

 L. E. fr. Gr. 151 fathoms. Temp. + 6.9 

 C. Clayey sand with larger 



