24 



JAMES A. GRIEG 



[REP. OF THE ".MICHAEL SARS" NORTH 



sudlichen Teilen" seems to be founded in mistake. As 

 far as I know, Luidia ciliaris, is never collected off the 

 Norwegian coast. But there is a specimen in the Riks- 

 museum in Stockholm that is recorded as taken off Bohus- 

 lan (cfr. Diiben & Koren 1 ), which is the more remarkable 

 as Luidia ciliaris is not found in the eastern part of the 

 North Sea, the Skagerak or the Kattegat. I am most 

 inclined to think that Professor Loven obtained the 

 specimen from fishermen from Bohuslan, who had brought 

 it from the fishingbanks of the north-western part of the 

 North Sea. 



Helland Hansen mention in "Farvandenes hydrogra- 

 fiske forholde" 2 ) that some of the salty and rather warm 

 water of the Atlantic passes into the North Sea through 

 the channels between Scotland and Norway. It then 

 flows southward along the coasts of Scotland and Eng- 

 land, until it turns eastward across the North Sea immedi- 

 ately north of the Doggerbank. If we mark on a chart 

 the localities in the North Sea, where Luidia ciliaris was 

 obtained, we shall find that its distribution comes within 

 the bounds of this Atlantic current and that the southern 

 limit of the species is where the current turns eastward. 

 Its southernmost locality of the east coast of England, 

 Scaborough being abreast of the Doggerbank. Luidia 

 ciliaris must therefore have migrated from north into the 

 North Sea. Some water from the Atlantic also flows 

 through the English Channel into the North Sea, but 

 Luidia ciliaris can not have come that way, as it is not 

 found in the southwestern part of the North Sea and, 

 in the English Channel, not east of Plymouth. 



The bathymetrical distribution is 4—220 m. 



Luidia sarsii Dtibcn & Koren. 



Luidia sarsii Diiben & Koren, 0fvs. Kgl Vet. Akad. Forhandl., vol. 1. 



1844 (1845), p. 113. 



8 /e, stat. 53, 34= 59' N. 33° 1' W., 1 m. net, 100 m. wire. A very 

 young fully transformed specimen. 



1 . stat. 56, 36" 53' X. 29 T 47' W., 1 m. net, 100 m. wire. One 



specimen with adhering remnants from larval stage. Diameter 4.5 mm. 



, stat. 64, 34- 44' N. 47° 52' W., 1 m. net, 200 m. wire and 



youngfish trawl, 300 m. wire. From either gear one specimen with 



adhering remnants from larval stage. Diameter 3 mm. 



: -, stat. 98, 56°33'N. 9° 30' W., 1 m. net, 200 m. wire. One 

 specimen with adhering remnants from larval stage. Diameter 4 mm. 



6 /s— 7 /s, stat. 101, 57"- 41' N. 11° 48' W., 1 m. net, 200 m. wire. 

 6 specimen with adhering remnants from larval stage. Diameter 3 

 — 1.2 mm. 



9 /s— '%, stat. 102, 60°57'N. 4'38'W., Vim. net, 400 m. wire. 

 Two very young, fully transformed specimens. Diameter 5 mm. and 

 6 mm., disc-radius 0.7 mm. and 1 mm., arm-radius 3 mm. and 3.2 mm. 



Luidia sp. 



26 /e, stat. 67, 40° 17' N. 50° 39' W„ 1 m. net, 50 m. wire. One 

 specimen with adhering remnants from larval stage. Diameter 3.5 mm. 



The larva, which was not very veil preserved, could 

 not be definetely determined, but as stat. 67 is situated south 

 of Newfoundland, it seems reasonable to assume that it 

 belongs to one of the species of Luidia common along 

 the eastcoast of North America, Luidia clathrata Say or 

 L. elegans Ed. Perrier. 



Stichaster roseus O. F. Miiller. 

 Asterias losea O. F. Miiller, Zool. Dan. Prod., 1776, p. 234. 



'%, stat. 3, 49° 32' N. 10° 49' W., 184 m., fine sand, temp. 10.3 

 Cel. One specimen. 



Stichaster roseus is an east Atlantic boreal species 

 that ranges northward to the banks of Tromsoe (the 

 "Voeringen" stat. 173, 69° 18' N. 14°32'E., 549 m.). It 

 ranges south to the Bay of Biscay (45° 18' N.), where it was 

 obtained by the "Caudan" as well as by the "Princesse 

 Alice". The "Caudan" found it to be numerous at depths 

 from 100 to 180 m. The bathymetrical distribution of 

 the species is from 4 to 1232 m., but the typical form 

 does not descend to below some 500 m. 



Zoroaster fulgens Wyville Thomson. 

 Zomster fulgens Wyville Thomson, Depths of the Sea, 1873, p. 154. 



e k— 7 /», stat. 24, 35° 34' N. 7° 35' W., 1615 m., yellow mud, temp. 

 8° Cel. Two smaller specimens. 



23 /», stat. 41, 28° 8' N. 13° 35' W., 1365 m., yellow mud, temp. 

 6° Cel. 10 specimens. 



3 %, stat. 70, 42°59'N. 51° 15' W., 1100 m., temp. 3.7 Cel. One 

 specimen. 



9 /7, stat. 75, 47° 22' N. 49° 16' W., 120 m. One specimen. 



6 /s— Vs, stat. 101, 57°41'N. 11°48'W., 1853 m., hard clay, temp. 

 3.3° Cel. 8 specimens. 



Vs— 10 /s, stat. 102, 60°57'N. 4°38'W., 1098 m., dark sand and 

 clay, temp. -+- 0.9° Cel. One very defectivs and macerated specimen, 

 which had probably remained in the trawl from stat. 101. 



The smallest specimen measured: Arm-radius 26.5 ram, 

 disc-radius 6.5 mm., breadth of arm at base 8 mm., 

 r : R = 1 : 4.os, A : R = 1 : 3.31. The remaining spec- 

 imens measured: arm-radius 66— 162 mm., disc-radius 6.5 

 — 15 mm., breadth of arm at base 8 — 13 mm., r:R varied 

 between 1 : 6.6 and 1 : 12.36, A : R varied between 1 : 6.5 

 and 1 : 13.6. In some specimens taken by the "Michael 

 Sars" in 1902 r:R varied between 1:6.4 and 1:11.5 

 and A : R between 1 : 6.5 and 1 : 10.5. In others mentioned 

 by Sladen 1 ) these figures were 1 : 6.87 — 1 : 10 and 1 : 7.86 

 — 1 : 9.89 respectively. From the foregoing we may infer 



') Kgl. Vetensk. Akad. Handl., 1844 (1846), p. 254. 



-) Hjort: Norges Fiskerier I Norsk Havfiske, 1905, p. 19. 



') Bell: Cat. British Echinoderms, 1892, p. 88. 



