JAPANESE ASTEROIDEA. 69 



" Localities. — ' Porcupine ' Expedition : 



" Station 82. In tlie Faeröe Channel. Lat. 60° 0' 0" N., long. 5° 13' 

 0" W. Deptli 312 fathoms. Bottom temperature 5°.2 C; sm-faco temperature 

 1F.2 C. 



"Station 57.'> In the Faeröe Channel. Lat. 60° 14' 0" N., long. 6° 

 17' 0" W. Depth 632 fathoms. Bottom temperatm'o -0°.8 C. ; sm-face tempera- 



tm-e ir.l C. 



" Station 58.^^ In the Faeröe Channel. Lat. 60° 21' 0" N., long. 6° 

 51' 0" W. Depth 540 fathoms. Bottom temperatm-o -0°.6 C. ; siu-face tem- 

 peratm'e 10°.6 C. 



" Other Localities. — This species also occurs off the coast of Greenland, 

 off the eastern coast of North America, off the Scandinavian coast, off 

 Spitzbergen and Nova Zembla, and in the Barents Sea. 



" Ctenodiscus corniculatus has been found in the fossil state by the late 

 M. Sars ['61, p. 144] in the older beds of the Postpliocene or Glacial 

 formation of Norway, near Christiania." 



In the same report is described and figured Ctenodiscus procurator as a 

 new species, but it appears to be sx^ecifically identical with Ct. crispatus 

 ['89, p. 173] : 



"Ctenodiscus procurator, n. sp. (PL XXX. figs. 7-12). 



"Tliis form has so many points of close resemblance to the North- 

 Atlantic Ctenodiscus corniculatus that examples might be selected wliich at 

 first sight would easily be mistaken for that species. A number of small 

 differences, however, loresent themselves when a large series is examined, 

 wliich appear sufficiently constant to warrant the recognition of this form as a 

 distinct species. Under these circumstances the description of Ctenodiscus 

 procurator wiU probably be most intelhgible if it takes the form of a 

 •comparative review of the characters of this species in relation to those of 

 the two previously known species of Ctenodiscus, viz., Ctenodiscus corniculatus 

 of the North Atlantic, and Ctenodiscus caistralis, Lütkex, from the East of 

 Patagonia. 



, 1) " This occurrence is recorded in Sir Wtvillb Thomson's Depths of the Sea, but I have 

 not seen a specimen." 



