142 Proceedings of the Royal Physical Society. 



Other Localities. — Norway, 60-300 fathoms (Lyman) 

 Hardanger and Christiania Fjords, 50-180 fathoms (Norman) 

 North-East America, 120-487 fathoms (Verrill). 



Ophiacantha. 



Ophiacantha ahyssicola, Sars. 



1871. Ophiacantha ahyssicola, Sars, Nye Echin., p. 8. 



1882. ,, ,, Lyman, Zool. Chall. Exp., pt. xiv., p. 199. 



1884. „ ,, Hoyle, Proc. Eoy. Soc, Edinb., June 16. 



Habitat. British Seas.— The Faroe Channel, 203-458 

 fathoms (''Porcupine" Expedition). 



Other Localities. — Bodo, 80-100 fathoms; Lofoten Islands, 

 120-300 fathoms (Sars). 



Ophiacantha hidentata, Ljn. (Eetz.). 



1805. Asterias hidentata, Eetz., Diss., p, 33. 



1817. Ophiura Retzii, Nilsson, Collectanea Zoologise Scandinavise, p. 15. 



1842. Ophiacantha spinulosa, Miill. and Tr., Syst. d. Aster., p. 107. 



1842. Ophiocoma arctica, Id., Ihid., p. 103. 



1844. Ophiacantha gronlandica, Id., Archiv f. Naturgescli., p. 183. 



1852. Ophiocoma echinulata, Forbes, Sutherland's Journ. Yoy. Baffin's Bay, 



vol. ii., p. ccxv. (App.). 

 1858. Ophiacantha spinulosa, Ltk., Addit. ad. Hist., pt. i., p. 65, pi. ii., 



fig. 14. 

 1861. ,, ,, Sars, Oversigt Norges Ecbin., p. 13. 



1865. ,, ,, Lyman, 111. Cat. Mus. Comp, Zool., No. i., p. 



93, figs. 6, 7. 

 1871. ,, hidentata, Ljn., Ofversigt K. Akad. Vetensk., p. 652. 



1877. ,, spinulosa, Marenzeller, Denkschr. d. k. Akad. Wiss. 



Wien, Bd. xxxv., p. 282. 



1881. ,, „ Duncan and Sladen, Mem. Echin. West 



Greenl., p. 68. 



1882. ,, hidentata, Lyman, Zool. Chall. Exp., pt. xiv., p. 186. 

 1882. ,, ,, Id., Proc. Roy. Soc, Edinb., vol. xi., p. 707. 



1882. ,, spinulosa, Hoffmann, Niederland. Archiv f, Zool., Suppl.- 



Bd. i.. Lief. 3, Echin., p. 3. 



1883. „ ,, Lyman, Bull. Mus. Comp. Zool,, vol. x.. No. 



6, p. 260. 



1884. ,, hidentata, Hoyle, Proc. Roy. Soc, Edinb., June 16. 



Habitat. British Seas. — This species has been obtained in 

 both areas of the Faroe Channel at depths varying from 203 

 to 515 fathoms (Lyman, Hoyle). 



Other Localities. — Three " Challenger " and eight " Blake " 



