272 Th. MORTKNSIÎN. 



ridarum. I. K. D. Vid. Selsk. Skr. 5. R. V. p. 4(). 

 Tab. I. Fig. 7 a. b. 

 Ophioglypha robiista Lyman. 1865. Ophiuridæ and Astrophytidæ. 

 Illustr. Catalogue Mus. Comp. Zool. I. p. 45. 



— — Duncan & Sladen. 1881. Mem. Echinod. Arct. 



Sea. p. 62. PI. IV. Figs. 5-7. 



— — Fischer. 1886. Echinodermen. Oesterreich. 



Polarstat. Jan Mayen, p. 36. 

 Ophiura — Grieg. 1900. Ophiuriden d. Arktis. Fauna Arc- 



tica. p. 262. 

 Ophioglypha — Rankin. 1901. Echinoderms coll. off" the W^est 



Coast of Greenland, p. 176. 



— — 1903. Echinoderms from East Greenland, p. 83. 

 Ophiura — Michai lo vskij. 1903. Echinod. Russ. Exped. 



Spitzbergen, p. 31, 72. 



Ophioglypha — Clark. 1904. Echinoderms of the V^-^oods Hole Re- 

 gion, p. 558. PI. 6. Figs. 31- 32. PI. 7. Figs. 39-40. 



Ophiura — Grieg. 1907. Echinodermata. II. "Fram" Ex- 



pedition, p. 18. PI. I. Figs. 9— 10. 



Ophioglypha — Кое hier. 1909. Echinodermes. Monaco. XXXIV. 

 p. 154. 

 A great number of specimens of all sizes has been collected on 



the following stations: 20, 21, 25, 27, 53, 57, 60, 61, 63, 66-72, 95, 96. i 



In some of the larger specimens the space between each pair 

 of inner tentacle pores is more or less completely covered by small 

 papillæ (PI. XVI. Fig. 1). — In a specimen from Stat. 20, with the 

 mouth abnormally developed, I found one of the mouth-tentacles 

 dichotomously branched. 



On the ventral side of the disk of a specimen from Stat. 71 was 

 found a Halacarid; this occurrence probably is only accidental, 

 still one cannot ascertain that definitely, so I have thought it right 

 just to mention the case. 



17. Opliiocten sericeum (Forbes). 



Ophiocten Krøyeri Lût ken. 1857. Grønlands Echinod. p. 52. 



— — — 1858. Additam. ad hist. Ophiuridarum. 



I. p. 52. Tab. I. Fig. 5a-d. 



— — Lyman. 1865. Ophiuridæ and Astrophytidæ. p. 53. 



— sericeum Duncan & Sladen. 1881. Mem. Echinod. Arctic 



Sea. p. 65. PI. IV. Figs. 8—10, 14. 



— — Grieg. 1892. Grønlandske Ophiurider. Bergens 



Mus. Årbog. p. 8. 



' For the localities of the stations see the list p. 300. 



