86 



24. Ophiacantha bidentata (Retz.). 



Ophiacantha spinulosa M. Tr. 



L ü t к e n : Additamenta. p. 65. — Duncan & Sladen: Op. cit. p. 68. — 

 Bell: Op. cit. p. 127. — Grieg: Oph. d. Arktis, p. 267. 



Numerous specimens from the following localities. 



Кар Brewster, 250 fathoms; Кар Tobin, 57,fath.; Кар Hope, 

 120fath.; Кар Dalton, 9— 11 fath. ; Forsblad Fjord, 90— 50fath.; 

 Hurry Inlet, 50 fath.; Off Henry Land, 20 fath.; Turner Sund, 

 120 F.; Ryders Sund, 3 fath.; Off Canning Island, 202 fath.; 

 Angmagsalik, 140 fath.; Jan Mayen, 50 — 60 fath. 



Several specimens have two tentacle scales at the inner 

 pair of pores, though mostly not on all the arms ; sometimes 

 two tentacle scales may be found farther out on a single arm. 

 One specimen from Forsblad Fjord is remarkable by having 

 3 — 4 extra mouthpapillae, outside the normal series; such groups 

 of papillae outside the true mouthpapillae distinguish 0. enopla 

 Verrill (and a few other species, 0. cosmica Lym., rosea Lym., 

 scutata Lym.). As, however, this specimen does not differ in any 

 other respect from the typical 0. bidentata^ it must be regarded 

 as an abnormal form of this otherwise very variable species. 



25. Ophiacantha anomala G. 0. Sars. 



G. 0. Sars; Nye Echinodermer fra den norske Kyst. Forh. i Vidensk. 

 Selsk. Christiania. 1871. p. 12. 



Angmagsalik, 140 fathoms, 5 specimens. (In one of the 

 specimens the young ones are protruding from the bursal slits). 



This species was hitherto known only from Norway and 

 the Eastcoast of North-America (Verrill). 



26. Ophioscolex glacialis M. Tr. — PI. II. Fig. 10. 



Sars: Norges Echinodermer. p. 7. — Bell: Op. cit. p. 134. — Grieg: 

 Oph. d. Arktis, p. 268. 



Off Canning Island, 202 fathoms, 4 specimens, the three 

 large, 30 mm. diameter of disk, 130 mm. length of arms. — 



