ASTEROIDEA loi 



Type locality. Kerguelen Island. 



Distribution. As far south as Alexander Land (68 35' S, 72° 40' W, 297 m.); off 

 Adelaide Island; Petermann Island; Palmer Archipelago; South Orkneys; South 

 Sandwich Islands; South Georgia. East Antarctica from 88° to 145° 21' E and 

 64° 32' to 66° 55' S. Heard Kerguelen and Marion Islands. The greatest depth appears 

 to be 354 fathoms at 66° 51' S, 142° 06' E. 



The species is evidently circumpolar, Marion, Kerguelen and South Georgia being 

 its northern outposts. 



Odontaster validus Koehler 



Odontaster validus Koehler, 1906, p. 6, pi. 3, figs. 22-26. — 1908, p. 12. — 191 1, p. 27. — 1912, p. 68, 



pi. 7, figs. 1-4, 12. 

 Odontaster tenuis Koehler, 1906, p. 8, pi. 4, figs. 33-38. — 1920, p. 232, pi. 40, figs. 1-3, 6; pi. 41, 



figs. 3, 4; pi. 72, fig. 4. 

 Cycethra verrucosa Bell, 1908, p. 10, pi. 5, fig. ih. — 1917, pi. i, figs. 1-6 (fide Koehler). 

 Gnathaster validus Koehler, 1920, p 228, pi. 34, fig. 10; pi. 40, figs. 4, 5, 7; pi. 41, figs. 2, 5; pi. 72, 

 fig. 3. — 1923, p. 84 (Shag Rocks, South Georgia). 



St. 145. Stromness Harbour, South Georgia, 26-35 m., 2 specimens. 



St. 163. Paul Harbour, Signy Island, South Orkneys, 18-27 m., 18 specimens. 



St. 164. East end of Normanna Strait, South Orkneys, near Cape Hansen, Coronation Island, 

 24-36 m., 97 specimens. 



St. 173. Port Foster, Deception Island, South Shetlands, 24 specimens. 



St. 368. Douglas Strait, Southern Thule, South Sandwich Islands, 653 m., 2 forma validus, 

 I forma tenuis. 



St. 370. Two miles north-east of Bristol Island, South Sandwich Islands, 18-80 m., 8 specimens 



St. 456. One mile east of Bouvet Island, 40-45 m., 3 specimens. 



St. 1941. Leith Harbour, South Georgia, 55-22 m., 2 specimens. 



St. 1959. Scotia Bay, South Orkneys, 5 m., 14 specimens (taken in fish trap). 



St. WS 25. Undine Harbour (North), South Georgia, 18-27 ^-^ sand, 6 specimens. 



St. WS 62. Wilson Harbour, South Georgia, 15-45 "i., 2 specimens. 



St. MS 6. East Cumberland Bay, South Georgia, 27 m., 10 specimens. 



St. MS 10. Same as MS 6, 27 m., 17 specimens. 



St. MS 12. Same as MS 6, 25-53 m., 2 specimens. 



St. MS 63. Same as MS 6, 23 m., 8 specimens. 



St. MS 71. Same as MS 6, 120-60 m., i specimen. 



St. MS 74. Same as MS 6, 22-40 m., 3 specimens. 



Cumberland Bay, South Georgia, November 1929, 2 specimens. 



Koehler has elaborately described and figured this species, which Bell recorded and 

 figured as Cycethra verrucosa (1908, p. 10, pi. 5, fig. i). The British Museum has kindly 

 forwarded one of Bell's specimens from the Discovery Winter Quarters. It is an 

 example of Odontaster validus forma validus with rather attenuate rays, R 44 mm., 

 r 18-5 mm. 



Since there are 97 specimens from St. 164 it seems desirable to analyse the variations 

 found at this station and to include also variants from other localities. These are given 

 in synoptical form and O. meridionalis is introduced to indicate its position with refer- 

 ence to the varieties of validus. O. tenuis intergrades perfectly with the typical form. Of 



