TRICHASTERIDAE— OPHIOMYXIDAE 241 



young on an adult — not necessarily its parent — and not a case of viviparity or brood- 

 protection. 



That the specimens from South Africa referred to G. chilensis have nothing to do with 

 this South American species, but represent a distinct species, G.pectinatus, Mortensen, 

 I showed in my paper on the Echinoderms of South Africa (Papers from Dr Th. 

 Mortensen 's Pacific Exped., Lxv (Vid. Medd. Dansk Naturh. Foren., 93), 1933, 

 p. 283). 



As for the specimens from Kerguelen and New Zealand, likewise referred to G. 

 chilensis, I must reserve opinion until the examination of new and sufficient material 

 allows a definite judgment. The zoogeography of other sub-Antarctic Echinoderms is 

 not in favour of these specimens being identical with the South American G. chilensis. 



Family TRICHASTERIDAE 



Astroceras elegans (Bell) 



Astroschema elegans. Bell, 1917. Brit. Antarct. ('Terra Nova') Exped. Echinoderma, p. 7. 

 Astroceras elegans, Mortensen, 1924. Echinoderms of New Zealand and the Auckland-Campbell 



Islands. II, Ophhiroidea. Papers from Dr Th. Mortensen's Pacific Exped., xx (Vid. Medd. 



Dansk Naturh. Foren., 77), p. 107, pi. iv, fig. 3. 

 A. elegam, Mortensen, 1933. Studies of Indo-Pacific Euryalids. Vid. Medd. Dansk Naturh. 



Foren., 96, p. 53. 



St. 934. 17. viii. 32. 34° 11' S, 172° 10' E, north of New Zealand, 92-98 m. 2 specimens. 



These specimens differ from those hitherto known in the arms being of a uniform 

 light brown colour (apart from the white tubercles), not an annulated appearance due 

 to alternating rings of white and brown skin. I do not think this colour difference to be 

 any serious objection to referring them to the species characteristic of the area off the 

 north end of New Zealand, A. elegans. 



Family OPHIOMYXIDAE 

 Ophiomyxa vivipara, Studer 



Ophiomyxa vivipara, Studer, 1876. tjber Echinod. a. d. antarkt. Meere. Monatsber. Akad. 



Berlin, p. 462. 

 Ophioscolex Coppingeri, Bell, 1881. Echinod. Straits of Magellan and coast of Patagonia. Proc. 



Zool. Soc. Lond., 1881, p. 98, pi. viii, fig. 6. 

 Ophiomyxa vivipara, Ludwig, 1898. Ophiuren d. Sammlung Plate. Zool. Jahrb., Suppl. iv, 



p. 768. 

 O. vivipara, H. L. Clark, 1915. Cat. Recent Ophiurans, p. 170, pi. 2, figs. 1-2. 

 O. vivipara, Mortensen, 1920. On Hermaphroditism in viviparous Ophiurids. Acta Zoologica, i, 



p. 10. 

 O. vivipara, H. L. Clark, 1923. Echinoderm Fauna of South Africa. Ann. S. African Mus., 



xni, p. 313. 

 O. vivipara, Mortensen, 1933. Echinoderms of South Africa. Papers from Dr Th. Mortensen's 



Pacific Exped., lxv (Vid. Medd. Dansk Naturh. Foren., 93), p. 301. 



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