258 DISCOVERY REPORTS 



The specimen is much smaller than Koehler's type; R 32 mm., r 7-5 mm. Koehler 

 remarks that this species superficially resembles Lysasterias perrieri. Cryptasterias 

 bears to Diplasterias much the same relation that Lysasterias does to Anasterias. 



Diplasterias induta Koehler (1908, p. 575, pi. 7, figs. 68-70) from Scotia Bay, South 

 Orkneys is obviously immature and is probably young turqiieti. 



Type locality. Booth Wandel Island. 



Distribution. Booth Wandel Island and South Orkneys, 0-36 m. 



Genus Neosmilaster Fisher 

 Neosmilaster Fisher, 1930, p. 237. Type Asterias georgiana Studer. 



Diagnosis. Resembling Diplasterias in having diplacanthid adambulacral plates and 

 gonads which open ventrally, but differing in having abactinal pedicellariae scattered 

 among small spinelets rather than in circlets on circumspinal sheaths; in having the 

 inferomarginal spines in oblique, transverse combs of from 2 to 5, as in Smilasterias. 

 Actinal plates spiniferous, varying from one-third to one and one-half series ; straight 

 pedicellariae conspicuous, not toothed; abactinal skeleton an irregular, close, or medium 

 open net, the small spinelets, with interspersed papulae, either close-set or spaced 

 according to relative compactness of skeleton ; superomarginal spinelets similar to and 

 only slightly larger than abactinal ; prominent actinal papulae. 



Remarks. This genus was instituted for 2 species which at least superficially resemble 

 one another more than they do typical Diplasterias, to which they have been assigned by 

 Perrier and Koehler. It differs from Smilasterias in having well-developed actinal 

 papulae and gonads which open ventrally (paedophoric). 



Neosmilaster georgianus (Studer) 



Asterias georgiana Studer, 1885, p. 150, pi. i, fig. T,a-d. 

 Diplasterias georgiana Perrier, 1891, p. 7. 

 Podasterias georgiana Koehler, 1917, p. 26; 1920, p. 41. 

 Ctenasterias georgiana Koehler, 1923, p. 40, pi. 3, figs. 3-7, 10. 

 Neosmilaster georgianus Fisher, 1930, p. 237. 



St. 142. East Cumberland Bay, South Georgia, 88-273 i^-' ^ specimen. 

 St. 145. Stromness Harbour, South Georgia, 26-45 m., 10 specimens. 

 St. 159. South Georgia, 53° 52' 30" S, 36° 08' W, 160 m., rock, i specimen. 

 St. 179. Melchior Island, Schollaert Channel, Palmer Archipelago, 64° 20' S, 63°oi'W, 160- 

 335 m., mud, I specimen. 



St. WS 25. Undine Harbour (N.), South Georgia, 18-27 '""•> "^"^^ ^'^'^ sand, 6 specimens. 



St. WS 56. Drygalski Fjord, South Georgia, 2 m., kelp roots, 2 specimens. 



St. WS 65. Undine Harbour, South Georgia, kelp roots, i specimen. 



St. MS 6. East Cumberland Bay, South Georgia, 27 m., 2 specimens. 



St. MS 10. Same, 26 m., 15 specimens. 



St. MS 12. Same, 25-53 m., i specimen. 



St. MS 63. Same, 23 m., 5 specimens. 



St. MS 64. Same, 15-7 m., i specimen. 



