ASTEROIDEA 251 



sheath of tissue surrounding the spines. Asterias neglecta Bell and A. glomerata Sladen 

 are representatives of a form with heavy circumspinal sheaths and well-developed crossed 

 pedicellariae. Koehler has already recognized this as variety glomerata (1923, p. 29) but 

 neglecta Bell has priority. 



In another form the tissue of the sheath is well developed but there are few pedicel- 

 lariae, as in brucei. However, the latter has distinctly smaller crossed pedicellariae and 

 fewer dorsolateral spines. In both formae there are "broader and slenderer" rayed 

 specimens. 



Two inferomarginal spines with chisel-shaped end and terete base occur with greatest 

 frequency but this number varies sporadically to i, less often to 3. Certain examples, 

 especially in the southern part of the species-range have a single spine more often than 2. 

 A specimen with R 76 mm. from St. 84 has the disk arched and the bases of rays approxi- 

 mated to form a nidamental cavity in which are 161 young, 5-7 mm. in diameter. All 

 have 5 rays. 



Distribution. Falkland Islands; Magellan region, north to latitude 44° 14' S and 

 longitude 53°43' W; South Georgia; South Shetland Islands; Antarctic Archipelago 

 south to Alexander I Island, 68'' 35' S, 72° 40' W; Bellingshausen Sea, 70° 23' S. 



Diplasterias meridionalis (Perrier) 

 (Fig. M, 2-2b; Plate XXI, fig. 4; Plate XXII, fig. i) 



Asterias meridionalis Perrier, 1875, p. 76. — Smith, 1879, p. 272, pi. 16, fig. i. 



Asterias mollis Studer, Abh. Akad. Wiss. Berlin, 1884, p. 8. 



Asterias studeri Bell, 1881, p. 91.— Studer, Abh. Akad. Wiss. Berlin, 1884, p. 8, pi. i, fig. i. 



Podasterias meridionalis Koehler, 1917, p. 20, pi. 2, figs. 11, 12; pi. 3, figs, i, 2, 4, 5, 6, 7; pi. 6, 



fig. 8; pi. 7, fig. 9; 1923, p. 31, pi. 2, fig. I (not pi. 13, fig. i).— Doderlein, 1928, p. 294. 

 Diplasterias meridionalis Perrier, 1891, p. 7. — Meissner, 1904, p. 8. — Koehler, 1912, pp. 211, 

 213, 220, 223, 252. — Fisher, 1930, p. 231. 



St. 42. Off mouth of Cumberland Bay, South Georgia, 120-204 m., 2 young specimens. 



St. 140. Stromness Harbour to Larsen Point, South Georgia, 122-136 m., green mud and stones, 

 4 specimens (2 with 7 rays). 



St. 141. East Cumberland Bay, South Georgia, 17-27 m., i specimen. 



St. 149. Mouth of East Cumberland Bay, South Georgia, 200-234 m., mud, 2 young specimens. 



St. 160. Near Shag Rocks, 53° 43' 40" S, 43° 57' W, 177 m., grey mud, stones, 2 young specimens. 



St. 1562. Off Marion Island, 46° 52' S, 37° 55' E, 97-104 m., 3 young specimens. 



St. 1563. Off Marion Island, 46° 48-4 S', 37° 49-2' E, 101-106 m., 6 specimens. 



St. WS 25. Undine Harbour (North), South Georgia, 18-27 n^-- ^^^ ^nd sand, 2 young speci- 

 mens. 



St. WS 27. West Cumberland Bay, South Georgia, 106-109 m., gravel, i young specimen. 



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



St. MS 10. Same, 26 m., 3 specimens. 



St. MS 67. Same, 38 m., 2 young specimens. 



St. MS 71. Same, 110-60 m., 2 specimens. 



St. MS 74. Same, 22-40 m., i young specimen. 



Cumberland Bay, South Georgia, i young specimen. 



Government Jetty, Grytviken, South Georgia, i specimen. 



