HEMIASTERIDAE 229 



Specimens from Heard Island and the Ross Sea referred by Clark {op. cit., 1925) to 

 A. Agassi zti I think it questionable whether they are actually A. Agassizii, and Clark 

 expressed himself with some reservation on this point. 



Globiferous pedicellariae were not found in any of these specimens, this type of 

 pedicellaria being thus still unknown in A. Agassizii. 



This species was hitherto known with certainty only from South Georgia ; the finding 

 of it at the Falkland Islands by the 'Discovery' is thus of considerable interest. 



Schizaster (Tripylaster) Philippii (Gray) 



Tripylus Philippii, Gray, 1855. Cat. Recent Echinida Brit. Mus. I, Irregularia, p. 59, pi. v, 



fig. I. 

 Sdiizaster Pliilippii, A. Agassiz, 1872. Revision of the Echini, p. 612, pi. xxvi, figs. 40, 41. 

 S. {Tripylaster) P/iilippii, Mortensen, 1907. Danish ' Ingolf Exped. Echinoidea, 11, pp. 122, 123. 

 S. (Tripylaster) Plulippii, Mortensen, 1910. Swedish South Polar Exped. Echinoidea, p. 90, 



pis. xii, figs. 8, lo-ii ; xix, figs. 5, 7, 15-16, 21, 31, 48-49. 

 Tripylaster Pliilippii, H. L. Clark, 1917. Hawaiian Echini. Echinoneidae . . . Spatangidae, p. 177. 

 For other literary references see my work of 1910, loc. cit. 

 St. 51. 4. V. 26. Off Eddystone Rock, East Falkland Islands, 105-115 m. i dead test. 

 St. WS 83. 24. iii. 27. 14 miles S 64° W of George Island, East Falkland Islands, 137 m. 

 I specimen. 



St. WS 785. 6. xii. 31. 49° 25' S, 62° 37' W, 150 m. i specimen. 



The specimen from St. WS 83 is of medium size, 60 mm. long, 52 mm. broad. That 

 from St. 51, which is an old, dead test, partly covered with worm tubes, is 77 mm. long, 

 72 mm. broad, thus distinctly broader than the younger specimen. I see, however, no 

 reason to doubt their identity, such variation in shape being of common occurrence in 

 most species. In the specimen from St. WS 83 I find the pedicellariae of the typical 

 shapes, as described in my work on the Echinoidea of the Swedish South Polar Expedi- 

 tion. The specimen from St. WS 785 is almost totally denuded, only a couple of small 

 tridentate pedicellariae being left. But it is evidently a typical T. Philippii. 



Amphipneustes Koehleri, Mortensen 



AnipJiipneitstes Koeiileri, Mortensen, 1910. Swedish South Polar Exped. Echinoidea, p. 94, 

 pis. xi, figs. 2-5, 7, 8, 15, 18; xvii, figs. lo-ii ; xviii, figs. 1-2; xix, figs. 3-4, 8-9, 13-14, 19-20, 

 23-25, 27. 



A. Koeiileri, H. L. Clark, 1917. Hawaiian Echini. Echinoneidae. . .Spatangidae, p. 163. 



A. Koehleri, H. L. Clark, 1925. Cat. Recent Sea-Urchins Brit. Mus., p. 198. 



St. 27. 15. iii. 26. West Cumberland Bay, South Georgia, no m. Several specimens. 

 St. 42. I. iv. 26. West Cumberland Bay, South Georgia, 120-204 m. 5 specimens. 

 St. 126. 19. xii. 26. 53° 58' 30" S, 37° 08' W, loo(-o) m. i specimen. 



St. 140. 23. xii. 26. Stromness Harbour to Larsen Point, South Georgia, 122-136 m. Several 

 specimens. 



St. 144. 5. i. 27. Off mouth of Stromness Harbour, South Georgia, 155-177 m. i specimen. 



St. 148. 9. i. 27. Off Cape Saunders, South Georgia, 132-148 m. 4 specimens. 



St. 160. 7. ii. 27. Near Shag Rocks, South Georgia, 177 m. 2 specimens. 



St. 474. 12. xi. 30. I mile W of Shag Rocks, South Georgia, 199 m. Several specimens. 



St. WS 33. 21. xii. 26. 54° 59' S, 35° 24' W, 130 m. 4 specimens. 



