. Discovery reports. Discovery (Ship); Scientific expeditions; Ocean; Antarctica; Falkland Islands. 238 DISCOVERY REPORTS St. 39. 25. iii. 26. West Cumberland Bay, South Georgia, 179-235 m. 4 specimens. St. 123. 15. xii. 26. Off mouth of Cumberland Bay, South Georgia, 230-250 m. 2 specimens. 23. xii. 26. Stromness Harbour to Larsen Point, South Georgia, 122-136 m. 3 speci- St. 140. mens. St. 144. St. 148. St. 170. 5. i. 27. Off mouth of Stromness Harbour, South Geotgia, 155-178 m. 9. i. 27. Off Cape Saunders, South Georgia, 132-148 m. i specimen. 23. ii. 27. Off Cape Bowles, Clarence Island, 3
. Discovery reports. Discovery (Ship); Scientific expeditions; Ocean; Antarctica; Falkland Islands. 238 DISCOVERY REPORTS St. 39. 25. iii. 26. West Cumberland Bay, South Georgia, 179-235 m. 4 specimens. St. 123. 15. xii. 26. Off mouth of Cumberland Bay, South Georgia, 230-250 m. 2 specimens. 23. xii. 26. Stromness Harbour to Larsen Point, South Georgia, 122-136 m. 3 speci- St. 140. mens. St. 144. St. 148. St. 170. 5. i. 27. Off mouth of Stromness Harbour, South Geotgia, 155-178 m. 9. i. 27. Off Cape Saunders, South Georgia, 132-148 m. i specimen. 23. ii. 27. Off Cape Bowles, Clarence Island, 342 m. i specimen. 4 specimens. Most of the larger specimens of this species are carrying a smaller one on their back (Plate VII, fig. 8), a fact naturally leading to the suggestion that this is a sort of copula- tion, the larger specimen being the female, the smaller the male. And so it actually is, as proved by the examination of the gonads of these specimens. It was possible also to demonstrate that the species is viviparous. The two first specimens opened had their bursae entirely empty; the third had them packed with eggs, which seemed, however, to be only just fertilized. But the fourth specimen opened settled the question, for it had the bursae filled with embryos, all in the same stage of development. The embryos. a A^)^ Fig. 2a-c. Astrochlamys bruneus, Koehler. a. Part of oral side, xS. b, Embryo, showing the five terminal plates, and in the centre the mouth, x8o. c, Arm spine, X45. Fig. 2 d. Arm spine of Astrochlamys sol, , X45. were small and star-shaped, with an indication of a mouth invagination and the first indication of the skeleton, viz. the terminal plate; but as yet there was no trace of the ambulacral skeleton or of any other plates (Fig. 2 b). There were some 200 embryos in each bursa, which means that they cannot reach any large size before they leave the mother—in conformity with the small size of the genital slits. The eggs are shed (into the bursa
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