ANTHOMEDUSAE 15 



Owing to the configuration of the marginal tentacles this medusa might be referred to Amphinema, 

 but owing to the very long mesenteries, I think we must place it in the genus Merga, at least provision- 

 ally. It differs from the other species of this genus by the interradial position of the gonads, by the 

 rudimentary tentacles being developed into tenaculae, and by the possession of an apical chamber 

 above the stomach. 



Annatiara affinis (Hartlaub 1Q13) 



1913 Tiaranna affinis Hartlaub, p. 269. Text-figs. 220-1. 



1920 Tiaranna affinis Kramp, p. 6. PI. i, fig. i. 



1926 Tiaranna affinis Kramp, p. 68. PL i, figs. 15-17. 



1934 Tiaranna affinis Ranson, p. 436. 



19406 Annatiara affinis Russell, p. 518. 



1953 Annatiara affinis Russell, p. 200. Text-figs. 101-3. 



Occurrence: St. 89. 28. vi. 26. 34° 05' 15" S, 16° 00' 45" E. South Africa. Net: TYF looo(-o) m. i specimen, 



diam. 19 mm. 

 St. 691. 8. V. 31. 00° 26' S, 29° 56' W. Net: TYFB 400-0 m. i specimen, diam. 17 mm. 

 St. 697. 12. V. 31. 09° 15' N, 30" 02' W. Net: TYFB 460-0 m. 2 specimens, diam. 12-13 mm. 



Distribution. This is an oceanic medusa, occurring mainly in the intermediate water masses. It 

 has been recorded from west of the British Isles and from the Bay of Biscay, and I have seen a 

 specimen taken off Liberia, on the west coast of Africa. The first of the Discovery localities is off the 

 southern part of the west coast of Africa, the two others from the central part of the Atlantic Ocean, 

 between the Cape Verde Islands and Cape St Roque, South America. 



Halitholus intermedius (Browne 1902) 



1902 Tiara intermedia Browne, p. 277. 



1939 Halitholus intermedius Browne & Kramp, p. 288. PI. 14, fig. 7, PI. 16, figs. 1-2. 



Occurrence: St 100. 2. x. 26. 33° 20' S, 15° 18' E to 33° 46' S, 15° 08' E. Net: TYF 475(-o) m. i specimen, 



diam. 5 mm. 

 St. 1374. 24. V. 34. 31° 46' 36" S, 29° 46' 18" E. Net: TYFB 230-0 m. i specimen, diam. 4 mm., height 6-5 mm. 



I have compared these specimens with specimens from the Falkland Islands and found perfect 

 agreement. 



Distribution. Previously known only from the Falkland Islands, where this medusa is very 

 common. The two localities mentioned above are off the coast of South Africa, one near Capetown, 

 the other off the south coast. This subantarctic species is thus able to live in the cool water of the 

 Benguela Current. 



Leuckartiara octona (Fleming 1823) 



1913 Leuckartiara octona Hartlaub, p. 285. Text-figs. 239-53. 



Occurrence: St. 79. 13. vi. 26. 34° 48' S, 16° 36' W. North-west of Tristan da Cunha. Net: N 450 V looo-o m. 



I specimen. 

 St. 273. 31. vii. 27. 09° 38' 00" S, 12° 42' 30" E. Off Angola. Net: TYF 230-20o(-o) m. i specimen. 

 St. 276. 5. viii. 27. 05° 54' S, 11° 19' E. Off Congo River. Net: TYF i5o(-o) m. 2 specimens. 

 St. 280. 10. viii. 27. 00° 36' S, 08° 28' E. Off French Congo. Net: TYF 200-1 oo(-o) m. i specimen. 

 St. 701. 16. x. 31. 14° 39' 18" N, 25° 51' 42" W. Near Cape Verde Islands. Net: TYFB 242-0 m. 2 specimens. 



Dimensions of the specimens 



