LIMNOMEDUSAE 41 



The specimen is well preserved, 45 mm. in diameter; the stomach is 28 mm. wide; 25 radial canals 

 leave the periphery of the stomach and reach to the ring-canal. There are 30 tentacles situated at 

 somewhat irregular distances from each other ; between successive tentacles there are 3-7 rudiments, 

 with long excretory papillae. The statocysts are very numerous. The radial rows of gelatinous papillae 

 on the subumbrella are very conspicuous. The specimen thus agrees perfectly with the descriptions 

 of Z. vagans. 



Distribution. Malayan Archipelago (Maas 1905); the Philippines (Bigelow 1912 and 1919); off 

 Panama and Colombia (Bigelow 1940). Now also found near the Cape of Good Hope, South Africa. 



LIMNOMEDUSAE 



Family Moerisiidae 



Tiaricodon coeruleus Browne 1902 



1902 Tiaricodon coeruleus Browne, p. 276. 



19126 Tiaricodon caeruleus VanhofFen, p. 6. PI. i, fig. 2; PI. 2, figs. 2-6. 



1939 Tiaricodon coeruleus Browne & Kramp, p. 311. PI. 18, figs. 1-6; PI. 19, figs. 8-1 1. 



19486 Tiaricodon coeruleus Kramp, p. 6. 



Occurrence: St. 53. 12. v. 26. Port Stanley, East Falkland Island. Net : RM 0-2 m. 3 specimens. 



St. 55. 16. V. 26. Entrance to Port Stanley, East Falkland Island. Net: BTS 10-16 m. 4 specimens. 



St. 57. 16. V. 26. Port William, East Falkland Island. Net: BTS 15 m. 4 specimens. 



St. 58. 19. V. 26. Port Stanley, East Falkland Island. Net: N 70 H 5-0 m. 47 specimens. 



The specimens vary between 3 and 12 mm. in diameter. 



Distribution. This pretty medusa has previously been found in considerable numbers at the 

 Falkland Islands. Also recorded from a locality south of the South Orkney Islands (Kramp) and from 

 the Strait of Magellan and on the Pacific coast of Peru, off Callao (Vanhoffen). 



Family Proboscidactylidae 



Proboscidactyla mutabilis (Browne 1902) 



1902 Willia mutabilis Browne, p. 280. 



19126 IWillia mutabilis Vanhoffen, p. 7. Text-fig. 2. 



1938a Willia mutabilis Thiel, p. 302. 



1939 Willia mutabilis Browne & Kramp, p. 302. PI. 14, figs. 8-9; PI. 17, figs. 10-12; PI. 19, fig. 12. 



Occurrence: St. 58. 19. v. 26. Port Stanley, East Falkland Island. Net: N 70 H 5-0 m. 24 specimens. 



St.WS832. i.ii. 32. 50° 49' 8,67° 55' W. Near the coast of southern Patagonia. Net: N 100 B 70-0 m. i specimen. 



The structure, development and variation of this species was described by Browne & Kramp (1939). 

 The variation in twelve of the present specimens may be summarized as follows : 



No. of No. of main No. of tentacles Average no. 



specimens Diam. (mm.) radial canals + young bulbs of tentacles 



678 



I 3 . I . 34 34 



8 4 413 39-50 44 



3 5 2.1 38-48 44 



Total 12 624 



Distribution. Falkland Islands (Browne); Punta Arenas in the Strait of Magellan (Vanhoffen); 

 north-east of Puerto Madryn and on the Patagonian Bank (Thiel). A very peculiar record is recently 

 given by Nair (1951, p. 57), who thinks he has found this species on the Trivandrum Coast in South- 

 West India. 



