i8 DISCOVERY REPORTS 



mentioned above from a locality off the coast of Argentina, occurred far away from the other areas of 

 distribution. All the specimens were taken in the upper water-layers, except at St. loi, where the 

 depth of the haul is stated to be 1310 1410 m. The possibility exists that the single specimen was really 

 caught at a higher level ; on the other hand, in the Mediterranean the species may sometimes occur in 

 rather deep water. 



Pandea rubra Bigelow 191 3 



1913 Pandea rubra Bigelow, p. 14. PI. 2, figs. 1-7. 



1926 Pandea rubra Kramp, p. 96. PI. 2, fig. 15. 



1938 Pandea rubra Bigelow, p. 107. 



Occurrence: St. 107. 4. xi. 26. 45° 03' S, 17° 03' E. South of Africa. Net: N 450 V, 850-950 m. Fragments of one 



large specimen. 

 St. 151. 16. i. 27. 53° 25' S, 35° 15' W. North of South Georgia. Net: N 450 V, 1275-1025 m. i specimen, diam. 



c. 80 mm. 

 St. 1131. 24. ii. 33. 54" 22' 36" S, 34" 08' 24" W. Weddell Sea. Net: N 70 V, 1000-800 m. i specimen, diam. 



38 mm., height 36 mm. 

 St. 1989. 10. iii. 37. 55° 53' 12" S, 32° 46' 48" W. Weddell Sea. Net: TYFB, i50o-i20om. 2 specimens, diam. 



64 mm., height 58 mm.; diam. 62 mm., height 63 mm. 



The specimens from the Weddell Sea (Stns 1131 and 1989) are in beautiful condition and have 

 retained their deep reddish-brown colour. The exumbrellar jelly is fairly thick and very soft. There 

 are no tracks of nematocysts on the exumbrella. The epithelium of the subumbrella consists of poly- 

 gonal cells containing a dense mass of pigment granules ; no muscular fibres are seen. As stated by 

 Bigelow (1913) the radial canals are 'showing as pale bands'; they are very faintly pigmented except in 

 their lateral notches, which are of a deep brown colour. The ring-canal is likewise pale, but the velum, 

 which is very narrow, is dark. In the tentacles a dark brownish colour is seen in the endoderm. No 

 ocelli are seen. On the label of St. 1989 is written: 'Exterior transparent when fresh, subumbrella 

 deep reddish brown.' 



As far as the number of tentacles is concerned, Bigelow (1938, p. 107) has compared specimens from 

 the North-West Pacific with specimens from Bermuda and the North Atlantic. He found an indication 

 that the Atlantic specimens had fewer tentacles than those from the Pacific, but he added : ' . . . larger 

 series might well show that there is actually no regional difference in this respect '. It is interesting 

 to note that in the present specimens from the Weddell Sea the number is comparatively large : 



Height of bell (mm.) 36 58 63 



No. of tentacles 20 22 24 



The largest specimen observed by Bigelow (1913, 75 mm. high) between San Francisco and Unalaska 

 Island had about 20 tentacles. 



Distribution. This beautiful medusa belongs to the deep and intermediate water-layers and has 

 a very extensive distribution : North-West Pacific (Bigelow 1913) ; North-East Atlantic (Kramp 1926) ; 

 Bermuda (Bigelow 1938). Its known area of distribution is thus greatly augmented by the finds 

 mentioned above from the Weddell Sea and South Africa. 



Zanclonia weldoni (Browne 19 10) 



1910 Catablema weldoni Browne, p. 13. PI. I, figs. 1-5. 



19120 Catablema weldoni VanhcifFen, p. 362. PI. 24, fig. 3. 



1913 Zanclonia weldoni Ilartlaub, pp. 313, 348. Text-figs. 261, 2A2. 



Occurrence: (Text-fig. 3) Stns 12, 133, 138, 139, 151, 825, 1050, near South Georgia. 



St. 727. South-west of Cape Horn. 



