250 MR EDWARD T. BROWNE ON 



The radial canals show a certain amount of variation, especially in the interradial 

 series, and a slight amount of anastomosis takes place near the margin of the umbrella. 



The sense-organs are exactly like those described in the Maldive specimen. The 

 tentaculocysts are at right angles to the margin of the umbrella, pointing towards the 

 ex-umbrella, and stand in a kind of alcove which is at the end of a deep groove open on 

 the dorsal or ex-umbrellar side. It is by the position and structure of the sense-organ 

 that this species can at once be distinguished from Aurelia aurita. 



The subgenital cavities are nearly circular, and have a fairly thick covering, with a 

 small circular aperture about 2 mm. in diameter. They are similar in shape to those 

 of the Maldive specimen, but are not so prominent and have not such a thick external 

 wall. The gonads form oval or horse-shoe-shaped bands. They have not reached 

 maturity. 



Jelly-fishes in an unrecognisable condition were taken at the following stations : — 



Station 325, Scotia Bay, South Orkneys, 25th March 1903. "Fragments of a 

 Berber 



Station 414, lat. 71° 50' S., long. 23° 30' W. ; 0-1000 fathoms. Vertical net. 

 One Trachomedusa. Fragments of the umbrella of a Scyphomedusa. One specimen of 

 a large Pleurobrachia ? 



Station 415, lat. 71° 28' S., long. 22° 32' W. ; 0-2338 fathoms. A lump of 

 jelly found in a sounding-tube. 



LIST OF BOOKS AND MEMOIRS QUOTED IN THE TEXT. 



Agassiz, L., 1862, Contributions to the Natural History of the United States of America, vol. iv. Boston. 

 Browne, E. T., 1902, "A Preliminary Report on Hydroniedusae from the Falkland Islands," Ann. Mag. 



Nat. Hist., ser. 7, vol. ix., pp. 272-284. 

 ,, 1905, " Scyphomedusae " in Gardiner's Fauna and Geography of the Maldive and Laccadive 



Archipelagoes, vol. ii., pp. 958-971, pi. xciv. Cambridge. 

 ,, 1907, "A Revision of the Medusae belonging to the Family Laodiceidae," Ann. Mag. Nat. 



Hist., ser. 7, vol. xx , pp. 457-480. 

 Fbwk.es, J. W., 1888, "On certain Medusae from New England," Bull. Mus. Cornp. Zovl., vol. xiii., 



pp. 209-240, pis. i.-vi. 

 Haeckel, E., 1879-80, Das System der Medusen. Jena. 



„ 1881, "Report on the Deep-sea Medusae dredged by H.M.S. Challenger during the years 



1872-1876," Challenger Reports, vol. iv. 

 Lesson, R. R, 1830, Voyage autour du Monde . . . sur la corvette "La Coguille" pendant les annees 



1822-1825: Zoologie. Paris. 

 Maas, O., 1904, " M^duses provenant des campagnes des yachts Hirondelle et Princesse Alice " (1886-1903), 



Result. Camp, scient. Monaco, fasc. xxviii., 71 pp., 6 pis. 

 „ 1905, "Die craspedoten Medusen der Siboga-Expedition," Monograph X., 84 pp., 14 Tafn. 



„ 1906, "Die arktischen Medusen (ausschliesslich der Polypomedusen)," Fauna Arctica, Bd. iv., 



pp. 481-526. 

 „ 1906, Expedition antarctique Beige " Belgica" : Zoology, "Medusen," 32 pp., 3 pis. Anvers. 



