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X. — The Medusas of the Scottish National Antarctic Expedition. By Edward 

 T. Browne, Zoological Eesearch Laboratory, University College, London. 

 Communicated by Dr W. S. Bruce. (With Two Plates.) 



(MS. received November 27, 1907. Read December 16, 1907. Issued separately May 1, 1908.) 



This is a report upon the Medusse collected by the Scottish National Antarctic 

 Expedition during the voyage of the Scotia in the years 1902, 1903, and 1904, 

 under the leadership of Dr W. S. Bruce, to whom I am indebted for the opportunity 

 of examining the specimens. 



The collection is a small one containing twelve species, but five more species would 

 have probably been added if only the specimens had been in a recognisable condition. 

 Some of the specimens are in excellent condition, and these were mostly taken at the 

 surface, but others are very much damaged. Unfortunately, the damaged specimens 

 are just the ones wanted in good condition, as they mostly come from the Antarctic 

 region and from the stations where the nets were sent down to a great depth. The 

 damage is done in the nets, and other collections which have passed through my hands 

 tell the same tale. It is the rubbing together of the sides of the net that tears the 

 medusae to pieces. All deep-sea nets should be so constructed that the sides of the nets 

 cannot come together, and also provided with a large can at the end. 



The following is a classified list of the species taken on this expedition : — 



Hydromedus^. 



ANTHOMEDUS.E. 



Hippocrene rnacloviana (Lesson). Falkland Islands. 

 Willia mutabilis, Browne. Falkland Islands. 



Leptomedus^:. 



Staurophora falklandica, n. sp. Falkland Islands. 

 Phialidium simplex, Browne. Falkland Islands. 



Trachomedus^e. 



Halicreas papillosum, Vanhbffen, var. antardicum, nov. Antarctic Ocean. 

 Botrynema brucei, n. g. et n. sp. Antarctic Ocean. 



SCYPHOMEDUS^E. 



CORONATA. 

 DlSCOPHORA. 



Atolla chuni, Vanhbffen. South Atlantic. 

 Atolla wyvillei, Haeckel. Antarctic Ocean. 



Pelagia perla (Slabber). North Atlantic. 

 Desmonema chierchiana, Vanhbffen. Falkland Islands. 

 Phacellophora ornata (Verrill). South Atlantic. 

 Aurelia solida, Browne. North Atlantic. 



TRANS. ROY. SOC. EDIN., VOL. XLVI. PART II. (NO. 10). 35 



