MEDUSA. 5 



The nine species belonging to the Anthomedusse and Leptomedusae are probably 

 all liberated from hydroids, which have still to be found. In the report on the 

 Hydroids collected by the 'Discovery' Messrs. Hickson and Gravely (1907) draw 

 attention to the fact that out of twenty-three species of Hydroids found in McMurdo 

 Sound not one exhibits free-swimming medusiform gonophores. When we take into 

 consideration the difficulties under which Mr. Hodgson worked, and the very small 

 area of ground scraped by the trawl and dredge, there seem to be good reasons for 

 presuming that more species have still to be recorded. 



The Scyphomedusse are represented by six species, of which two, belonging to 

 Periphylla and Atolla, have a wide geographical range, and four are at present 

 confined to the Antarctic region. 



The reports on the Medusae collected by the recent expeditions to the Antarctic 

 have now been published, and I give a list of the species found south of latitude 60 S. 



' Belgica' Collection. (Maas, 1906.) 

 P/dalidium iridescens, n.sp. 



Lat. 70 21' 8., to 71 15' S. Long. 82 48' W., to 93 17' W. (Four 

 specimens.) 



Isonema ampluin (Vanhoffen). 



Lat. 69 48' S., to 70 49' S. Long. 81 19' W., to 93 17' W. (Forty- 

 two specimens.) 



Homoenema racovitzse, n.sp. 



Lat. 70 09' S. Long. 82 35' W. (One specimen.) 

 Solmundella mediterranea (Miiller). 



Lat. 69 48' S., to 70 50' S. Long. 81 19' W., to 92 22' W. (Twelve 



specimens.) 

 Couthouyia, ? sp. [= Desmonema']. 



Lat. 69 59' S. Long. 82 39' W. (One specimen.) 



' Scotia ' Collection. (Browne, 1908). 



Halicreas papillosum, Vanhoffen var. antarctica nov. 



Lat. 70 02' S. Long. 23 40' W. 0-1000 fms. (Two specimens.) 

 Botryneina brucii, n.g. et n.sp. 



Lat. 64 48' S. Long. 44 26' W. 0-2485 fms. (One specimen.) 

 Atolla wyvillii, Haeckel. 



Lat. 72 02' S. Long. 23 40' W. 0-1000 fms. (One specimen.) 



'Fran9ais' Collection. (Maas, 1908.) 



Couthouyia gaudichaudi, Lesson. [= Desmonema gaudichaudi, Maas.] 



About Lat. 65 S. Long. 66 W. (Paris). Off Wandel Island. 

 Diplulmaris antarctica, n.g. et n.sp. 



About Lat. 65 S. Long. 66 W. (Paris). Off Anvers Island. 



u 2 



