Hydrozoa. 3 1 1 



Ctenophores), and if very weak solutions are used, the fluid must be 

 changed several times. Specimens should never be stored in a 

 solution of less than 10 per cent, (formaldehyde, 40 per cent., 

 10 c.c, and water 90 c.c. ; either fresh water or sea water may be 

 used), and if there should be any doubt a few drops of strong 

 formaldehyde may be added to each ounce of fluid in the bottle 

 before finally storing away. Mr. Vallentin's collection of Medusae 

 from the Falklands reached London in excellent condition owing to 

 his taking the necessary precautions in using plenty of formaline 

 and filling the bottles up to the stoppers with fluid. 



When working over the ' Southern Cross' Collection I made rough 

 notes on the contents of each bottle, and finally wrote a report upon 

 the collection for the use of Mr, T. V. Hodgson, the Zoologist on the 

 ' Discovery.' I pointed out to him the importance of making another 

 collection, and gave to him full instructions on the preservation and 

 storage of specimens. As the ' Discovery ' is bound for Cape Adare and 

 its adjacent shores it is probable that most of these Medusae will 

 again be taken, and, let us hope, will be brought safe home in good 

 condition. 



It was not iny original intention to publish at present any 

 descriptions of the specimens in this collection, but as the Editor of 

 the Eeports on the ' Southern Cross ' Collection wishes to include an 

 account of the Medusae, I have considered it is best simply to give 

 a copy of the notes which I supplied to Mr. Hodgson and to leave 

 the naming of the species until the ' Discovery ' Collection has been 

 investigated. This course will probably lessen the addition of new 

 species based upon material which can only give imperfect and 

 perhaps useless descriptions. 



Nearly all the specimens were taken close in shore. The surface 

 temperature of the sea was between 28 • 6° Fahr. and 30° Fahr. 



ANTHOMEDUS^.. 



Borchgrevink's Medusa. 



Three specimens in fairly good condition. - 



Umbrella globular. About 20 mm. in height and 15-18 mm. 

 in width. 



Sub-umbrella cavity, small, very long and cylindrical. 



