284 TRANSACTIONS LIVEEPOOL BIOLOGICAL SOCIETY. 



believes it to be H. auricula, Rathke. Mr. Beaumont 

 (5) also gives a description of another species of Hali- 

 clystus, which may possibly be new. 



Order DISCOMEDUSiE. 

 Family Pelagim:. 

 Chrysaora isosceles, (Linnaeus 15). 



Byerley (6) states that this medusa is rare, seen mostly 

 during July and August. Walker (7) states it is frequently 

 very common in the L.M.B.C. district. 



Family Cyaneid^. 



Cyancea capillata, (Linnaeus 15). 



Byerley {6) states that it is a very common medusa 

 during the summer. 



I took a small specimen in Port Erin Bay, on May 

 26th, 1893. Umbrella 1J inches in diameter. Larger 

 ones were seen at the beginning of June. 



On April 30th, 1894, I captured a late Ephyra-stage 

 showing the commencement of the long tentacles. On 

 May 9th, I caught a small adult specimen about 10 mm. 

 in diameter. 



Family Ulmarim]. 



Aurelia aurita, (Lamarck 15). 



Aurelia aurita suddenly appeared in Port Erin Bay, on 

 June 2nd, 1893, and in a few days became abundant. 

 But throughout the whole of May I never saw a single 

 specimen. Diameter of the umbrella about 2 to 5 inches. 



In 1894, on March 22nd, the first day of tow-netting, I 

 captured one specimen of the Ephyra-stage and a few at 

 the beginning of April. At the end of April a few of the 

 adult stage were taken ; the largest 18 mm. in diameter. 

 The Ephyrse are certainly scarce at Port Erin and the 



