734 Proceedings of the Royal Irish Academy. 



In 1898, a few Ephyrae taken in Pebrnaiy and March. 

 Adult specimens seen from May to August ; only a few at a 

 time, and usually in a damaged condition. 



The scarceness of the Ephyrae diuTing the spring seems to in- 

 dicate that the Scyphistoma stage is either absent or veiy scarce 

 in the harboui'. 



Chrysaora isosceles (Linn.). 



In 1895, very abundant in the harbour from the middle of 

 June to the middle of July. Some about 9 inches in diameter 



In 1896, none seen. 



In 1897, foui' specimens seen on July 27th. 



In 1898, a few damaged specimens seen during July and 

 August. 



Cyanea lamarckii, Peron et Lesueui'. 



In 1895, during the early part of August the harbour was 

 full of large specimens. 



In 1896-97, none were seen. 



In 1898, about a dozen damaged specimens seen on August 

 23rd and 24th. 



Pelagia perla (Slabber). 



Pelayia cyanella, Eorbes, 1847, p. 390, pi. ix. 



In 1895, none seen. 



In 1896, on July 23rd, August 31st, and September 4th, 

 shoals entered the harboui' ; on the latter date very abundant. 



In 1897, shoals arrived in July, August, and November. 



In 1898, none seen. 



Pelagia floats in with the tide, swimming close to the sur- 

 face, as the tide recedes large numbers are usually left stranded 

 on the shore. 



The tunbrella is a little broader than^high, about 2^ to 4 inches 

 in diameter. The buccal arms about 2h to 4^ inches in length. 

 The tentacles are about 4 inches in length when contracted, but 

 are capable of extending to several feet. Colour usually purp- 

 lish, occasionally brownish purple or pale mauve. 



Pilema octopus (Linn.). 



Rhi%ostoma pulmo, Eorbes, 1848. 

 Pilema octopus, Haeckel, 1879, 



In 1895, a specimen was seen by the Misses Delap on Octo- 

 ber 10th. It was swimming fast against the tide. Umbrella 



