SEA-FISHERIES LABORATORY. 423 



spring months, appear in the area off the south-west of 

 the Isle of Man from the middle of February to the 

 beginning of June. They occurred in Port Erin Bay 

 on February 22nd, 1907. None were met with again until 

 they appeared in the open sea plankton on March 29th. 

 The eggs were generally distributed in the Bay and 

 open sea throughout April up to the end of the month. 

 Eggs of the dab were observed for the first time in 1908 

 in the plankton collected on March 11th. They occurred 

 in most of the collections taken in April and May, and 

 were present up to as late as June 6th. The eggs made 

 their appearance in the plankton of 1909 on March 12th. 

 They were fairly uniformly distributed in the Bay and 

 iu the open sea from that date onwards until May 17th. 

 Very few records of dab eggs were obtained from the 

 plankton collected in 1910. They did not occur before 

 May 2nd, and none were seen after the 9th of that month. 

 1911 presented us with the earliest record of the 

 appearance of the dab egg in the plankton of the area 

 collected during the six years' investigations. The first 

 eggs of the fish were found' in a Bay collection on 

 February 17th. None were observed again until 

 March 4th. After that date dab eggs continued to be 

 represented up to the end of April. The eggs occurred 

 in the plankton collected during 1912 for a period of six 

 weeks. They were noted for the first time on March 4th, 

 and were generally distributed in the Bay and open sea 

 from that date onwards to the middle of April. 



Solea lutea, Bisso. — Solenette. 



Small pelagic eggs, measuring 076 to 0"8 mm. in 

 diameter with many oil globules, which were 

 identified as those of the solenette, were occasionally 

 observed in the spring and early summer plankton of 



