22 



TRANSACTIONS LIVERPOOL BIOLOGICAL SOCIETY, 



was thoroughly skimmed by the Assistant Curator on 

 forty-five of the fifty-eiglit days over which the season 

 lasted. The largest number of eggs obtained on one day 



over 



total 



total 



The 



was 356,000 on April 15th, but collections of 

 oOO.OOO were made on three previous days. The 

 number for the season was 7,402,000. and the 

 number of fry set free in the sea was 4,929,600. 

 majority of the young fish were liberated by Professor 

 Herdman from his yacht ' Euna,' at a distance of about 

 five miles from land. 



" Figures 4 to 9 show a series of stages in the develop- 

 ment of the young plaice from tlie newly liatched 

 larva (4) through the post-larval metamorphosis (5 to 8) 

 to the }Oung flat-fish (9). They are from photographs 

 taken at Port Erin l)y ])r. Francis Ward. 



" The numbers of plaice eggs collected and of larvae 

 set free during the past season were as follows: — 



Larv;e set free. 



90,300 .. 



166,400 .. 



47,200 .. 



85,000 .. 



135..500 .. 



91,300 .. 



135,.500 .. 



101,000 .. 



161,700 .. 



164,000 .. 



79,700 .. 



1.39,700 .. 



117,000 .. 



168,000 .. 



139,700 .. 



162,700 .. 



140,700 .. 



147.000 .. 



90,000 .. 



156,400 .. 



137,200 .. 



241.300 .. 



April 



Date. 

 March 21 

 21 

 21 

 21 

 30 

 30 

 30 

 30 

 4 

 4 

 7 

 7 

 11 

 11 

 12 

 12 

 13 

 13 

 15 

 15 

 17 

 18 



