364 



E. S. CLARK. 



Several adult S. lascaris have been trawled from time to time, prin- 

 cipally in Whitsand Bay, and I have thought it worth while to give a 

 record of their numerical characters. Nine of these specimens were cut 

 up and the vertebrae counted. In the other eleven individuals the fin 

 formula alone has been recorded. 



NUMERICAL CHARACTERS OF ADULTS. 



3 



4 



5 



6 



7 



8 



9 



10 



11 



12 



13 



14 



15 



16 



17 



18 



19 



20 



80 

 90 

 85 

 87 

 87 

 86 

 81 

 83 

 88 

 80 

 86 

 86 

 91 

 84 

 82 

 85 

 85 

 87 

 91 

 82 



Summary for 20 specimens : — 



D 80-91 A 65-76 



Kyle gives D 79-89 A 61-70 



My post-larvse give the following range 

 D 89-96 A 68-76 



There is thus an extension to Kyle's summary, which works out as 

 follows : — 



D 79-96 



A 61-76 



Vertebra 46-48 



This large amount of variation seems to be a characteristic feature in 

 the genus Solea. 



From previous records of the eggs of this species, and from the occur- 

 rence of the post-larval forms, spawning seems to take place during 

 June, July, and August. Hefiord recorded the capture of one egg in 

 March, the resulting larva of which he described and figured.* Holt| 



* Journ. M.B.A. Vol. IX. 1910. 

 t Sci. Trans. Roy. Soc. Dublin. Vol. IV, S. 2. 1891. 



