AND THEIR DISTRIBUTION AT DIFFERENT AGES. 



103 



Hitherto, lemon soles, less than one year old, have not been 

 obtained by me either in shallow or in deep water. Dr. Fulton 

 obtained three specimens 2 inches in length in March and May, in 

 about 20 fathoms. This shows that the growth is not more rapid 

 than that of the flounder, since these specimens were ten to twelve 

 months old. 



Solea vulgaris, the Sole. 



Most of these data were given in my " Treatise on the Common 

 Sole,'^ but I have slightly modified my interpretation of them. The 

 specimens taken in the Sound up to 19" 7 cm. in length I formerly 

 considered to be two years old, but my observations on the flounder 

 in captivity show that some soles probably reach this length at the 

 beginning of their second year. 



Solea lascaris, the French Sole, or Sand Sole. 



This species is not common, and it is therefore difficult to get 

 more than an occasional specimen ; the size of the adult is about 

 the same as that of the common sole, and the above estimated ages 

 are based on comparison with that of my captive flounders. 



