THE FLAT-FISH FAMILY 



263 



net worked at the surface, in July. These specimens range in 

 length from 3-42 mm. to 16-25 mm. (a little more than ^^ 

 to T Vb- inch). 



The smallest of these larvae (Fig. 122) is still equal-sided : the 



FIG. 122. Larva of Turbot,'a little more than inch long, from a preserved specimen ; 



after Holt. 



head is relatively large, the tail fin is forming, but the marginal 

 fins are very narrow and without fin-rays. The jaws are fully 

 formed, and the mouth is very wide : the hinder end of the body 

 narrows rapidly. All the stages possess an air-bladder. At 5-42 



FIG. 123. Larva of Turbot, a little more than i inch long, with spines on the heap, 

 from a preserved specimen ; after Holt. 



mm. (a little more than I- inch), the development is much more ad- 

 vanced (Fig. 123). The body has increased greatly in breadth, the 

 tail-fin and marginal fins are well developed and provided with 

 complete-bony fin-rays. The eyes however are still nearly opposite 

 to one another, the right being only a little higher than the left. 



