352 



MARKETABLE BRITISH MARINE FISHES 



thinner. With the aid of the microscope there is no difficulty 

 in distinguishing the spawn of the suckers, for in these eggs the 

 yolk is transparent, and contains a number of oil globules. 



Fig. 156. — Newly hatched larva of the Diminutive .Sucker or Sea-.snail. 



The hatched larva of the sucker (Fig. 156) is as different as 

 possible from that of the herring, the head and body being 

 plumper, and the vent placed near the head, instead of near 

 the end of the tail as in the herring. 



