316 



LIFE BY THE SEASHORE. 



(2) Fins all with soft rays. 

 A. Head symmetrical. 



(a) One 'to three 

 dorsal fins, ven- 

 tral fins beneath 

 throat, body 

 elongated . 



(b) Single dorsal 

 occupying most 

 of back,ventrals 

 rudimentary or 

 absent, single 

 anal 



Three dorsal- 

 fins, two anal s, 

 ventrals with 

 six rays 



No ventral fins," 

 lower jaw 

 long, anus far 

 back 



B. Head unsymmetrical. 



Barbule rudimentary, 

 lower jaw longer 

 than upper, teeth 



. uniform G. virens. 



-Pectoral fin long and 



pointed A. tobi- 



anus. 

 Pectoral fin short and 



rounded A. lanceo- 



latus. 



Teeth lanceolate and 

 compressed, lateral 

 line nearly straight, 

 scales present P. 

 platessa. 



Teeth conical, lateral 

 line curved, plates 

 at base of fin -rays, 



' no scales P. flcsus. 



NOTE ON DISTRIBUTION. 



The fishes and sea-squirts described in this chapter are for the most 

 part those which are widely distributed round British coasts, though 

 in regard to fishes especially other species will be found to be common 

 in pools on the Western coast. The curious lump-sucker is commoner 

 on Scotch than on English coasts. 



