ARRANGEMENT. 459 



'■: 



12. 



46. 



Ventral fins situated before the pectorals 49 



Ventral fins situated behind the pectorals 47 



Page. 



Division. 



( Second dorsal fin adipose, without rays 36 



( Second dorsal fin not adipose, with rays 37 



< Anal fin with fewer rays than the first dorsal. . . . Salmo. 278 



( Anal fin with more rays than the first dorsal.. . . Osmerus. 312 



( Caudal fin forked 38 



I Caudal fin not forked 45 



i Dorsal fins wide apart 39 



( Dorsal fins approximate 41 



I Second dorsal fin without finlets 40 



39. 1 



( Second dorsal fin with five finlets Scomber. 210 



, First dorsal fin with eight rays A therina. 230 



40. 



First dorsal fin with four rays Mugil. 225 



( Second dorsal fin with eight finlets Thynnus. 213 



I Second dorsal fin without finlets 42 



Tongue smooth, without teeth 43 



Tongue rough, with teeth Labrax. 1 70 



( Three detached rays at base of each pectoral. Trigla. 174 



• I No detached rays at the base of the pectorals. 44 



( Anal fin with twenty-seven rays Caran.r. 217 



( Anal fin with ten rays Perca. 168 



i Ventral fins united together Gobius. 240 



45. ; 



( Ventral fins separate 46 



( Vomer without teeth 48 



( Vomer with teeth in front Cottus. 183 



4«. 



( Body with large scales, snout without spines... Scicena. 200 



( Body with osseous plates, snout with spines... Aspidophorus. 188 



( A large opening behind each pectoral fin Lophius. 253 



( No opening behind the pectorals 50 



(Chin with a barbule 51 



50. \ 



I Chin without a barbule 53 



