460 FISHES OF THE FIRTH OF FORTH 



Division. Page. 



( From two to four barbules on the nose Motella. 354 



without bai-bules 52 



52. 



First dorsal fin with three rays Baniceps. 359 



First dorsal fin with fifteen rays Lota. 352 



i Ventrals smaller than the pectorals 54 



53. \ 



( Ventrals larger than the pectorals Callionymns. 248 



54. 



First dorsal fin with five rays Trachinus. 1 72 



First dorsal fin with nine rays Merlucius. 350 



f Chin with a barbule Morrhua. 333 



' I Chin without a barbule Merlangus. 342 



j Branchial openings on the under surface 63 



( Branchial openings on the sides of the neck... 57 



j Anal fin wanting 58 



( Anal fin present 59 



j A sharp spine in front of each dorsal fin Spinax. 420 



( Dorsal fins without spines Squatina. 421 



59. 



f Temporal orifices wanting Lamna. 413 



I Tempoi'al orifices present 60 



f First dorsal fin situated behind the ventrals. . . . Scyllium. 407 

 ' L First dorsal fin situated before the ventrals.... 61 



( Teeth very blunt Mustehis. 416 



1 Teeth very sharp 62 



r Teeth denticulated on the outer side only Galeus. 414 



62 ■< 



( Teeth entire, not denticulated Selachus. 418 



r Tail with fins ^awz. 424 



63 " \ Tail without fins Trygon. 440 



( Teeth present Petromyzon. 442 



| Teeth wanting Ammoccetes. 447 



