460 FISHES OF THE FIRTH OF FORTH 



Division. Page. 



From two to four barbules on the nose Motelki. 354 



51. , 



Nose without barbules 52 



f First dorsal fin with three rays Raniceps. 359 



( First dorsal fin with fifteen rays Lota. 352 



1 Ventrals smaller than the pectorals 54 



( Ventrals larger than the pectorals CaUionymus. 248 



( First dorsal fin with five rays Tracliimts. 172 



54. \ 



[ First dorsal fin with nine rays Merlucius. 350 



(Chin innth a barbule Morrhua. 333 



65 \ 



'\ Chin without a barbule Merlangus. 342 



t Branchial openings on the imder surface 63 



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



i Anal fin wanting; 58 

 Anal fin present 59 



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



' ( Dorsal fins without spines Sqiiat'ma. 421 



(Temporal orifices wanting Lamna. 413 



' t Temporal orifices present 60 



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



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



( Teeth very blunt 3Iustelus. 416 



( Teeth very sharp 62 



c Teeth denticulated on the outer side only Galeus. 414 



■ i Teeth entire, not denticulated Selachus. 4 1 8 



rTaU with fins -??«««• 424 



^^" ( Tail without fins Trygon. 440 



( Teeth present Petromyzon. 442 



^"^ 1 Teeth wanting Ammoccetes. 447 



