II. FIXED GILLED CHONDROPTERYGIANS, 241 

 Fam. I. Selachii. 241 



Squalus, 242 



Scyllium, 242 



Squalus, 243 



Carcharias, 243 



Limna, 244 



Galeus, 245 



Musletus, 245 



Selachc, 245 



Ccstracion, 246 



Spinax, 246 



Centrona, 246 



Scymnus, 247 

 Zygo?na, 247 



Squatena, 248 



Pristis, 248 

 Raia, 248 



Raia, 248 



Rhinobatus, 249 



Rhina, 249 



Torpedo, 249 



Raia, 250 



Trygon, 251 



Anacanthus, 252 



Myliobates, 252 



Rhinoptcra, 252 



Cepbaloptera, 253 



Fam. II. Suctorii, 253 



Petromyzon, 254 



Pctromyzon, 254 

 Myxinc, 255 



Heptatremus, 255 



Gastrobranchus, 255 



Ammoccetes, 255 



NOTE. 



Cornish Fishes, 256 



Order I. Apodes, 256 



II. Jugulares, 256 



III. Thoracici, 257 



IV. Abdominales, 257 

 Branchyostegous Fisbes, 258 

 Chondropterygious Fisbes, 258 



