IL. FIXED GILLED CHONDROPTERYGIANS, 241 



Fam. I. Selachii. 241 



Squalus, 242 



Scyllium, 242 



Squalus. 243 



Carcharias, 243 



Limna, 244 



Galeus, 245 



Musletus, 245 



Selache, 245 



Cestracion, 246 



Spinax, 246 



Centrona, 246 



Scymniis, 247 

 Zygoena, 247 



Squatena, 248 



Pristis, 248 

 Raia, 248 



Raia, 248 



Rhinobatus, 249 



Rhina, 249 



Torpedo, 249 



Raia, 250 



Trygon, 251 



Anacanthus, 252 



Myliobates, 252 



Rhinoptera, 252 



CVphaloptera, 253 



Fam. II. SucTORii, 253 



Petroniyzon, 254 



Petromyzon. 254 

 Myxine, 255 



Heptatremus, 255 



Gastrobranchus, 255 



Ammoccetes, 255 



NOTE. 



Cornish Fishes, 256 



Order I. Apodes, 256 



II. Jugulares, 256 



III. Thoracic], 257 



IV. Abdominales, 257 

 Branchyostegous Fishes, 258 

 Chondropterygious Fislies, 258 



