SYNGXATHID.E. PETROMYZONTID^. 375 



67. Hippocampus ramulosus, Leach. Branched Sea-horse. 

 Hob. Coast of France. 



Family PETROMYZONTID^E. 



Genus PETROMYZON. 



68. Petromyzon fluviatilis, Linn. River Lamprey. 

 Hob. British rivers. 



