xii 

 Order VIII. GANOIDEI. 



Family Salamandro'idce . 



Page 



Genus Lepidosteus '. 52 



Potypterus 53 



Family Sturionida. 



Genus Planirostra 53 



Order IX. HOLOCEPHALI. 



Family Chimaridee. 



Genus ChinuBra 53 



Order X. PLAGIOSTOMI. 



Family SpinatidcB. 



Genus Sjnnax 54 



Family Scyttida. 



Genus Scyttium - 4 



Family Nictitantes. 



Genus Galeus 55 



Family Squalidce. 



Genus Squalus 55 



Chiloscyllium 55 



Zyg*** 55 



Family Raiida;. 



Genus Rhinobatus 5g 



Triffonorhina 55 



Myliobatis . . gg 



Torpedo . -. . -,' . . 



